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1.
Cell ; 186(26): 5751-5765.e16, 2023 12 21.
Artículo en Inglés | MEDLINE | ID: mdl-37989313

RESUMEN

The hedonic value of salt fundamentally changes depending on the internal state. High concentrations of salt induce innate aversion under sated states, whereas such aversive stimuli transform into appetitive ones under sodium depletion. Neural mechanisms underlying this state-dependent salt valence switch are poorly understood. Using transcriptomics state-to-cell-type mapping and neural manipulations, we show that positive and negative valences of salt are controlled by anatomically distinct neural circuits in the mammalian brain. The hindbrain interoceptive circuit regulates sodium-specific appetitive drive , whereas behavioral tolerance of aversive salts is encoded by a dedicated class of neurons in the forebrain lamina terminalis (LT) expressing prostaglandin E2 (PGE2) receptor, Ptger3. We show that these LT neurons regulate salt tolerance by selectively modulating aversive taste sensitivity, partly through a PGE2-Ptger3 axis. These results reveal the bimodal regulation of appetitive and tolerance signals toward salt, which together dictate the amount of sodium consumption under different internal states.


Asunto(s)
Vías Nerviosas , Sodio , Gusto , Animales , Vías Nerviosas/fisiología , Gusto/fisiología , Ratones , Perfilación de la Expresión Génica
2.
Phys Occup Ther Pediatr ; : 1-15, 2024 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-38836872

RESUMEN

AIM: The purpose of this study was to estimate the extent to which neurodevelopmental disorders (NDD's) symptoms (motor, sensory, attention and executive function) are associated with aspects of social function among school aged children. METHODS: This cross-sectional study included 39 children aged 6-9 years old (71.8% boys) who were referred to child development centers due to motor, sensory, and/or cognitive difficulties. The parents completed NDD's symptoms questionnaires: Developmental Coordination Disorder Questionnaire; Child Sensory Profile-2; Attention Deficit Hyperactive Disorder (ADHD) Rating Scale and the Behavior Rating Inventory of Executive Function. They also completed the Social Skills Improvement System and a social participation measure. RESULTS: Analysis demonstrated low to moderate correlations between social functioning aspects and the majority of NDD's symptoms. Executive functioning was the only predictor of social skills and social participation and accounted for most of the variability of behavioral problems, alongside a small contribution of ADHD symptoms. CONCLUSION: The findings contribute to the accumulating body of knowledge regarding social abilities of children with NDD's and suggest new information as to the effect of executive functions in this domain. Along with conducting a routine evaluation of social skills among children suspected to have NDD's, executive functions should also be comprehensively evaluated.

3.
Aust Occup Ther J ; 71(4): 475-485, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38279842

RESUMEN

INTRODUCTION: Previous research indicates that children with Paediatric Acute-onset Neuropsychiatric Syndrome (PANS) experience sensory reactivity differences that impact occupational performance. The purpose of this study was to determine whether there are differences in sensory reactivity in these children across two different time points; during exacerbation and during remission, using the Sensory Processing Measure (SPM) Home-Form. The study also sought to investigate whether children with PANS experience sensory differences during remission periods, when compared with SPM Home-Form norms. METHODS: A two-period bidirectional case-crossover design was used, and an online assessment was conducted to measure sensory reactivity. Parents of children aged 4.6 to 13.1 years with a diagnosis of PANS were recruited from various sites across Australia, USA, England, Ireland, Scotland, Canada, and New Zealand. The SPM Home-Form was used to measure sensory reactivity at two time points, when PANS was in remission (T-R) and in exacerbation (T-E). Study entry was permitted at either T-E or T-R. Participant exacerbation status was monitored over a maximum 12-month period, and a follow-up SPM Home-Form was sent when a change in exacerbation status was indicated. A linear mixed model was used to assess the difference between SPM Home-Form norm-referenced scores during exacerbation and remission. RESULTS: The study included 82 participants, with 80 providing data at study entry, and 27 providing data at follow-up. Results showed a statistically significant decline in performance across the SPM Home-Form domains of Hearing, Social Participation, Planning and Ideas, and Total Sensory Systems T-scores during exacerbation when compared with remission data. Results also demonstrated atypical sensory reactivity across Vision, Hearing, Touch, Balance and Motion, and Total Sensory Systems domains during periods of remission compared with SPM Home-Form norms. CONCLUSION: This study found that children with PANS experience significant sensory reactivity differences during exacerbation and remission across multiple sensory domains, with a decline in performance during exacerbation. Where there are occupational performance challenges, occupational therapists should consider administering sensory assessments so that effective intervention plans addressing the unique sensory reactivity needs of children with PANS can be developed.


