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1.
BMC Public Health ; 23(1): 1671, 2023 08 30.
Artigo em Inglês | MEDLINE | ID: mdl-37649023

RESUMO

BACKGROUND: Determining the potential barriers responsible for delaying access to care, and elucidating pathways to early intervention should be a priority, especially in Arab countries where mental health resources are limited. To the best of our knowledge, no previous studies have examined the relationship between religiosity, stigma and help-seeking in an Arab Muslim cultural background. Hence, we propose in the present study to test the moderating role of stigma toward mental illness in the relationship between religiosity and help-seeking attitudes among Muslim community people living in different Arab countries. METHOD: The current survey is part of a large-scale multinational collaborative project (StIgma of Mental Problems in Arab CounTries [The IMPACT Project]). We carried-out a web-based cross-sectional, and multi-country study between June and November 2021. The final sample comprised 9782 Arab Muslim participants (mean age 29.67 ± 10.80 years, 77.1% females). RESULTS: Bivariate analyses showed that less stigmatizing attitudes toward mental illness and higher religiosity levels were significantly associated with more favorable help-seeking attitudes. Moderation analyses revealed that the interaction religiosity by mental illness stigma was significantly associated with help-seeking attitudes (Beta = .005; p < .001); at low and moderate levels of stigma, higher religiosity was significantly associated with more favorable help-seeking attitudes. CONCLUSION: Our findings preliminarily suggest that mental illness stigma is a modifiable individual factor that seems to strengthen the direct positive effect of religiosity on help-seeking attitudes. This provides potential insights on possible anti-stigma interventions that might help overcome reluctance to counseling in highly religious Arab Muslim communities.


Assuntos
Islamismo , Transtornos Mentais , Feminino , Humanos , Adolescente , Adulto Jovem , Adulto , Masculino , Árabes , Estudos Transversais , Atitude
2.
Soc Psychiatry Psychiatr Epidemiol ; 58(4): 559-568, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36348056

RESUMO

PURPOSE: Migrant status is a known risk factor for psychosis, but the underlying causes of this vulnerability are poorly understood. Recently, studies have begun to explore whether migrant status predicts transition to psychosis in individuals at clinical high risk (CHR) for psychosis. Results, however, have been inconclusive. The present study assessed the impact of migrant status on clinical symptoms and functional outcome in individuals at CHR for psychosis who took part in the NAPLS-3 study. METHODS: Participants' migrant status was classified as native-born, first-generation, or second-generation migrant. Clinical symptoms were assessed using the Structured Interview for Psychosis-Risk Syndromes (SIPS); functional outcome was measured using the Global Functioning Scales:Social and Role (GF:S; GF:R). Assessments were conducted at baseline, 12-months, 18-months, and 24-months follow-up. Generalized linear mixed models for repeated measures were used to examine changes over time and differences between groups. RESULTS: The overall sample included 710 individuals at CHR for psychosis (54.2% males; Age: M = 18.19; SD = 4.04). A mixed model analysis was conducted, and no significant differences between groups in symptoms or functioning were observed at any time point. Over time, significant improvement in symptoms and functioning was observed within each group. Transition rates did not differ across groups. CONCLUSION: We discuss potential factors that might explain the lack of group differences. Overall, migrants are a heterogeneous population. Discerning the impact of migration from that of neighborhood ethnic density, social disadvantage or socio-economic status of different ethnic groups could help better understand vulnerability and resilience to psychosis.


