Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 40
Filtrar
Mais filtros

Base de dados
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
J Pediatr Psychol ; 49(1): 45-55, 2024 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-37840456

RESUMO

OBJECTIVE: To assess parent psychological distress in families of children with common chronic health conditions (CHC) and to explore relationships between parent psychological distress, unmet supportive care needs and children's quality of life (QoL). METHOD: Cross-sectional study involving parents of children diagnosed with a common CHC between 0 and 12 years of age and who had received treatment within the last 5 years. Eligible parents completed an online survey, that included the Depression Anxiety Stress Scale (DASS-21) assessing distress in parents and a 34-item assessment of unmet supportive care needs across 6 domains. Parents completed ratings of their child's current functioning (QoL) using the 23-item PedsQL. Multivariable regression models examined the relative association between unmet needs, children's QoL and parents' depression, anxiety, and stress. RESULTS: The sample consisted of 194 parents of children with congenital heart disease (n=97; 50%), diabetes (n=50; 26%), cancer (n=39; 20%), and asthma (n=8; 4%). A significant proportion of parents had moderate-severe symptoms of depression (26%), anxiety (38%), and stress (40%). Of the PedsQL scales, the poorest outcomes were found for emotional and school functioning. Multivariable analyses showed that both higher unmet needs and poorer child emotional functioning were associated with parent depression, anxiety, and stress symptoms. CONCLUSION: Evidence linking parent distress symptoms to higher unmet needs and poorer child emotional functioning suggests these factors may be targets for interventions to alleviate parent distress. Longitudinal research using larger samples is required to replicate findings, and clarify the magnitude and direction of associations.


Assuntos
Angústia Psicológica , Qualidade de Vida , Criança , Humanos , Estudos Transversais , Pais/psicologia , Ansiedade/psicologia , Estresse Psicológico
2.
Br J Clin Psychol ; 63(4): 603-626, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38956764

RESUMO

OBJECTIVES: This study examined the factorial invariance of the factor structure of the Wechsler Intelligence Scale for Children, Fifth Edition (WISC-V) across the UK, US and Australia & New Zealand (A&NZ). The factorial equivalence of cognitive assessments should be demonstrated before assuming cross-culture generalizability and interpretations of score comparisons. METHODS: Data were obtained from the UK, US and A&NZ normative standardizations of the WISC-V. The samples consisted of 415 UK, 2200 US and 528 A&NZ children, aged 6-16. Confirmatory factor analysis was applied separately in each sample to establish the baseline model. Next, tests of factorial invariance were undertaken using the recommended hierarchical approach, firstly across the UK and A&NZ samples and then across the UK and US samples. RESULTS: The five-factor first-order scoring model was found to be excellent fit across all three samples independently. Strict factorial invariance of the WISC-V was demonstrated firstly across the UK and A&NZ and secondly the UK and US nationally representative standardization samples. Comparison of latent means found small but significant differences in female children across the UK and A&NZ samples. CONCLUSIONS: Consistent with previous research, these results demonstrate the generality of the WISC-V factor structure across the UK, US and A&NZ. Furthermore, as the WISC-V factor structure aligns with the Cattell-Horn-Carroll (CHC) model of cognitive abilities, the results add further support to the cross-cultural generalizability of the CHC model. Small but significant differences in latent factor scores found across samples support the development and use of local normative data.


Assuntos
Comparação Transcultural , Psicometria , Escalas de Wechsler , Humanos , Criança , Feminino , Masculino , Escalas de Wechsler/estatística & dados numéricos , Nova Zelândia , Austrália , Reino Unido , Estados Unidos , Adolescente , Análise Fatorial , Psicometria/instrumentação , Psicometria/normas
3.
Child Care Health Dev ; 50(6): e13336, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-39384552

RESUMO

BACKGROUND: While theoretical models have established the bidirectional relationship between health and wellbeing of parents and children with chronic health conditions (CHCs), previous work has predominantly emphasised the impact of parent functioning on child outcomes. This study examines how quality of life (QoL) domains in children with CHCs are associated with unmet supportive care needs (SCN) of their parents and explores whether these associations vary by health condition. METHOD: Parents of children with congenital heart disease (CHD), type 1 diabetes (T1D) and cancer diagnosed before the age of 12 years and receiving treatment within the last 5 years were eligible. Parents recruited through charity organisations and social media platforms completed a secure, online survey via Qualtrics. The PedsQL examined child QoL across four dimensions: physical, emotional, social and school functioning. A 34-item survey assessed parents' unmet SCN in the previous month across six need domains (e.g., care and informational). Linear regressions examined associations between child QoL and unmet SCN domains and moderation analyses determined whether associations varied as a function of CHC. RESULTS: The study included 186 parents (age range 25-56 years) of children diagnosed with various CHCs (52% CHD; 27% T1D, 21% cancer). The child's emotional functioning was inversely related to all unmet SCN domains, social functioning was inversely related to three domains (physical and social; support; financial), school functioning was inversely related to two domains (physical and social; care), and child's physical functioning was not associated with any SCN domains. Only the association between child school functioning and unmet care needs was significantly moderated by CHC type (p < 0.05). CONCLUSION: Poorer emotional functioning in children with a CHC is a key factor in determining parents unmet SCN. Larger studies are required to replicate these findings and inform design of interventions addressing QoL and unmet SCN in families of children with common CHCs.