Asunto(s)
Terapia Ocupacional , Humanos , Niño , Masculino , Femenino , Terapia Ocupacional/métodos , Preescolar , Adolescente , Estudios Cruzados , Sensación/fisiología , Australia , Enfermedades Autoinmunes , Trastorno Obsesivo Compulsivo
4.
Occup Ther Health Care ; : 1-12, 2023 Oct 25.
Artículo en Inglés | MEDLINE | ID: mdl-37878377

RESUMEN

This study aimed to explore sensory processing abilities in kindergarten children based on parents' perceptions of their children's sensory functioning. Employing a non-probability sampling technique, parents of 957 typical kindergarteners (52% males, 48% females) aged between four and six years in Amman-Jordan were surveyed via Arabic-Short Sensory Profile (A-SSP). Results showed that 37% and 24% of children exhibited definite difference and probable difference, respectively. These proportions indicate the importance of including sensory processing as a variable in studies that target children typical development, and to support the development of sensory processing among Jordanian children.

5.
Rev Infirm ; 72(292): 29-31, 2023.
Artículo en Francés | MEDLINE | ID: mdl-37364973

RESUMEN

The development of alternatives to seclusion and restraint is a priority for psychiatric care services. Among them, the implementation of soothing spaces is currently experiencing considerable growth.


Asunto(s)
Trastornos Mentales , Psiquiatría , Humanos , Aislamiento de Pacientes/métodos , Aislamiento de Pacientes/psicología , Restricción Física/psicología , Psicoterapia , Hospitales Psiquiátricos , Trastornos Mentales/terapia , Trastornos Mentales/psicología
6.
Sensors (Basel) ; 22(5)2022 Feb 25.
Artículo en Inglés | MEDLINE | ID: mdl-35270991

RESUMEN

Background: Difficulty in modulating multisensory input, specifically the sensory over-responsive (SOR) type, is linked to pain hypersensitivity and anxiety, impacting daily function and quality of life in children and adults. Reduced cortical activity recorded under resting state has been reported, suggestive of neuromodulation as a potential therapeutic modality. This feasibility study aimed to explore neurofeedback intervention in SOR. Methods: Healthy women with SOR (n = 10) underwent an experimental feasibility study comprising four measurement time points (T1­baseline; T2­preintervention; T3­postintervention; T4­follow-up). Outcome measures included resting-state EEG recording, in addition to behavioral assessments of life satisfaction, attaining functional goals, pain sensitivity, and anxiety. Intervention targeted the upregulation of alpha oscillatory power over ten sessions. Results: No changes were detected in all measures between T1 and T2. Exploring the changes in brain activity between T2 and T4 revealed power enhancement in delta, theta, beta, and gamma oscillatory bands, detected in the frontal region (p = 0.03−<0.001; Cohen's d = 0.637−1.126) but not in alpha oscillations. Furthermore, a large effect was found in enhancing life satisfaction and goal attainment (Cohen's d = 1.18; 1.04, respectively), and reduced pain sensitivity and anxiety trait (Cohen's d = 0.70). Conclusion: This is the first study demonstrating the feasibility of neurofeedback intervention in SOR.