Assuntos
Transtornos Psicóticos , Migrantes , Masculino , Humanos , Adolescente , Feminino , Estudos Longitudinais , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/epidemiologia , Fatores de Risco , Sintomas Prodrômicos
3.
Soc Psychiatry Psychiatr Epidemiol ; 58(4): 641-656, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36583767

RESUMO

BACKGROUND: There is evidence that culture deeply affects beliefs about mental illnesses' causes, treatment, and help-seeking. We aimed to explore and compare knowledge, attitudes toward mental illness and help-seeking, causal attributions, and help-seeking recommendations for mental illnesses across various Arab countries and investigate factors related to attitudes toward help-seeking. METHODS: We carried out a multinational cross-sectional study using online self-administered surveys in the Arabic language from June to November 2021 across 16 Arab countries among participants from the general public. RESULTS: More than one in four individuals exhibited stigmatizing attitudes towards mental illness (26.5%), had poor knowledge (31.7%), and hold negative attitudes toward help-seeking (28.0%). ANOVA tests revealed a significant difference between countries regarding attitudes (F = 194.8, p < .001), knowledge (F = 88.7, p < .001), and help-seeking attitudes (F = 32.4, p < .001). Three multivariate regression analysis models were performed for overall sample, as well as Palestinian and Sudanese samples that displayed the lowest and highest ATSPPH-SF scores, respectively. In the overall sample, being female, older, having higher knowledge and more positive attitudes toward mental illness, and endorsing biomedical and psychosocial causations were associated with more favorable help-seeking attitudes; whereas having a family psychiatric history and endorsing religious/supernatural causations were associated with more negative help-seeking attitudes. The same results have been found in the Palestinian sample, while only stigma dimensions helped predict help-seeking attitudes in Sudanese participants. CONCLUSION: Interventions aiming at improving help-seeking attitudes and behaviors and promoting early access to care need to be culturally tailored, and congruent with public beliefs about mental illnesses and their causations.


Assuntos
Comportamento de Busca de Ajuda , Transtornos Mentais , Humanos , Feminino , Masculino , Comparação Transcultural , Árabes , Estudos Transversais , Transtornos Mentais/terapia , Transtornos Mentais/psicologia , Estigma Social , Atitude , Aceitação pelo Paciente de Cuidados de Saúde
4.
BMC Public Health ; 21(1): 1584, 2021 08 23.
Artigo em Inglês | MEDLINE | ID: mdl-34425779

RESUMO

BACKGROUND: Interoception is mental awareness, recognition and acknowledgement of physiological body signals. Understanding the role of sleep and interoception may provide a better understanding surrounding the sleep-health connection. Our primary objective was to examine the potential relationships between subjective sleep quality and multiple dimensions of interoceptive abilities in a large sample of young adults, a group who are vulnerable to sleep impairment and its widespread health consequences. METHODS: We conducted an online cross-sectional survey targeting young adults, aged 18-25 years. The Pittsburgh Sleep Quality Index (PSQI) was used to identify subjective sleep quality and the Multidimensional Assessment of Interoceptive Awareness Version 2 was used to assess eight domains of interoception. We conducted a series of Spearman's bivariate correlations to assess the relationships between global sleep quality as well as the seven PSQI sub-components in relation to the eight interoception outcomes. We then conducted quantile regression to assess if global PSQI score was an independent predictor of interoception. Participants (n = 609) consented and provided data. RESULTS: After adjustment, the global PSQI was a significant predictor of 'Non-Distracting', 'Emotional Awareness' and 'Trusting', where ß = - 0.10 (95% CI: - 0.14, - 0.07), ß = 0.05 (0.01, 0.09), and ß = - 0.10 (- 0.14, - 0.05), respectively. CONCLUSIONS: Our findings reveal a small, significant relationship between sleep quality and interoceptive abilities amongst young adults. Sleep impairment may inhibit interoceptive skills, thus adding value to the mechanistic explanation of the sleep-health relationship. Experimental and prospective studies are needed to determine temporal associations.