Assuntos
Pais , Qualidade de Vida , Apoio Social , Humanos , Masculino , Feminino , Doença Crônica/psicologia , Criança , Adulto , Pais/psicologia , Pessoa de Meia-Idade , Pré-Escolar , Diabetes Mellitus Tipo 1/psicologia , Diabetes Mellitus Tipo 1/terapia , Necessidades e Demandas de Serviços de Saúde , Neoplasias/psicologia , Neoplasias/terapia , Cardiopatias Congênitas/psicologia , Cardiopatias Congênitas/terapia , Avaliação das Necessidades , Inquéritos e Questionários
4.
Clin Psychol Psychother ; 31(3): e3000, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38890794

RESUMO

OBJECTIVES: Early maladaptive schemas represent unhelpful frameworks of cognitions, emotions and subsequent behavioural responses and can be associated with depressive symptoms. Caregivers of individuals with serious mental illness (SMI) frequently report experiencing depressive symptoms. It is unclear whether depressive symptoms in caregivers are influenced by schemas. We aimed to compare activated schemas in caregivers of people with schizophrenia spectrum (SSD) and bipolar disorder (BD) diagnoses and to determine whether they were differentially related to depressive symptoms. DESIGN AND METHODS: Caregivers completed validated measures of depression and schemas. Independent samples t-tests and multivariate generalised linear models were used to assess differences in schemas and depressive symptoms between caregiver groups. Interrelationships between schema domains and caregiver depressive symptoms were delineated using correlational analyses and forward stepwise regressions. RESULTS: One hundred eight caregivers participated in the study (SSD n = 68, BD n = 40). No differences in depressive symptom severity or activated schemas were observed between caregiver groups. All schemas were significantly associated with depressive symptoms, and the Disconnection-Rejection schema domain explained the most variance in depressive symptoms in both caregiver groups. CONCLUSIONS: Schemas contribute to the severity of caregiver depression regardless of whether the person receiving care is diagnosed with SSD or BD. Schema therapeutic frameworks may be beneficial for use with caregivers to address schemas within the Disconnection-Rejection domain and alleviate depressive symptoms by reducing experiences of social isolation and alienation.


Assuntos
Adaptação Psicológica , Transtorno Bipolar , Cuidadores , Esquizofrenia , Humanos , Cuidadores/psicologia , Feminino , Masculino , Transtorno Bipolar/psicologia , Pessoa de Meia-Idade , Adulto , Depressão/psicologia , Psicologia do Esquizofrênico
5.
Eur J Neurosci ; 58(3): 2838-2852, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37317510

RESUMO

Neuroimaging resting state paradigms have revealed synchronised oscillatory activity is present even in the absence of completing a task or mental operation. One function of this neural activity is likely to optimise the brain's sensitivity to forthcoming information that, in turn, likely promotes subsequent learning and memory outcomes. The current study investigated whether this extends to implicit forms of learning. A total of 85 healthy adults participated in the study. Resting state electroencephalography was first acquired from participants before they completed a serial reaction time task. On this task, participants implicitly learnt a visuospatial-motor sequence. Permutation testing revealed a negative correlation between implicit sequence learning and resting state power in the upper theta band (6-7 Hz). That is, lower levels of resting state power in this frequency range were associated with superior levels of implicit sequence learning. This association was observed at midline-frontal, right-frontal and left-posterior electrodes. Oscillatory activity in the upper theta band supports a range of top-down processes including attention, inhibitory control and working memory, perhaps just for visuospatial information. Our results may be indicating that disengaging theta-supported top-down attentional processes improves implicit learning of visuospatial-motor information that is embedded in sensory input. This may occur because the brain's sensitivity to this type of information is optimally achieved when learning is driven by bottom-up processes. Moreover, the results of this study further demonstrate that resting state synchronised brain activity influences subsequent learning and memory.