Asunto(s)
Neurorretroalimentación , Adulto , Trastornos de Ansiedad , Niño , Estudios de Factibilidad , Femenino , Lóbulo Frontal , Humanos , Neurorretroalimentación/fisiología , Calidad de Vida
7.
Cereb Cortex ; 30(12): 6097-6107, 2020 11 03.
Artículo en Inglés | MEDLINE | ID: mdl-32607565

RESUMEN

Evoked neural activity in sensory regions and perception of sensory stimuli are modulated when the stimuli are the consequence of voluntary movement, as opposed to an external source. It has been suggested that such modulations are due to motor commands that are sent to relevant sensory regions during voluntary movement. However, given the anatomical-functional laterality bias of the motor system, it is plausible that the pattern of such behavioral and neural modulations will also exhibit a similar bias, depending on the effector triggering the stimulus (e.g., right/left hand). Here, we examined this issue in the visual domain using behavioral and neural measures (fMRI). Healthy participants judged the relative brightness of identical visual stimuli that were either self-triggered (using right/left hand button presses), or triggered by the computer. Stimuli were presented either in the right or left visual field. Despite identical physical properties of the visual consequences, we found stronger perceptual modulations when the triggering hand was ipsi- (rather than contra-) lateral to the stimulated visual field. Additionally, fMRI responses in visual cortices differentiated between stimuli triggered by right/left hand. Our findings support a model in which voluntary actions induce sensory modulations that follow the anatomical-functional bias of the motor system.


Asunto(s)
Encéfalo/fisiología , Actividad Motora , Desempeño Psicomotor , Percepción Visual/fisiología , Adolescente , Adulto , Mapeo Encefálico , Cerebelo/fisiología , Femenino , Mano , Humanos , Imagen por Resonancia Magnética , Masculino , Corteza Motora/fisiología , Corteza Visual/fisiología , Campos Visuales , Adulto Joven
8.
Aust Occup Ther J ; 68(3): 217-227, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33432676

RESUMEN

INTRODUCTION: Sensory modulation refers to a condition in which an individual's behavioural responses to sensory stimuli do not correspond to the nature or intensity of the stimuli. Sensory modulation affects children's participation in everyday activities and their well-being. The most common assessments used are caregiver questionnaires. Our aim is twofold; first to develop a clinical evaluative measure, the Sensory Adventure Measure (SAM), for directly assessing sensory modulation in children via therapists and children's self-report, second, we aim to establish its reliability and validity. METHODS: The study sample comprised 87 children ranging in age from 4 to 6 years and 11 months old divided into two groups: study group included 63 children with mild developmental disabilities and the control group included 24 typically developed children. The SAM's internal consistency, test-retest reliability, and inter-rater reliability were examined. In addition, criterion validity was established using the total score of the Short Sensory Profile (SSP) and construct validity was established by known group differences. RESULTS: The SAM exhibited good internal consistency (α = 0.83, 0.85) and moderate to very good test-retest reliability (r = 0.96, 0.98, 0.75). Inter-rater reliability was strong (r = 0.80-0.83). Moderate correlation was found between the SAM Therapist Rating of Magnitude total score and the total score of the SSP and significant differences were found in the SAM scores between groups thus establishing validity. CONCLUSIONS: The SAM demonstrated good psychometric properties and can be used as a reliable and valid measure to assess sensory modulation among children aged 4 to 6 years. The SAM can be used by therapists to assess sensory modulation disorder based on observed responses to sensory stimuli and the child's self-report. The SAM contributes additional perspective to the evaluation process of sensory modulation disorder.


Asunto(s)
Terapia Ocupacional , Niño , Preescolar , Humanos , Lactante , Psicometría , Reproducibilidad de los Resultados , Autoinforme , Encuestas y Cuestionarios
9.
Neuroimage ; 218: 116879, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32422401