Assuntos
Interocepção , Adolescente , Adulto , Conscientização , Estudos Transversais , Humanos , Sensação , Sono , Adulto Jovem
5.
Int J Psychol ; 56(6): 825-833, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34125435

RESUMO

The COVID-19 pandemic and the associated infection prevention and control measures (e.g. quarantine, lockdown and isolation), have had an adverse impact on mental health. To date, the mental health status and challenges of foreign workers during the pandemic have been neglected in the literature. This cross-sectional web-based survey assessed levels of post-traumatic stress, depression, anxiety and insomnia among an international sample of foreign workers (n = 319) resident in the United Arab Emirates (UAE). The majority of participants were female (76%), European (69%) and highly educated (83% had a bachelor's or higher degree). Results indicate high rates of post-traumatic stress, depression, anxiety, and insomnia, especially among women, younger individuals, and those with a previous diagnosis of a psychological disorder. Additionally, foreign workers' perceptions of pandemic severity in their home nations (mild, moderate, severe) were positively correlated with their symptom levels of depression, anxiety and insomnia. Overall, these findings may help inform future public mental health strategy and pandemic preparedness plans with reference to safeguarding the psychological wellbeing of foreign workers.


Assuntos
COVID-19 , Pandemias , Ansiedade/epidemiologia , Controle de Doenças Transmissíveis , Estudos Transversais , Depressão/epidemiologia , Feminino , Humanos , Masculino , SARS-CoV-2 , Estresse Psicológico , Emirados Árabes Unidos/epidemiologia
6.
Behav Cogn Psychother ; 42(5): 526-34, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23517866

RESUMO

BACKGROUND: Metacognition has been described as the knowledge of our own cognitive processes. Metacognitive deficits are common in schizophrenia, but little is known about metacognition before the onset of full-blown psychosis. AIMS: This study aimed to longitudinally characterize metacognition in a sample of individuals at clinical high risk (CHR) for psychosis, and to determine if metacognition was related to later conversion to psychosis. METHOD: Participants (153 CHR individuals; 68 help seeking controls, HSC) were part of the large multi-site PREDICT study, which sought to determine predictors of conversion to psychosis. They were tested at baseline and 6 months using the Meta-Cognitions Questionnaire (MCQ) that has five sub-scales assessing different domains of metacognition. RESULTS: RESULTS of the mixed-effect models demonstrated significantly poorer scores at baseline for the CHR group compared to the HSC group in Negative beliefs about uncontrollability, Negative beliefs and the overall MCQ score. At the 6-month assessment, no difference was observed in metacognition between the two groups, but both groups showed improvement in metacognition over time. Those who later converted to psychosis had poorer performance on metacognitive beliefs at baseline. CONCLUSIONS: A poorer performance in metacognition can be seen as a marker of developing a full blown psychotic illness and confirms the potential value of assessing metacognitive beliefs in individuals vulnerable for psychosis.


Assuntos
Conscientização , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/psicologia , Cultura , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Esquizofrenia/diagnóstico , Psicologia do Esquizofrênico , Adolescente , Progressão da Doença , Feminino , Humanos , Estudos Longitudinais , Masculino , Escalas de Graduação Psiquiátrica/estatística & dados numéricos , Psicometria , Fatores de Risco , Transtorno da Personalidade Esquizotípica/diagnóstico , Transtorno da Personalidade Esquizotípica/psicologia , Inquéritos e Questionários , Adulto Jovem
7.
Int J Soc Psychiatry ; 69(7): 1658-1669, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37191228

RESUMO

BACKGROUND: The majority of research attention has been devoted to the link between religiosity and suicide risk, and a considerable amount of studies has been carried out on how stigma impacts individuals with mental health problems of different kinds. However, the interplay between religiosity, suicide literacy and suicide stigma has seldom been empirically researched, especially quantitatively. We sought through this study to redress the imbalance of research attention by examining the relationship between religiosity and suicide stigma; and the indirect and moderating effects of suicide literacy on this relationship. METHOD: A cross-sectional web-based survey was conducted among Arab-Muslim adults originating from four Arab countries (Egypt: N = 1029, Kuwait: N = 2182, Lebanon N = 781, Tunisia N = 2343; Total sample: N = 6335). The outcome measures included the Arabic Religiosity Scale which taps into variation in the degree of religiosity, the Stigma of Suicide Scale-short form to the solicit degree of stigma related to suicide, and the Literacy of Suicide Scale explores knowledge and understanding of suicide. RESULTS: Our Mediation analyses findings showed that literacy of suicide partially mediated the association between religiosity and stigmatizing attitude toward suicide. Higher religiosity was significantly associated with less literacy of suicide; higher literacy of suicide was significantly associated with less stigma of suicide. Finally, higher religiosity was directly and significantly associated with more stigmatization attitude toward suicide. CONCLUSION: We contribute the literature by showing, for the first time, that suicide literacy plays a mediating role in the association between religiosity and suicide stigma in a sample of Arab-Muslim community adults. This preliminarily suggests that the effects of religiosity on suicide stigma can be modifiable through improving suicide literacy. This implies that interventions targeting highly religious individuals should pay dual attention to increasing suicide literacy and lowering suicide stigma.