Assuntos
Eletroencefalografia , Individualidade , Adulto , Humanos , Aprendizagem , Memória de Curto Prazo , Tempo de Reação , Ritmo Teta
6.
Psychol Med ; 53(15): 6945-6964, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37489510

RESUMO

BACKGROUND: Family members of people with mental illness (MI) may experience a host of psychological adversities such as increased stress, burden, and reduced wellbeing. However, relatively little is known about siblings. This study aimed to characterise the experience of distress (viz. depressive and anxiety symptoms), burden, and wellbeing in siblings of people with MI. METHODS: Studies reporting on quantitative measures of depression, anxiety, burden, or wellbeing in siblings; and/or qualitative findings on siblings' experience were eligible. The literature search was conducted up until 20th October 2022. RESULTS: Sixty-two studies comprising data from 3744 siblings were included. The pooled mean percentage of depressive symptoms fell in the mild range at 15.71 (k = 28, N = 2187, 95% CI 12.99-18.43) and anxiety symptoms fell in the minimal range at 22.45 (k = 16, N = 1122, 95% CI 17.09-27.80). Moderator analyses indicate that siblings of people with a schizophrenia spectrum disorder experience greater depressive symptoms than siblings of people with other types of MI (ß = -16.38, p < 0.001). Qualitative findings suggest that individuals may be particularly vulnerable during their siblings' illness onset and times of relapse. Limited communication, confusion about MI, and the need to compensate may contribute to siblings' distress and/or burden. Siblings' experience of wellbeing and caregiving were closely related. CONCLUSION: This review highlights the complex psychological experience of siblings and the need for greater research and clinical support for this important yet often overlooked cohort.


Assuntos
Transtornos Mentais , Esquizofrenia , Humanos , Irmãos/psicologia , Ansiedade , Confusão
7.
Aust N Z J Psychiatry ; 57(5): 642-660, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36113083

RESUMO

OBJECTIVE: The objective of this study was to characterise the prevalence and/or severity of psychological distress (namely, depression and anxiety symptoms) in siblings of people with mental illness (MI) and to examine correlates of distress in siblings of people with MI. METHOD: Studies comparing distress in individuals with and without a sibling with MI were eligible. Studies reporting on correlates of distress in siblings were also eligible. A search of MEDLINE Complete, PsycINFO and Embase was conducted up until 17 March 2022. RESULTS: Fifteen studies comprising 2304 siblings and 2263 comparison individuals were included. Meta-analyses indicated individuals with a sibling with MI experience significantly greater depressive symptoms (Hedges's g = 0.53, 95% CI = [0.32, 0.73], siblings n = 1962, comparison individuals n = 2248) and anxiety symptoms (Hedges's g = 0.40, 95% CI = [0.19, 0.61], siblings n = 653, comparison individuals n = 533) than those without. The sibling relationship, siblings' locus of control, interpersonal functioning and their appraisal of the impacts of MI were identified as important and potentially modifiable correlates. CONCLUSION: Individuals with a sibling with MI experience greater depressive and anxiety symptoms than those without and would likely benefit from support. Future studies are required to elucidate the mechanisms underlying distress in siblings.


Assuntos
Transtornos Mentais , Angústia Psicológica , Humanos , Irmãos/psicologia , Transtornos Mentais/epidemiologia , Transtornos Mentais/psicologia , Relações entre Irmãos , Ansiedade/epidemiologia
8.
J Clin Nurs ; 32(19-20): 7101-7124, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37353963

RESUMO

BACKGROUND AND AIMS: Unmet supportive care needs (SCN) refer to perceived gaps in the support parents want to manage caregiving activities for children with chronic health conditions (CHC) and the support received. This review aims to systematically identify the unmet SCN of families with children living with five common paediatric CHC and characterise the assessment tools used to measure SCN. DESIGN: Systematic review methodology with narrative synthesis of data. Reporting followed the PRISMA statement guidelines. METHOD: Literature searches were conducted in electronic databases Medline complete, PsycINFO, CINHAL and EMBASE to retrieve relevant articles published between 1990 and July 2022. Eligible studies involved (i) children aged 0-18 years diagnosed with either of cancer, congenital heart disease (CHD), diabetes, asthma, renal disease and (ii) assessment of unmet SCN. Studies involving children with genetic or developmental conditions were excluded. The methodological quality of studies was assessed using JBI assessment tool. RESULTS: Of 6223 articles screened, 34 papers were included (25 quantitative, 5 qualitative and 4 mixed design). Most papers explored unmet needs of families with cancer (n = 26). The remaining articles concerned CHD (n = 5), asthma (n = 2) and mixed CHC (n = 1, renal failure, and diabetes). Information (e.g. treatment, lifestyle, etc.) and health care (e.g. emotional support, practical services, etc.) were the most common unmet need domains across health conditions. A variety of methods and need assessments hampered comparisons between studies both across and within CHC. CONCLUSION: Irrespective of illness, addressing unmet informational or health care needs may help to optimise outcomes and care for children and families living with common CHC. There was considerable variation in reporting styles, study design and need assessments both within and across conditions. RELEVANCE TO CLINICAL PRACTICE: Health care professionals must routinely evaluate the type, quality and quantity of psychoeducation and support that families of children with CHC want and receive. Providing nurses with more effective strategies to assess child and family needs across a broad range of domains may help to increase understanding of where further support for families is required. PATIENT OR PUBLIC CONTRIBUTION: There was no patient or public contribution to this study as it involved a systematic review of existing literature.