RESUMEN

Blink-related oscillations (BROs) are a recently discovered neurophysiological response associated with spontaneous blinking, distinct from the well-known oculomotor and visual suppression effects. BROs strongly activate the bilateral precuneus along with other cortical regions involved in visuospatial processing and associative episodic memory, and are believed to represent environmental monitoring processes that occur following blink-induced visual interruptions. Although these responses have been reported across multiple imaging modalities under both resting and cognitive loading conditions, it is yet unknown whether these responses also exist under external sensory stimulation conditions. To address this, we investigated BRO responses in healthy adults using 64-channel electroencephalography (EEG), while participants underwent passive external auditory and visual stimulation. Our results showed that BRO responses are present under both auditory and visual stimulation conditions (p â€‹< â€‹0.05), with similar temporal and spectral features compared to rest. However, visual stimulation did result in decreased BRO amplitude compared to auditory and resting conditions (p â€‹< â€‹0.05), suggesting decreased neuronal resources for processing blink-related information in the visual but not auditory environment. There were also additional pre-blink spectral changes in the visual condition compared to rest (p â€‹< â€‹0.05), which suggest that passive visual stimulation induces neural preparatory processes occurring in anticipation of the upcoming blink event. Together, these findings provide new and compelling evidence that blink-related neural processes are modulated not only by the internal cognitive loading due to simultaneous task demands, but also by competing external sensory requirements. This highlights the link between blinking and cognition, and further demonstrates the importance of BROs as a new window into brain function.


Asunto(s)
Parpadeo/fisiología , Encéfalo/fisiología , Estimulación Acústica , Adulto , Electroencefalografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estimulación Luminosa
10.
Pain Med ; 21(9): 1902-1912, 2020 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-31782772

RESUMEN

OBJECTIVE: This comparative cross-sectional study aimed to characterize individuals with substance use disorder (SUD) in self-perception of pain sensitivity, experimental auditory aversiveness, and non-noxious sensory responsiveness, as well as examine the associations with SUD. METHODS: Therapeutic community (TC) individuals with SUD (N = 63, male 88.9%) and healthy controls (N = 60, male 86.7%) completed the Pain Sensitivity Questionnaire (PSQ) and the Sensory Responsiveness Questionnaire-Intensity Scale (SRQ-IS), followed by a psychophysical auditory battery, the Battery of Averseness to Sounds (BAS)-Revised. RESULTS: The SUD group scored higher on the PSQ (P < 0.0001), BAS-R aversiveness (P < 0.0001), BAS-R-unpleasantness (P < 0.0001), and on the aftersensation of auditory aversiveness (P < 0.0001) and unpleasantness (P < 0.000). Fifty-four percent of the SUD group vs 11.7% of the control group were identified as having sensory modulation dysfunction (SMD; P < 0.0001). Logistic regression modeling revealed that the SRQ-IS-Aversive score had a stronger relationship, indicating a 12.6-times odds ratio for SUD (P = 0.0002). Finally, a risk score calculated from a linear combination of the logistic regression model parameters is presented based on the PSQ and SRQ. CONCLUSIONS: This is the first study to explore sensory and aversive domains using experimental and self-reporting in situ, revealing pain perception alteration that co-occurs with high prevalence of SMD, specifically of the over-responsive type. Findings may be significant in clinical practice for treating pain, and for expanding therapeutic modalities as part of broader rehabilitation in TC and beyond, to better meet personalized therapy.


Asunto(s)
Dolor , Trastornos Relacionados con Sustancias , Estudios Transversales , Humanos , Masculino , Percepción del Dolor , Sensación
11.
BMC Psychiatry ; 20(1): 292, 2020 06 10.
Artículo en Inglés | MEDLINE | ID: mdl-32522183

RESUMEN

BACKGROUND: Children with attention-deficit/hyperactivity disorder (ADHD) often demonstrate sensory processing difficulties in the form of altered sensory modulation, which may contribute to their symptomatology. Our objective was to investigate the neurophysiological correlates of sensory processing deficits and the electrophysiological characteristics of early information processing in adult ADHD, measured by the P1 event-related potential (ERP). METHODS: We obtained ERPs during a Go/NoGo task from 26 adult patients with ADHD and 25 matched controls using a high-density 128-channel BioSemi ActiveTwo recording system. RESULTS: ADHD patients had a significantly reduced P1 component at occipital and inferotemporal scalp areas compared to controls. The reduction was associated with inattention and hyperactivity symptom severity, as measured by the Conners' Adult ADHD Rating Scale. ADHD patients with higher inattention scores had significantly smaller P1 amplitudes at posterior scalp sites, while higher hyperactivity scores were associated with higher P1 amplitudes. CONCLUSIONS: Deficits in early sensory processing, as measured by the P1 ERP component, are present in adult ADHD patients and are associated with symptom severity. These findings are suggestive of bottom-up cognitive deficits in ADHD driven by impairments in early visual processing, and provide evidence that sensory processing problems are present at the neurophysiological level in this population.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Potenciales Evocados , Adulto , Cognición , Electroencefalografía , Femenino , Humanos , Masculino
12.
Aust Occup Ther J ; 67(5): 458-469, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32648269