Assuntos
Islamismo , Suicídio , Adulto , Humanos , Árabes , Alfabetização , Estudos Transversais , Estigma Social
8.
Cogn Neuropsychiatry ; 17(2): 115-32, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-21722047

RESUMO

INTRODUCTION: Impaired depth perception, a fundamental aspect of early visual processing, has been shown in patients with schizophrenia suggesting a disturbance to magnocellular and possibly parvocellular pathways. Despite some evidence showing visual-perceptive deficits in people with schizotypal personality traits (SPT), depth perception has not been evaluated in these subjects. METHODS: 12 clinically healthy schizotypy and 17 control participants were examined using a novel stereoscopic depth perception task. A mixed ANOVA design considered the Group (SPT/control) as independent factor, and trial Block (BD/BD+/BD-) and target Condition (SDSS/SDDS/DDSS/DDDS) were considered as repeated measures. RESULTS: Schizotypal participants were not significantly different to controls on simple judgements of depth but demonstrated a subtle impairment in perceiving binocular depth when performing high difficulty judgements. CONCLUSIONS: The presence of subtle depth perception problems in schizotypal subjects, similar but less marked than those of schizophrenia patients, may suggest a less pervasive disturbance of early information processing. If so, such deficits could be considered as innate neurological changes that may occur in people vulnerable for schizophrenia, thus with the potential to be a novel intermediate phenotype.


Assuntos
Percepção de Profundidade/fisiologia , Julgamento , Psicologia do Esquizofrênico , Transtorno da Personalidade Esquizotípica/psicologia , Adolescente , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Escalas de Graduação Psiquiátrica , Adulto Jovem
9.
Early Interv Psychiatry ; 15(6): 1705-1712, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-33442933

RESUMO

AIM: Interoception is the ability to sense internal bodily changes and research indicates that it may play a role in the development of mental illness. In recent years, preliminary evidence has shown that interoception is impaired in people with psychosis. Interoceptive sensibility, a meta-cognitive aspect of interoception, has never been studied across the psychosis continuum. The present study aimed at assessing interoceptive sensibility in youth with psychotic-like experiences. METHOD: We invited a sample of young adults (N = 609; age 19-21 years) to complete an online survey that included a measure of interoceptive sensibility (the Multidimensional Assessment of Interoceptive Awareness-2) and the Community Assessment of Psychotic Experiences-Positive Scale -15 (CAPE-P15). Using the recommended cutoff for the CAPE-P15, the overall sample was divided into two groups (high/low risk for psychosis). RESULTS: Significant group differences were observed in several dimensions of interoceptive sensibility. A logistic regression analysis indicated that scores in the subscales of Not-Distracting, Not-Worrying, Attention-Regulation, Emotional Awareness, Body Listening, and Trusting significantly predicted increased risk for psychosis. CONCLUSION: Abnormal interoceptive sensibility may be a vulnerability marker for psychosis. These results, however, await further validation from additional comprehensive, longitudinal studies. Enhanced interoceptive sensibility has been reported following contemplative training, thus creating opportunities for future interventions to delay or prevent psychotic illness.