Assuntos
Diabetes Mellitus , Neoplasias , Humanos , Criança , Cuidados Paliativos/psicologia , Atenção à Saúde , Neoplasias/psicologia , Doença Crônica , Necessidades e Demandas de Serviços de Saúde
9.
BMC Psychiatry ; 22(1): 422, 2022 06 23.
Artigo em Inglês | MEDLINE | ID: mdl-35733174

RESUMO

BACKGROUND: Informal primary caregivers provide crucial supports to loved ones experiencing serious mental illnesses with profound outcomes for the caregivers themselves. A comprehensive understanding of how different serious mental illnesses change the caregiving experience may provide important insight into the ways in which caregivers can be better supported in their role. The aim of this review was to synthesize the comparative literature examining caregiver burden and psychological functioning (anxiety, depression, distress, and psychological wellbeing) between caregivers of people with schizophrenia spectrum disorders and bipolar disorder. METHODS: Studies were included if they compared caregivers across both diagnostic groups and used measures assessing either caregiver burden or psychological functioning of caregivers. Databases searched up until 11th of January 2022 included: Medline COMPLETE, Embase, PsycINFO and CINAHL. Reference list scans and grey literature searches across government, organisational and dissertation databases were also conducted. RESULTS: Twenty-eight studies comprising 6166 caregivers were included. Fourteen studies suggested that caregiving burden was comparable across both groups. The effects of caring on caregiver mental health and stress were comparable across both groups. However, methodological limitations were noted, including a reliance on cross-sectional studies, multiple and sometimes competing definitions of caregiving burden, variable sample sizes, and variation in measures used. CONCLUSION AND IMPLICATIONS: The experience of providing care is multidimensional and complex. Symptoms and functional difficulties experienced by people being cared for may affect caregivers more so than diagnosis. Caregivers play a vital role in helping people with serious mental illness. Supporting caregivers by reducing their burden and improving their psychological functioning may help them to continue to provide support, and cope with, the challenges of providing care.


Assuntos
Transtorno Bipolar , Esquizofrenia , Adaptação Psicológica , Sobrecarga do Cuidador , Cuidadores/psicologia , Efeitos Psicossociais da Doença , Estudos Transversais , Humanos , Esquizofrenia/terapia , Estresse Psicológico/psicologia
10.
J Neurophysiol ; 125(5): 1768-1787, 2021 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-33788622

RESUMO

Combined single-pulse transcranial magnetic stimulation (TMS) and electroencephalography (EEG) has been used to probe the features of local networks in the cerebral cortex. Here, we investigated whether we can use this approach to explore long-range connections between the cerebellum and cerebral cortex. Ten healthy adults received single-pulse suprathreshold TMS to the cerebellum and an occipital/parietal control site with double-cone and figure-of-eight coils while cerebral activity was recorded. A multisensory electrical control condition was used to simulate the sensation of the double-cone coil at the cerebellar site. Two cleaning pipelines were compared, and the spatiotemporal relationships of the EEG output between conditions were examined at sensor and source levels. Cerebellar stimulation with the double-cone coil resulted in large artifact in the EEG trace. The addition of SOUND filtering to the cleaning pipeline improved the signal such that further analyses could be undertaken. The cortical potentials evoked by the active TMS conditions showed strong relationships with the responses to the multisensory control condition after ∼50 ms. A distinct parietal component at ∼42 ms was found following cerebellar double-cone stimulation. Although evoked potentials differed across all conditions at early latencies, it is unclear as to whether these represented TMS-related network activation of the cerebellarthalamocortical tract, or whether components were dominated by sensory contamination and/or coil-driven artifact. This study highlights the need for caution when interpreting outcomes from cerebellar TMS-EEG studies.NEW & NOTEWORTHY This is the first study to systematically assess the feasibility of obtaining TMS-evoked potentials from cerebellar stimulation with concurrent EEG. An innovative control condition using electrical stimulation was modified to mimic the sensory aspects of cerebellar stimulation with a double-cone coil, and a state-of-the art cleaning pipeline was trialled. The extent of artifact contamination in signals from stimulation of a cerebellar and an occipital/parietal control site using two TMS coil types was highlighted.