RESUMEN

INTRODUCTION: Occupational therapists work collaboratively with young people experiencing mental ill-health to enable meaningful occupational participation in daily life. Sensory modulation is used as a means of developing self-regulation and enabling occupational participation. Published literature on sensory modulation in mental health settings is primarily located within acute inpatient settings and focuses on self-regulation. Little is known about the use of sensory modulation within community settings to enhance occupational participation in daily lives of people with mental-ill health. This study investigated the experiences of young people and their families who engaged in sensory modulation assessment (Adolescent/Adult Sensory Profile) and intervention (between one and twelve sessions) as part of community mental health care at a large area mental health service in Melbourne, Australia. METHODS: The qualitative study used naturalistic inquiry methodology involving semi-structured interviews with six young people and three families. Nine interview transcripts were thematically analysed to elicit the experiences of sensory modulation assessment and intervention, and how this may influence daily life. RESULTS: Thematic analysis revealed that young people and their families' positive experiences of sensory modulation were underpinned by processes of co-creation: (a) knowing yourself; (b) understanding 'the why': developing shared reasons for engaging in sensory modulation; (c) creating comfort; (d) creating connection; and (e) constantly learning. Sensory modulation supported occupational participation in young peoples' daily lives in the areas of sleep, study, relationships, self-care, independent living, being in the world, and doing new things. CONCLUSION: Young people and their families valued the process of co-creating sensory modulation assessment and intervention to enhance occupational participation. Results revealed that sensory modulation assessment and intervention was optimised when it was a process of co-creation. Future research should investigate the effectiveness of sensory modulation in enhancing occupational participation in these domains that influence daily life.


Asunto(s)
Servicios Comunitarios de Salud Mental/métodos , Trastornos Mentales/rehabilitación , Terapia Ocupacional/métodos , Adolescente , Australia , Familia/psicología , Femenino , Humanos , Relaciones Interpersonales , Entrevistas como Asunto , Masculino , Salud Mental , Investigación Cualitativa , Autocuidado , Sueño , Adulto Joven
13.
J Neurosci ; 38(24): 5632-5648, 2018 06 13.
Artículo en Inglés | MEDLINE | ID: mdl-29773755

RESUMEN

Two factors play important roles in shaping perception: the allocation of selective attention to behaviorally relevant sensory features, and prior expectations about regularities in the environment. Signal detection theory proposes distinct roles of attention and expectation on decision-making such that attention modulates early sensory processing, whereas expectation influences the selection and execution of motor responses. Challenging this classic framework, recent studies suggest that expectations about sensory regularities enhance the encoding and accumulation of sensory evidence during decision-making. However, it is possible, that these findings reflect well documented attentional modulations in visual cortex. Here, we tested this framework in a group of male and female human participants by examining how expectations about stimulus features (orientation and color) and expectations about motor responses impacted electroencephalography (EEG) markers of early sensory processing and the accumulation of sensory evidence during decision-making (the early visual negative potential and the centro-parietal positive potential, respectively). We first demonstrate that these markers are sensitive to changes in the amount of sensory evidence in the display. Then we show, counter to recent findings, that neither marker is modulated by either feature or motor expectations, despite a robust effect of expectations on behavior. Instead, violating expectations about likely sensory features and motor responses impacts posterior alpha and frontal theta oscillations, signals thought to index overall processing time and cognitive conflict. These findings are inconsistent with recent theoretical accounts and suggest instead that expectations primarily influence decisions by modulating post-perceptual stages of information processing.SIGNIFICANCE STATEMENT Expectations about likely features or motor responses play an important role in shaping behavior. Classic theoretical frameworks posit that expectations modulate decision-making by biasing late stages of decision-making including the selection and execution of motor responses. In contrast, recent accounts suggest that expectations also modulate decisions by improving the quality of early sensory processing. However, these effects could instead reflect the influence of selective attention. Here we examine the effect of expectations about sensory features and motor responses on a set of electroencephalography (EEG) markers that index early sensory processing and later post-perceptual processing. Counter to recent empirical results, expectations have little effect on early sensory processing but instead modulate EEG markers of time-on-task and cognitive conflict.