Assuntos
Interocepção , Transtornos Mentais , Adolescente , Adulto , Atenção , Conscientização/fisiologia , Emoções , Humanos , Interocepção/fisiologia , Adulto Jovem
10.
Int J Ment Health Syst ; 15(1): 29, 2021 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-33789685

RESUMO

BACKGROUND: Most mental health issues develop during adolescence, therefore identifying youth mental health needs and pathways to care is critical to improve prevention. To date, studies have typically focused on Western samples, while the impact of cultural diversity on perception of health and illness, and pathways to care, remain poorly understood. To address the shortage of studies conducted in the Arab world, and particularly in the United Arab Emirates (UAE), the present investigation aims to identify the characteristics of youth accessing mental health services in Dubai. METHODS: Data was collected retrospectively from patients' records at Rashid Hospital Child Psychiatry Service. Information collected included demographics, life stressors, symptoms duration, main diagnosis, and presence/absence of psychotic features in patients' symptomatology. The relationship between demographic and clinical variables was explored using Chi-square tests and negative binomial regression models. RESULTS: The sample included 99 treatment-seeking young patients (mean age 15.3; SD = 1.7); 47.5 % were Emirati (UAE national) and 52.5 % were non-Emirati patients. In our treatment-seeking youth sample Depressive disorders represented the most frequent diagnosis, followed by Bipolar and related disorders, Anxiety and stress related disorders, and Schizophrenia and psychotic disorders. Compared to Emirati patients, non-Emirati patients were more likely to report relationships with friends as a source of stress. Female help-seekers, compared to males, were more likely to report stressful relationships with family members, and to receive a diagnosis of Depressive disorders. The duration of symptoms before seeking help was significantly predicted by family stress, gender, self-harm behavior, a symptomatology with psychotic features, and a diagnosis of Anxiety disorders. CONCLUSIONS: The present study contributes to characterizing youth accessing mental health services at Rashid Hospital's Child Psychiatry service in Dubai. An overall prevalence of poor family functioning among help-seeking youth, and the importance of peer support for expatriate youth were highlighted. Gender differences in perceived stressors, diagnoses and help-seeking behavior suggest the need to promote help-seeking among young boys. While presentation with psychotic features seems to lead to quicker access to medical care, self-harm and anxiety appear to delay help-seeking. The potential implications of our results for promoting youth wellbeing in the region are discussed.

11.
Front Psychol ; 11: 1554, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32765355

RESUMO

The last two decades have witnessed growing interest in the study of social cognition and its multiple facets, including trust. Interpersonal trust is generally understood as the belief that others are not likely to harm you. When meeting strangers, judgments of trustworthiness are mostly based on fast evaluation of facial appearance, unless information about past behavior is available. In the past decade, studies have tried to understand the complex relationship between trust and gaze-cueing of attention (GCA) (i.e., attentional orienting following another person's gaze). This review will focus on the studies that used a gaze-cueing paradigm to explore this relationship. While the predictivity of the gaze-cue seems to consistently influence trustworthiness judgments, the impact of trust on gaze-cueing is less clear. Four studies found enhanced gaze-cueing effects with trustworthy faces; one found stronger effects of gaze-cueing with faces associated with undesirable behavior, but only when the observer's personal evaluations were taken into account. Four studies did not observe an effect of trust on gaze-cueing. Overall, studies have highlighted the complexity of this relationship, suggesting that multiple factors (including age, gender, the characteristics of the observer, and whether or not a threat is perceived) are likely to intervene in the interplay between trust and gaze-triggered attentional orienting. After discussing results in the context of existing theories of gaze-cueing and trust, we conclude that further investigation is needed to better understand this relationship and the contribution of social factors to attentional shifts guided by gaze.