Assuntos
Cerebelo/fisiologia , Córtex Cerebral/fisiologia , Eletroencefalografia , Potenciais Evocados/fisiologia , Estimulação Magnética Transcraniana , Adulto , Estimulação Elétrica , Eletromiografia , Estudos de Viabilidade , Feminino , Humanos , Masculino , Lobo Occipital/fisiologia , Lobo Parietal/fisiologia , Adulto Jovem
11.
Neuropsychol Rev ; 31(3): 385-401, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-33606174

RESUMO

This meta-analysis examines mood changes after bilateral subthalamic deep brain stimulation (STN-DBS) in patients with Parkinson's disease (PD). Deep brain stimulation improves motor outcomes in Parkinson's disease but there appears to be conflicting reports as to subsequent mood outcomes. Pubmed, PsychINFO and SCOPUS were searched for studies assessing mood outcomes in PD patients who had undergone STN-DBS published between January 2003 and the end of January 2019. Random effects meta-analyses were conducted for all outcome groups with at least two studies homogenous in design and measure. Forty-eight studies, providing data on negative moods (such as depression, anxiety, apathy, and anger) and positive moods (pleasure and euphoria) were assessed. Results of the meta-analysis suggest that post-DBS, depression and anxiety symptoms improve and there is a reduction in negative affect, an increase in apathy, and in energy level. Although there have been reported cases of mania post-DBS surgery, the meta-analysis suggested no significant changes in symptoms of mania in the broader DBS population. Considerable heterogeneity was found and partially addressed through meta-regression and qualitative assessment of the included STN-DBS controlled studies. The major strengths of this meta-analysis, include attention to outcome validity, heterogeneity, independence of samples, and clinical utility, with the potential to improve post-operative safety through comprehensive consideration of mood and psychological adjustment. It appears that STN-DBS is a relatively safe and, in the case of mood symptomatology, an advantageous treatment of Parkinson's disease.


Assuntos
Apatia , Estimulação Encefálica Profunda , Doença de Parkinson , Núcleo Subtalâmico , Humanos , Transtornos do Humor/etiologia , Transtornos do Humor/terapia , Doença de Parkinson/terapia
12.
Neuropsychol Rev ; 31(1): 115-138, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-32918254

RESUMO

Poor working memory functioning is commonly found in schizophrenia. A number of studies have now tested whether non-invasive brain stimulation can improve this aspect of cognitive functioning. This report used meta-analysis to synthesise the results of these studies to examine whether transcranial electrical stimulation (tES) or repetitive transcranial magnetic stimulation (rTMS) can improve working memory in schizophrenia. The studies included in this meta-analysis were sham-controlled, randomised controlled trials that utilised either tES or rTMS to treat working memory problems in schizophrenia. A total of 22 studies were included in the review. Nine studies administered rTMS and 13 administered tES. Meta-analysis revealed that compared to sham/placebo stimulation, neither TMS nor tES significantly improved working memory. This was found when working memory was measured with respect to the accuracy on working memory tasks (TMS studies: Hedges' g = 0.112, CI95: -0.082, 0.305, p = .257; tES studies Hedges' g = 0.080, CI95: -0.117, 0.277, p = .427) or the speed working memory tasks were completed (rTMS studies: Hedges' g = 0.233, CI95: -0.212, 0.678, p = .305; tES studies Hedges' g = -0.016, CI95: -0.204, 0.173, p = .871). For tES studies, meta-regression analysis found that studies with a larger number of stimulation sessions were associated with larger treatment effects. This association was not found for TMS studies. At present, rTMS and tES is not associated with a reliable improvement in working memory for individuals with schizophrenia.