Asunto(s)
Atención/fisiología , Encéfalo/fisiología , Toma de Decisiones/fisiología , Discriminación en Psicología/fisiología , Motivación/fisiología , Femenino , Humanos , Masculino , Estimulación Luminosa , Percepción Visual/fisiología , Adulto Joven
14.
J Exp Biol ; 222(Pt 3)2019 02 08.
Artículo en Inglés | MEDLINE | ID: mdl-30559302

RESUMEN

The integration of distinct sensory modalities is essential for behavioural decision making. In Caenorhabditiselegans, this process is coordinated by neural circuits that integrate sensory cues from the environment to generate an appropriate behaviour at the appropriate output muscles. Food is a multimodal cue that impacts the microcircuits to modulate feeding and foraging drivers at the level of the pharyngeal and body wall muscle, respectively. When food triggers an upregulation in pharyngeal pumping, it allows the effective ingestion of food. Here, we show that a Celegans mutant in the single gene orthologous to human neuroligins, nlg-1, is defective in food-induced pumping. This was not due to an inability to sense food, as nlg-1 mutants were not defective in chemotaxis towards bacteria. In addition, we found that neuroligin is widely expressed in the nervous system, including AIY, ADE, ALA, URX and HSN neurons. Interestingly, despite the deficit in pharyngeal pumping, neuroligin was not expressed within the pharyngeal neuromuscular network, which suggests an extrapharyngeal regulation of this circuit. We resolved electrophysiologically the neuroligin contribution to the pharyngeal circuit by mimicking food-dependent pumping and found that the nlg-1 phenotype is similar to mutants impaired in GABAergic and/or glutamatergic signalling. We suggest that neuroligin organizes extrapharyngeal circuits that regulate the pharynx. These observations based on the molecular and cellular determinants of feeding are consistent with the emerging role of neuroligin in discretely impacting functional circuits underpinning complex behaviours.


Asunto(s)
Caenorhabditis elegans/fisiología , Moléculas de Adhesión Celular Neuronal/genética , Animales , Caenorhabditis elegans/genética , Moléculas de Adhesión Celular Neuronal/metabolismo , Fenómenos Electrofisiológicos , Conducta Alimentaria/fisiología , Perfilación de la Expresión Génica , Sistema Nervioso , Faringe/fisiología
15.
Artículo en Inglés | MEDLINE | ID: mdl-28918475

RESUMEN

A detailed account is given by the octopaminergic innervation of the antennal heart in Schistocerca gregaria using various immunohistochemical methods. Anterograde axonal filling illustrates the unilateral innervation on the medial ventral surface of the pumping muscle of the antennal heart via the paired corpora cardiaca nerve III. In addition, antibody staining revealed that ascending axons of this nerve terminate at the ampullae of the antennal heart forming synaptoid structures and extensive neurohaemal release sites. Due to the innervation by two dorsal unpaired median neurons, the presence of the biogenic amines octopamine and tyramine could be visualized by immunocytochemistry in an insect antennal heart for the first time. The data suggest that tyramine acts as a precursor and not purely as an independent transmitter. While the octopaminergic fibers innervating the pumping muscle of the antennal heart indicate a cardioregulatory role, we conclude that octopamine released from the neurohaemal area is pumped into the antennae and an involvement in the modulation of the antennal sensory sensitivity is discussed.