12.
Front Psychiatry ; 11: 564172, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33240122

RESUMO

The impact of the COVID-19 pandemic on mental health is likely to be significant. Identifying vulnerable groups during the pandemic is essential for targeting psychological support, and in preparation for any second wave or future pandemic. Vulnerable groups are likely to vary across different societies; therefore, research needs to be conducted at a national and international level. This online survey explored generalized anxiety and depression symptoms in a community sample of adults (N = 1,039) in the United Arab Emirates (UAE) between April 8th and April 22nd, 2020. Respondents completed symptom measures of depression (PHQ8) and generalized anxiety (GAD7), along with psychosocial and demographic variables that might potentially influence such symptoms. Bivariate and multivariate associations were calculated for the main study variables. Levels of anxiety and depression were notably higher than those reported in previous (pre-pandemic) national studies. Similar variables were statistically significantly associated with both depression and anxiety, most notably younger age, being female, having a history of mental health problems, self or loved ones testing positive for COVID-19, and having high levels of COVID-related anxiety and economic threat. Sections of the UAE population experienced relatively high levels of depression and anxiety symptoms during the early stages of the pandemic. Several COVID-related and psychosocial variables were associated with heightened symptomatology. Identifying such vulnerable groups can help inform the public mental health response to the current and future pandemics.

13.
Sci Rep ; 9(1): 2151, 2019 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-30770857

RESUMO

The value people attribute to rewards is influenced both by the time and the effort required to obtain them. Impairments in these computations are described in patients with schizophrenia and appear associated with negative symptom severity. This study investigated whether deficits in temporal and effort cost computations can be observed in individuals with subclinical psychotic symptoms (PS) to determine if this dysfunction is already present in a potentially pre-psychotic period. Sixty participants, divided into three groups based on the severity of PS (high, medium and low), performed two temporal discounting tasks with food and money and a concurrent schedule task, in which the effort to obtain food increased over time. We observed that in high PS participants the discounting rate appeared linear and flatter than that exhibited by participants with medium and low PS, especially with food. In the concurrent task, compared to those with low PS, participants with high PS exerted tendentially less effort to obtain snacks only when the required effort was high. Participants exerting less effort in the higher effort condition were those with higher negative symptoms. These results suggest that aberrant temporal and effort cost computations might be present in individuals with subclinical PS and therefore could represent a vulnerability marker for psychosis.


Assuntos
Doenças Assintomáticas , Tomada de Decisões , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/patologia , Adulto , Feminino , Humanos , Masculino , Motivação , Testes Neuropsicológicos , Recompensa , Adulto Jovem
15.
Schizophr Res ; 189: 146-152, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28169088

RESUMO

People with psychosis show deficits recognizing facial emotions and disrupted activation in the underlying neural circuitry. We evaluated associations between facial emotion recognition and cortical thickness using a correlation-based approach to map structural covariance networks across the brain. Fifteen people with an early psychosis provided magnetic resonance scans and completed the Penn Emotion Recognition and Differentiation tasks. Fifteen historical controls provided magnetic resonance scans. Cortical thickness was computed using CIVET and analyzed with linear models. Seed-based structural covariance analysis was done using the mapping anatomical correlations across the cerebral cortex methodology. To map structural covariance networks involved in facial emotion recognition, the right somatosensory cortex and bilateral fusiform face areas were selected as seeds. Statistics were run in SurfStat. Findings showed increased cortical covariance between the right fusiform face region seed and right orbitofrontal cortex in controls than early psychosis subjects. Facial emotion recognition scores were not significantly associated with thickness in any region. A negative effect of Penn Differentiation scores on cortical covariance was seen between the left fusiform face area seed and right superior parietal lobule in early psychosis subjects. Results suggest that facial emotion recognition ability is related to covariance in a temporal-parietal network in early psychosis.