Assuntos
Esquizofrenia , Estimulação Transcraniana por Corrente Contínua , Encéfalo , Humanos , Memória de Curto Prazo , Ensaios Clínicos Controlados Aleatórios como Assunto , Esquizofrenia/terapia , Estimulação Magnética Transcraniana
13.
Cerebellum ; 19(2): 309-335, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31907864

RESUMO

The cerebellum sends dense projections to both motor and non-motor regions of the cerebral cortex via the cerebellarthalamocortical tract. The integrity of this tract is crucial for healthy motor and cognitive function. This systematic review examines research using transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) to the cerebellum with combined cortical electroencephalography (EEG) to explore the temporal features of cerebellar-cortical connectivity. A detailed discussion of the outcomes and limitations of the studies meeting review criteria is presented. Databases were searched between 1 December 2017 and 6 December 2017, with Scopus alerts current as of 23 July 2019. Of the 407 studies initially identified, 10 met review criteria. Findings suggested that cerebellar-cortical assessment is suited to combined TMS and EEG, although work is required to ensure experimental procedures are optimal for eliciting a reliable cerebellar response from stimulation. A distinct variation in methodologies and outcome measures employed across studies, and small sample sizes limited the conclusions that could be drawn regarding the electrophysiological signatures of cerebellar-cortical communication. This review highlights the need for stringent protocols and methodologies for cerebellar-cortical assessments via combined TMS and EEG. With these in place, combined TMS and EEG will provide a valuable means for exploring cerebellar connectivity with a wide range of cortical sites. Assessments have the potential to aid in the understanding of motor and cognitive function in both healthy and clinical groups, and provide insights into long-range neural communication generally.


Assuntos
Cerebelo/fisiologia , Córtex Cerebral/fisiologia , Eletroencefalografia , Estimulação Magnética Transcraniana , Humanos
14.
Cerebellum ; 17(5): 540-549, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29730789

RESUMO

Cerebellar brain inhibition (CBI) describes the inhibitory tone the cerebellum exerts on the primary motor cortex (M1). CBI can be indexed via a dual-coil transcranial magnetic stimulation protocol, whereby a conditioning stimulus (CS) is delivered to the cerebellum in advance of a test stimulus (TS) to M1. The CS is typically delivered at intensities over 60% maximum stimulus output (MSO) via a double-cone coil. This is reportedly uncomfortable for participants, reducing the reliability and validity of outcomes. This feasibility study investigates the reliability and tolerability of eliciting CBI across a range of CS intensities using both a double-cone and high-powered figure-of-8 coil, the D702. It was expected that the double-cone coil would elicit CBI at intensities upwards of 60%MSO. The range for the D702 coil was exploratory. The double-cone coil was expected to be less tolerable than the D702 coil. CBI was assessed in 13 participants (25.92 ± 5.42 years, six female) using each coil (randomized) over intensities 40, 50, 60, 70, 80%MSO. Tolerability was assessed via visual analog scales. Comparisons across intensities and tolerability were assessed non-parametrically and via a linear model. The double-cone coil elicited CBI at intensities 60, 70, and 80%MSO (p < .05), with suppression elicited at 60%MSO not significantly different to that at higher intensities. CBI was not reliably elicited by the D702 coil at any intensity. The double-cone coil was significantly less tolerable than the D702. A CS of 60%MSO with a double-cone coil provides a balance between the reliability and tolerability of CBI.


Assuntos
Cerebelo/fisiologia , Inibição Neural , Estimulação Magnética Transcraniana/instrumentação , Estimulação Magnética Transcraniana/métodos , Adulto , Eletromiografia , Potencial Evocado Motor/fisiologia , Feminino , Humanos , Masculino , Córtex Motor/fisiologia , Músculo Esquelético/fisiologia , Inibição Neural/fisiologia , Vias Neurais/fisiologia , Dor/etiologia , Reprodutibilidade dos Testes , Estimulação Magnética Transcraniana/efeitos adversos
15.
Med J Aust ; 208(1): 35-40, 2018 01 15.
Artigo em Inglês | MEDLINE | ID: mdl-29320671