Asunto(s)
Antenas de Artrópodos/inervación , Antenas de Artrópodos/metabolismo , Saltamontes/citología , Saltamontes/metabolismo , Octopamina/metabolismo , Animales , Biotina/análogos & derivados , Biotina/metabolismo , Sistema Cardiovascular/anatomía & histología , Sistema Cardiovascular/metabolismo , Femenino , Proteínas de Insectos/metabolismo , Masculino , Músculos/inervación , Músculos/metabolismo , Neuronas/citología , Neuronas/metabolismo , Estreptavidina/metabolismo , Sinapsinas/metabolismo , Tiramina/metabolismo
16.
Cereb Cortex ; 27(1): 68-82, 2017 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-28365774

RESUMEN

Attention and perception are potentiated for emotionally significant stimuli, promoting efficient reactivity and survival. But does such enhancement extend to stimuli simultaneously presented across different sensory modalities? We used functional magnetic resonance imaging in humans to examine the effects of visual emotional signals on concomitant sensory inputs in auditory, somatosensory, and visual modalities. First, we identified sensory areas responsive to task-irrelevant tones, touches, or flickers, presented bilaterally while participants attended to either a neutral or a fearful face. Then, we measured whether these responses were modulated by the emotional content of the face. Sensory responses in primary cortices were enhanced for auditory and tactile stimuli when these appeared with fearful faces, compared with neutral, but striate cortex responses to the visual stimuli were reduced in the left hemisphere, plausibly as a consequence of sensory competition. Finally, conjunction and functional connectivity analyses identified 2 distinct networks presumably responsible for these emotional modulatory processes, involving cingulate, insular, and orbitofrontal cortices for the increased sensory responses, and ventrolateral prefrontal cortex for the decreased sensory responses. These results suggest that emotion tunes the excitability of sensory systems across multiple modalities simultaneously, allowing the individual to adaptively process incoming inputs in a potentially threatening environment.


Asunto(s)
Atención/fisiología , Percepción Auditiva/fisiología , Corteza Cerebral/fisiología , Expresión Facial , Miedo/fisiología , Tacto/fisiología , Percepción Visual/fisiología , Adolescente , Adulto , Reconocimiento Facial/fisiología , Miedo/psicología , Femenino , Humanos , Vías Visuales/fisiología , Adulto Joven
17.
Australas Psychiatry ; 26(5): 514-519, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29417830

RESUMEN

OBJECTIVES: This paper reports a pilot study exploring the benefits of offering sensory modulation within a mental health emergency setting for consumers experiencing distress during a psychiatric presentation. METHODS: Seventy-four consumers with a mental health presentation reported on their sensory modulation use experiences during their stay in a South Australian tertiary teaching hospital emergency department. An evaluation form was used to document use of items, self-reported distress pre and post sensory modulation use, and other consumer experiences. RESULTS: Consumers used between one and six sensory items for a median duration of 45 min. There was a statistically significant reduction ( t(73) = 15.83, p < .001) in self-reported distress post sensory modulation use, and consumers also reported that use was helpful, distracting, calming and assisted in managing negative emotions and thoughts. CONCLUSIONS: The results demonstrate the potential value of sensory-based interventions in reducing behavioural and emotional dysregulation in an emergency setting whilst also promoting consumer self-management strategies.


Asunto(s)
Síntomas Afectivos/terapia , Terapias Complementarias/métodos , Servicios de Urgencia Psiquiátrica , Trastornos Mentales/terapia , Sensación , Adulto , Femenino , Hospitales de Enseñanza , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Australia del Sur , Centros de Atención Terciaria , Resultado del Tratamiento
18.
Pain Pract ; 18(4): 473-486, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-28782305