Assuntos
Mapeamento Encefálico , Córtex Cerebral/patologia , Reconhecimento Facial/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Transtornos da Percepção/etiologia , Transtornos Psicóticos/complicações , Adulto , Córtex Cerebral/diagnóstico por imagem , Expressão Facial , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Testes Neuropsicológicos , Transtornos da Percepção/diagnóstico por imagem , Projetos Piloto , Escalas de Graduação Psiquiátrica , Transtornos Psicóticos/diagnóstico por imagem , Adulto Jovem
16.
Schizophr Res ; 179: 91-96, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27720314

RESUMO

Cognitive insight is described as a balance between one's self-reflectiveness (recognition and correction of dysfunctional reasoning), and self-certainty (overconfidence). Neuroimaging studies have linked the ventrolateral prefrontal cortex (VLPFC) to cognitive insight in people with psychosis. However, the relationship between cognitive insight and structural connectivity between the VLPFC and other brain areas is unknown. Here, we investigated the modulation of cognitive insight on structural covariance networks involving the VLPFC in a first-episode psychosis sample. Fifteen patients with a first-episode psychosis provided magnetic resonance (MR) scans and completed the Beck Cognitive Insight Scale (BCIS). MR scans were also available for 15 historical controls. Seed-based analysis of structural covariance was conducted using the Mapping Anatomical Correlations Across the Cerebral Cortex (MACACC) methodology, whereby Pearson correlation coefficients were extracted between seed regions in left and right VLPFC and cortical thickness across the brain. Structural covariance maps between groups were compared at each vertex. In first-episode subjects, we evaluated the modulation of BCIS scores on cortical covariance between VLPFC and every other vertex. Findings showed no significant group difference between first-episode psychosis subjects and controls in thickness covariance seeded from left or right VLPFC. However, in first-episode psychosis subjects, a positive association with self-certainty was found in networks seeded from both left and right VLPFC with thickness in medial frontal cortex and right pars triangularis. No significant associations were found for self-reflectiveness. These results suggest that self-certainty, but not self-reflectiveness, positively modulated cortical covariance in a frontal network in patients with a first-episode psychosis.


Assuntos
Imageamento por Ressonância Magnética/métodos , Córtex Pré-Frontal/diagnóstico por imagem , Transtornos Psicóticos/diagnóstico por imagem , Transtornos Psicóticos/fisiopatologia , Esquizofrenia/diagnóstico por imagem , Esquizofrenia/fisiopatologia , Autoimagem , Adulto , Feminino , Humanos , Masculino , Projetos Piloto , Autoavaliação (Psicologia) , Adulto Jovem
17.
Schizophr Res ; 172(1-3): 16-22, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26899212

RESUMO

Compared to non-clinical subjects, people with psychosis show poor cognitive insight as reflected in low Self-Reflectiveness and high Self-Certainty. Neuroimaging studies have reported that 1) low Self-Reflectiveness is associated with volumetric reductions in ventrolateral prefrontal cortex (VLPFC), 2) higher Self-Certainty is associated with volumetric reductions in hippocampus, and 3) higher Self-Certainty is associated with fractional anisotropy in the fornix, in people with psychosis. The aims of the current study were to expand on this research by 1) performing an exploratory whole-brain cortical thickness analysis of the neural correlates of cognitive insight, to reveal whether regions outside the VLPFC are important for cognitive insight, and 2) to evaluate associations between cognitive insight and subfields of the hippocampus, which are distinct, interacting, and have different functions. We also aimed to replicate previous research documenting associations between cognitive insight and 3) total hippocampal volumes and 4) fornix fractional anisotropy. Fifteen people with a first-episode psychosis completed the Beck Cognitive Insight Scale and provided magnetic resonance and diffusion tensor imaging scans. Cortical thickness and hippocampal volumes were analyzed in FreeSurfer, and fornixfractional anisotropy was analyzed in Diffusion Toolkit/TrackVis. Higher Self-Reflectiveness and lower Self-Certainty significantly associated with thickness and thinness in VLPFC, respectively, as well as thickness and thinness in widespread frontal, parietal and temporal cortices. No associations emerged between Self-Reflectiveness or Self-Certainty and hippocampal total or sub-field volumes, or fornix fractional anisotropy. Results suggest that the neural correlates of cognitive insight involve a network of frontal, temporal and parietal brain regions.