RESUMO

OBJECTIVES: Many women report declines in cognitive function during pregnancy, but attempts to empirically evaluate such changes have yielded inconsistent results. We aimed to determine whether pregnancy is associated with objective declines in cognitive functioning, and to assess the progression of any declines during pregnancy. STUDY DESIGN: We undertook a meta-analysis, applying a random effects model, of 20 studies that have reported quantitative relationships between pregnancy and changes in cognition. DATA SOURCES: Full text articles indexed by Cumulative Index to Nursing and Allied Health Literature (CINAHL) Complete, MEDLINE Complete, and PsychINFO. DATA SYNTHESIS: The 20 studies assessed included 709 pregnant women and 521 non-pregnant women. Overall cognitive functioning was poorer in pregnant women than in non-pregnant women (standardised mean difference [SMD], 0.52 [95% CI, 0.07-0.97]; P = 0.025). Analysis of cross-sectional studies found that general cognitive functioning (SMD, 1.28 [95% CI 0.26-2.30]; P = 0.014), memory (SMD, 1.47 [95% CI, 0.27-2.68]; P = 0.017), and executive functioning (SMD, 0.46 [95% CI, 0.03-0.89]; P = 0.036) were significantly reduced during the third trimester of pregnancy (compared with control women), but not during the first two trimesters. Longitudinal studies found declines between the first and second trimesters in general cognitive functioning (SMD, 0.29 [95% CI, 0.08-0.50]; P = 0.006) and memory (SMD, 0.33 [95% CI, 0.12-0.54]; P = 0.002), but not between the second and third trimesters. CONCLUSIONS: General cognitive functioning, memory, and executive functioning were significantly poorer in pregnant than in control women, particularly during the third trimester. The differences primarily develop during the first trimester, and are consistent with recent findings of long term reductions in brain grey matter volume during pregnancy. The impact of these effects on the quality of life and everyday functioning of pregnant women requires further investigation.


Assuntos
Disfunção Cognitiva/epidemiologia , Complicações na Gravidez/epidemiologia , Estudos Transversais , Função Executiva , Feminino , Humanos , Memória , Gravidez , Terceiro Trimestre da Gravidez , Qualidade de Vida
16.
Neurochem Res ; 39(12): 2288-300, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25266552

RESUMO

Oral contraceptives (OCs), often referred to as "the pill", are the most commonly employed form of reversible contraception. OCs are comprised of combined synthetic estrogen and progestin, which work to suppress ovulation and subsequently protect against pregnancy. To date, almost 200 million women have taken various formulations of OC, making it one of the most widely consumed classes of medication in the world. While a substantial body of literature has been dedicated to understanding the physical effects of OCs, much less is known about the long term consequences of OC use on brain anatomy and the associated cognitive effects. Accumulating evidence suggests that sex hormones may significantly affect human cognition. This phenomenon has been commonly studied in older populations, such as in post-menopausal women, while research in healthy, pre-menopausal women remains limited. The current review focused on the effects of OCs on human cognition, with the majority of studies comparing pre-menopausal OC users to naturally cycling women. Human neuroimaging data and animal studies are also described herein. Taken together, the published findings on OC use and human cognition are varied. Of those that do report positive results, OC users appear to have improved verbal memory, associative learning and spatial attention. We recommend future research to employ blinding procedures and randomised designs. Further, more detailed information pertaining to the specific generation and phasic type of OCs, as well as menstrual cycle phase of the OC non-users should be considered to help unmask the potential impact of OC use on human cognition.


Assuntos
Cognição/efeitos dos fármacos , Etinilestradiol/farmacologia , Pré-Menopausa , Progestinas/farmacologia , Animais , Feminino , Humanos
17.
Schizophr Bull ; 50(4): 757-770, 2024 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-38412435

RESUMO

BACKGROUND: Most people with psychotic disorders will never commit an act of violence. However, the risk of violence committed by people with schizophrenia is higher than the general population. Violence risk is also known to be highest during the first episode of psychosis compared to later stages of illness. Despite this, there have been no comprehensive reviews conducted in the past 10 years examining rates of violence during FEP. We aimed to provide an updated review of the rate of violence in people with FEP. STUDY DESIGN: Meta-analytical techniques were used to identify pooled proportions of violence according to severity (less serious, serious, severe) and timing of violence (before presentation, at first presentation, after presentation to services). STUDY RESULTS: Twenty-two studies were included. The pooled prevalence was 13.4% (95% CI [9.0%-19.5%]) for any violence, 16.3% (95% CI [9.1%-27.4%]) for less serious violence, 9.7% (95% CI [5.4%-17.0%]) for serious violence and 2.7% for severe violence, regardless of time point. The pooled prevalence of any violence was 11.6% (95% CI [6.8%-18.9%]) before presentation, 20.8% (95% CI [9.8%-38.7%]) at first presentation and 13.3% (95% CI [7.3%-23.0%]) after presentation to services. CONCLUSION: Overall, rates of violence appear to be lower in more recent years. However, due to the high between-study heterogeneity related to study design, the findings must be interpreted with consideration of sample characteristics and other contextual factors. The prevalence of violence remained high at all-time points, suggesting that more targeted, holistic, and early interventions are needed for clinical FEP groups.