RESUMEN

OBJECTIVE: Chronic pain patients show hypersensitivity to sensory nonpainful stimuli. Sensory over-responsiveness (SOR) to innocuous daily stimuli, experienced as painful, is prevalent in 10% of the healthy population. This altered sensory processing may be an expression of overfacilitation, or a less efficient pain-inhibitory process in the pain pathways. We therefore aimed to investigate specifically the pain-inhibitory system of subjects with SOR who are otherwise healthy, not studied as of yet. METHODS: Thirty healthy subjects, divided into an SOR group (n = 14) and a non-SOR group (n = 16) based on responses to the Sensory Responsiveness Questionnaire, were psychophysically tested in order to evaluate (1) hyperalgesic responses; (2) adaptation/sensitization to 14 phasic heat stimuli; (3) habituation; (4) 6-minute after-sensations; and (5) conditioned pain modulation (CPM) (ie, phasic heat stimuli applied with and without hand immersion in a hot water bath). RESULTS: The SOR group differed from the non-SOR group in (1) a steeper escalation in NPS ratings to temperature increase (P = 0.003), indicating hyperalgesia; (2) increased sensitization (P < 0.001); (3) habituation responses (P < 0.001); (4) enhanced pain ratings during the after-sensation (P = 0.006); and (5) no group difference was found in CPM. CONCLUSIONS: SOR is associated with a pronociceptive state, expressed by amplification of experimental pain, yet with sufficient inhibitory processes. Our results support previous findings of enhanced facilitation of pain-transmitting pathways but also reveal preserved inhibitory mechanisms, although they were slower to react.


Asunto(s)
Hiperalgesia/fisiopatología , Umbral del Dolor/fisiología , Sensación/fisiología , Adulto , Dolor Crónico/fisiopatología , Femenino , Voluntarios Sanos , Calor , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor/métodos , Encuestas y Cuestionarios
19.
Neuropsychol Rehabil ; 27(6): 891-903, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26460553

RESUMEN

Aggression is common in Huntington's disease. However, at present there are no standard guidelines for managing aggression in Huntington's sufferers due to a lack of empirical research. This paper presents a case study of the treatment of very high levels of aggression with sensory modulation and behaviour support intervention in a Huntington's sufferer. The client exhibited a range of aggressive behaviours, including physical aggression to people, furniture and objects, and verbal aggression. Following an eight week baseline phase, five weeks of sensory modulation intervention were employed. A behaviour support plan was then implemented as an adjunct to the sensory intervention, with aggressive behaviour systematically audited for a further 11 weeks. The results indicate a significant reduction in reported levels of aggression during the combined sensory modulation and behaviour support phase, compared to both the baseline and the sensory modulation therapy alone phases. This case study highlights the efficacy non-pharmacological interventions may have for reducing aggression in HD.


Asunto(s)
Agresión , Terapia Conductista/métodos , Enfermedad de Huntington/psicología , Enfermedad de Huntington/terapia , Adulto , Humanos , Masculino , Proyectos de Investigación
20.
Nord J Psychiatry ; 71(7): 525-528, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28719249

RESUMEN

BACKGROUND: Clinical training in managing conflicts and preventing violence seldom contains sensory modulation (SM) as a method to de-escalate and prevent restraint and seclusion. Sensory-based interventions promote adaptive regulation of arousal and emotion. SM is a complementary approach that is associated with reduced rates of seclusion and restraint in mental healthcare, but there is need for more research in this area. AIMS: Using SM to reduce restraint and seclusion in inpatient mental health care. METHODS: The study included two similar psychiatric units where one unit implemented SM and one unit served as the control group. In the very beginning of the study, a staff-training program in the use of SM including assessment tools and intervention strategies was established. Data on restraint and forced medicine were sampled post the course of the year of implementation and compared with the control group. RESULTS: The use of belts decreased with 38% compared to the control group. The use of forced medication decreased with 46% compared to the control group. Altogether the use of physical restraint and forced medication decreased significantly with 42% (p < .05). CONCLUSIONS: Implementing a SM approach in mental healthcare facilities has a significant effect on the reduction of restraint and seclusion. As a part of the implementation, staff training and education in SM are crucial.


Asunto(s)
Terapia Conductista/métodos , Trastornos Mentales/terapia , Aislamiento de Pacientes/estadística & datos numéricos , Estimulación Física/métodos , Restricción Física/estadística & datos numéricos , Adulto , Estudios de Casos y Controles , Femenino , Hospitales Psiquiátricos/estadística & datos numéricos , Humanos , Pacientes Internos/psicología , Masculino , Trastornos Mentales/psicología , Persona de Mediana Edad , Violencia/prevención & control , Adulto Joven
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