Assuntos
Córtex Cerebral/diagnóstico por imagem , Cognição , Transtornos Psicóticos/diagnóstico por imagem , Transtornos Psicóticos/psicologia , Autoimagem , Doença Aguda , Adulto , Antipsicóticos/uso terapêutico , Córtex Cerebral/patologia , Imagem de Tensor de Difusão , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Tamanho do Órgão , Escalas de Graduação Psiquiátrica , Transtornos Psicóticos/tratamento farmacológico , Transtornos Psicóticos/patologia , Esquizofrenia/diagnóstico por imagem , Esquizofrenia/tratamento farmacológico , Esquizofrenia/patologia , Psicologia do Esquizofrênico , Adulto Jovem
19.
Psychiatry Res ; 225(1-2): 93-98, 2015 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-25467705

RESUMO

Individuals at clinical high risk (CHR) of psychosis evidence cognitive deficits. Given suggestions that deficits in cognition are related to poor functional outcome, cognition is a good treatment target. The aim of this study was to test the efficacy of cognitive remediation therapy (CRT) in improving cognition of CHR individuals. Participants were tested at baseline, immediately following CRT and 9 months post-baseline. The mixed effects modelling demonstrated no differences in cognition between the experimental group and the control group at any time point. For the experimental group, however, there was a trend towards improvement in speed of processing between baseline and 9-month follow-up (t(29)=-2.91, P=0.06) and at post-CRT compared to 9-month follow-up (t(29)=-2.99, P<0.05). In the control group, significant improvements in working memory were observed between post-CRT and 9-month follow-up (t(29)=-3.06, P<0.05). Despite significant improvements in social functioning in the intervention group between baseline and 9-month follow-up (t(28)=-3.26, P<0.05), these improvements were not correlated with cognition. There were trends towards improvement and no trends of decline in the two groups. While CRT may be valuable for individuals at CHR, the type of intervention employed needs to be carefully considered.


Assuntos
Transtornos Cognitivos/terapia , Testes Neuropsicológicos/estatística & dados numéricos , Ensino de Recuperação/métodos , Esquizofrenia/terapia , Psicologia do Esquizofrênico , Transtorno da Personalidade Esquizotípica/terapia , Adolescente , Adulto , Alberta , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/psicologia , Feminino , Seguimentos , Humanos , Masculino , Memória de Curto Prazo , Projetos Piloto , Psicometria , Risco , Esquizofrenia/diagnóstico , Transtorno da Personalidade Esquizotípica/diagnóstico , Transtorno da Personalidade Esquizotípica/psicologia , Método Simples-Cego , Adulto Jovem
20.
Schizophr Res Cogn ; 2(3): 133-139, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27695675

RESUMO

Social cognition, the mental operations that underlie social interactions, is a major construct to investigate in schizophrenia. Impairments in social cognition are present before the onset of psychosis, and even in unaffected first-degree relatives, suggesting that social cognition may be a trait marker of the illness. In a large cohort of individuals at clinical high risk for psychosis (CHR) and healthy controls, three domains of social cognition (theory of mind, facial emotion recognition and social perception) were assessed to clarify which domains are impaired in this population. Six-hundred and seventy-five CHR individuals and 264 controls, who were part of the multi-site North American Prodromal Longitudinal Study, completed The Awareness of Social Inference Test, the Penn Emotion Recognition task, the Penn Emotion Differentiation task, and the Relationship Across Domains, measures of theory of mind, facial emotion recognition, and social perception, respectively. Social cognition was not related to positive and negative symptom severity, but was associated with age and IQ. CHR individuals demonstrated poorer performance on all measures of social cognition. However, after controlling for age and IQ, the group differences remained significant for measures of theory of mind and social perception, but not for facial emotion recognition. Theory of mind and social perception are impaired in individuals at CHR for psychosis. Age and IQ seem to play an important role in the arising of deficits in facial affect recognition. Future studies should examine the stability of social cognition deficits over time and their role, if any, in the development of psychosis.

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