Assuntos
Transtornos Psicóticos , Violência , Humanos , Transtornos Psicóticos/epidemiologia , Violência/estatística & dados numéricos , Esquizofrenia/epidemiologia
18.
Neuropsychol Rehabil ; 23(4): 580-96, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23697371

RESUMO

Patients with schizophrenia often receive little by way of non-pharmacological interventions. Despite this, promising outcomes in programmes targeting cognitive deficits have been reported, suggesting that this is an area worthy of further investigation. The aim of the study was to implement and evaluate a brief computerised cognitive remediation programme designed to improve memory and attention in a male Chinese sample with chronic schizophrenia. Pre-testing was completed on a number of clinical and cognitive measures for intervention (n = 14) and treatment as usual (n = 17) participants. The intervention group then completed six weeks ( x no. of sessions = 12.78) of the computer-based cognitive remediation programme. Post-test measures for both groups were then collected again. Following the six week intervention, we found, contrary to our expectations, the intervention group improved on several of the clinical variables. The intervention group also performed better than the control group on the post-test measure of attention, but not verbal memory. These findings suggest that it is feasible to improve some aspects of cognitive abilities with a simple computerised training programme for people with serious mental illness.


Assuntos
Transtornos Cognitivos/etiologia , Transtornos Cognitivos/reabilitação , Prática Psicológica , Esquizofrenia/complicações , Psicologia do Esquizofrênico , Adulto , Análise de Variância , China , Desenho Assistido por Computador , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Escalas de Graduação Psiquiátrica , Comportamento Social , Tradução , Adulto Jovem
19.
World J Pediatr ; 19(12): 1181-1191, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37246167

RESUMO

BACKGROUND: The aim of this study was to identify similarities and differences in the unmet supportive care needs (USCN) of families of children with major chronic health conditions (CHCs) using a universal need assessment tool. METHODS: A cross-sectional online survey involving parents of children with congenital heart disease (CHD), type 1 diabetes mellitus (T1D), cancer, and asthma diagnosed within the last 5 years recruited via social media and support organizations. Thirty-four items assessing the USCN across six domains (care needs, physical and social needs, informational needs, support needs, financial needs, child-related emotional needs) were responded to on a 4-point Likert scale [no need (1) to high need (4)]. Descriptive statistics identified the level of need, and linear regressions identified factors associated with higher need domain scores. Due to small numbers, the asthma group was excluded from comparisons across CHCs. RESULTS: One hundred and ninety-four parents completed the survey (CHD: n = 97, T1D: n = 50, cancer: n = 39, and asthma: n = 8). Parents of children with cancer were most likely to report at least one USCN (92%), followed by parents of children with T1D (62%). The five most commonly reported USCN across CHCs were drawn from four domains: child-related emotional, support, care, and financial. Three need items were included in the top five needs for all conditions. A higher USCN was associated with a greater frequency of hospital visits and the absence of parental support. CONCLUSIONS: Using a universal need assessment tool, this is one of the first studies to characterize USCN in families of children diagnosed with common CHCs. While proportions endorsing different needs varied across conditions, the most endorsed needs were similar across the illness groups. This suggests that support programs or services could be shared across different CHCs. Video Abstract.

20.
Psychol Assess ; 35(6): 510-521, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36892878

RESUMO

Measurement invariance underlies construct validity generalization in psychology and must be demonstrated prior to any cross-population comparison of means and validity correlations. The purpose of this study was to evaluate the measurement invariance of the Wechsler Intelligence Scale for Children-Fifth Edition (WISC-V) across Australia and New Zealand (A&NZ) versus the U.S. normative samples. The WISC-V is the most widely used assessment of intelligence in children. Participants were census matched, nationally representative samples from A&NZ (n = 528) and the United States (n = 2,200) who completed the WISC-V standardization version. Baseline model estimation was conducted to ensure the same model showed acceptable fit in both samples separately. Measurement invariance was then examined across A&NZ and United States. The five-factor scoring model described in the test manual showed excellent fit in both samples. Results showed that the WISC-V demonstrated strict metric measurement invariance across the A&NZ and U.S. samples. Further, the results were consistent with the Cattell-Horn-Carroll (CHC) framework of cognitive abilities, indicating the generalizability of cognitive abilities across cultures. Small but significant differences in visual spatial latent means were found across females, highlighting the importance of local normative data. These findings suggest that the WISC-V scores can be meaningfully compared across A&NZ and United States and that the constructs, which align with CHC theory, and associated construct validity research, generalize across countries. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Assuntos
Psicometria , Escalas de Wechsler , Criança , Feminino , Humanos , Austrália , Análise Fatorial , Nova Zelândia , Estados Unidos , Escalas de Wechsler/normas
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA