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1.
Cereb Cortex ; 33(2): 374-384, 2022 12 20.
Artículo en Inglés | MEDLINE | ID: mdl-35332920

RESUMEN

Psychopathy and autism are both associated with aberrant social skills and empathy, yet only psychopaths are markedly antisocial and violent. Here, we compared the functional neural alterations underlying these two groups that both have aberrant empathetic abilities but distinct behavioral phenotypes. We studied 19 incarcerated male offenders with high psychopathic traits, 20 males with high-functioning autism, and 19 age-matched healthy controls. All groups underwent functional magnetic resonance imaging while they viewed dynamic happy, angry, and disgusted faces or listened to laughter and crying sounds. Psychopathy was associated with reduced somatomotor responses to almost all expressions, while participants with autism demonstrated less marked and emotion-specific alterations in the somatomotor area. These data suggest that psychopathy and autism involve both common and distinct functional alterations in the brain networks involved in the socioemotional processing. The alterations are more profound in psychopathy, possibly reflecting the more severely disturbed socioemotional brain networks in this population.


Asunto(s)
Trastorno Autístico , Humanos , Masculino , Trastorno Autístico/diagnóstico por imagen , Emociones/fisiología , Encéfalo/diagnóstico por imagen , Empatía , Mapeo Encefálico , Imagen por Resonancia Magnética
2.
Neuroimage ; 216: 116352, 2020 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-31730921

RESUMEN

Individuals with attention-deficit/hyperactivity disorder (ADHD) have difficulties navigating dynamic everyday situations that contain multiple sensory inputs that need to either be attended to or ignored. As conventional experimental tasks lack this type of everyday complexity, we administered a film-based multi-talker condition with auditory distractors in the background. ADHD-related aberrant brain responses to this naturalistic stimulus were identified using intersubject correlations (ISCs) in functional magnetic resonance imaging (fMRI) data collected from 51 adults with ADHD and 29 healthy controls. A novel permutation-based approach introducing studentized statistics and subject-wise voxel-level null-distributions revealed that several areas in cerebral attention networks and sensory cortices were desynchronized in participants with ADHD (n = 20) relative to healthy controls (n = 20). Specifically, desynchronization of the posterior parietal cortex occurred when irrelevant speech or music was presented in the background, but not when irrelevant white noise was presented, or when there were no distractors. We also show regionally distinct ISC signatures for inattention and impulsivity. Finally, post-scan recall of the film contents was associated with stronger ISCs in the default-mode network for the ADHD and in the dorsal attention network for healthy controls. The present study shows that ISCs can further our understanding of how a complex environment influences brain states in ADHD.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/diagnóstico por imagen , Atención , Percepción Auditiva , Encéfalo/diagnóstico por imagen , Películas Cinematográficas , Percepción Visual , Estimulación Acústica/métodos , Adulto , Atención/fisiología , Trastorno por Déficit de Atención con Hiperactividad/psicología , Percepción Auditiva/fisiología , Encéfalo/fisiología , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Estimulación Luminosa/métodos , Percepción Visual/fisiología
3.
Hum Brain Mapp ; 41(17): 4876-4891, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32813290

RESUMEN

The development of treatments for attention impairments is hampered by limited knowledge about the malleability of underlying neural functions. We conducted the first randomized controlled trial to determine the modulations of brain activity associated with working memory (WM) training in adults with attention-deficit hyperactivity disorder (ADHD). At baseline, we assessed the aberrant functional brain activity in the n-back WM task by comparing 44 adults with ADHD with 18 healthy controls using fMRI. Participants with ADHD were then randomized to train on an adaptive dual n-back task or an active control task. We tested whether WM training elicits redistribution of brain activity as observed in healthy controls, and whether it might further restore aberrant activity related to ADHD. As expected, activity in areas of the default-mode (DMN), salience (SN), sensory-motor (SMN), frontoparietal (FPN), and subcortical (SCN) networks was decreased in participants with ADHD at pretest as compared with healthy controls, especially when the cognitive load was high. WM training modulated widespread FPN and SN areas, restoring some of the aberrant activity. Training effects were mainly observed as decreased brain activity during the trained task and increased activity during the untrained task, suggesting different neural mechanisms for trained and transfer tasks.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Trastorno por Déficit de Atención con Hiperactividad/rehabilitación , Corteza Cerebral/fisiopatología , Remediación Cognitiva , Red en Modo Predeterminado/fisiopatología , Función Ejecutiva/fisiología , Memoria a Corto Plazo/fisiología , Red Nerviosa/fisiopatología , Desempeño Psicomotor/fisiología , Adulto , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico por imagen , Cerebelo/diagnóstico por imagen , Cerebelo/fisiopatología , Corteza Cerebral/diagnóstico por imagen , Red en Modo Predeterminado/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética , Masculino , Red Nerviosa/diagnóstico por imagen , Evaluación de Resultado en la Atención de Salud , Adulto Joven
4.
Hum Brain Mapp ; 37(3): 1066-79, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26686668

RESUMEN

Previous functional connectivity studies have found both hypo- and hyper-connectivity in brains of individuals having autism spectrum disorder (ASD). Here we studied abnormalities in functional brain subnetworks in high-functioning individuals with ASD during free viewing of a movie containing social cues and interactions. Twenty-six subjects (13 with ASD) watched a 68-min movie during functional magnetic resonance imaging. For each subject, we computed Pearson's correlation between haemodynamic time-courses of each pair of 6-mm isotropic voxels. From the whole-brain functional networks, we derived individual and group-level subnetworks using graph theory. Scaled inclusivity was then calculated between all subject pairs to estimate intersubject similarity of connectivity structure of each subnetwork. Additional 54 individuals (27 with ASD) from the ABIDE resting-state database were included to test the reproducibility of the results. Between-group differences were observed in the composition of default-mode and ventro-temporal-limbic (VTL) subnetworks. The VTL subnetwork included amygdala, striatum, thalamus, parahippocampal, fusiform, and inferior temporal gyri. Further, VTL subnetwork similarity between subject pairs correlated significantly with similarity of symptom gravity measured with autism quotient. This correlation was observed also within the controls, and in the reproducibility dataset with ADI-R and ADOS scores. Our results highlight how the reorganization of functional subnetworks in individuals with ASD clarifies the mixture of hypo- and hyper-connectivity findings. Importantly, only the functional organization of the VTL subnetwork emerges as a marker of inter-individual similarities that co-vary with behavioral measures across all participants. These findings suggest a pivotal role of ventro-temporal and limbic systems in autism.


Asunto(s)
Trastorno Autístico/fisiopatología , Encéfalo/fisiopatología , Adulto , Mapeo Encefálico , Bases de Datos Factuales , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Percepción de Movimiento/fisiología , Vías Nerviosas/fisiopatología , Plasticidad Neuronal , Estimulación Luminosa , Reproducibilidad de los Resultados , Descanso , Índice de Severidad de la Enfermedad , Adulto Joven
5.
Duodecim ; 132(10): 982-5, 2016.
Artículo en Fi | MEDLINE | ID: mdl-27382835

RESUMEN

Treatment paths in psychiatry may extend from infancy to old age, particularly in neuropsychiatric patients. In the diagnostics and treatment it is important to consider the variations in the symptoms and focuses of rehabilitation during the different periods of the life cycle. Good care and its provision require a perspective extending through the lifespan and assurance of continuity. In our case report we describe a treatment path of 20 years' duration of our neuropsychiatric patient


Asunto(s)
Continuidad de la Atención al Paciente , Trastornos Mentales/terapia , Neuropsicología , Humanos , Acontecimientos que Cambian la Vida , Factores de Tiempo
6.
Eur Child Adolesc Psychiatry ; 22(4): 217-23, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23065028

RESUMEN

Asperger's syndrome (AS), a pervasive developmental disorder (PDD), has nowadays been widely advocated in media. Therefore, psychiatrists treating adolescents frequently meet patients as well as their families reporting of symptoms resembling those of Asperger's syndrome. It is known that symptoms of Asperger's syndrome have some overlap with those of schizophrenia, but less is known about comorbidity between these two syndromes. We describe a sample of 18 adolescents with early onset schizophrenia. Diagnosis of schizophrenia was based on assessment with Kiddie Schedule for Affective Disorders and Schizophrenia. The diagnostic interview for Social and Communication Disorders version 11 was used to assess autism spectrum disorders. Ten adolescents fulfilled symptom criteria of Asperger's syndrome after the onset of schizophrenia, while only two persons had Asperger's syndrome before the onset of schizophrenia, a prerequisite for diagnosis. 44% of the adolescents fulfilled the diagnosis of some PDD in childhood. Most of them were, however, unrecognized before the onset of schizophrenia. On the other hand, all 18 patients had one or more symptoms of PDDS in adolescence. Adolescents with schizophrenia have often symptoms consistent with AS, although only few of them have fulfilled the diagnostic criteria in their childhood, a prerequisite for the diagnosis of AS. There is a risk for misdiagnosis of adolescents with autistic symptoms if detailed longitudinal anamnesis is not obtained.


Asunto(s)
Síndrome de Asperger/complicaciones , Síndrome de Asperger/diagnóstico , Esquizofrenia/complicaciones , Esquizofrenia/diagnóstico , Adolescente , Antipsicóticos/uso terapéutico , Diagnóstico Diferencial , Femenino , Humanos , Masculino , Escalas de Valoración Psiquiátrica , Reproducibilidad de los Resultados , Esquizofrenia/tratamiento farmacológico
7.
Netw Neurosci ; 7(4): 1302-1325, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38144696

RESUMEN

Current knowledge of white matter changes in large-scale brain networks in adult attention-deficit/hyperactivity disorder (ADHD) is scarce. We collected diffusion-weighted magnetic resonance imaging data in 40 adults with ADHD and 36 neurotypical controls and used constrained spherical deconvolution-based tractography to reconstruct whole-brain structural connectivity networks. We used network-based statistic (NBS) and graph theoretical analysis to investigate differences in these networks between the ADHD and control groups, as well as associations between structural connectivity and ADHD symptoms assessed with the Adult ADHD Self-Report Scale or performance in the Conners Continuous Performance Test 2 (CPT-2). NBS revealed decreased connectivity in the ADHD group compared to the neurotypical controls in widespread unilateral networks, which included subcortical and corticocortical structures and encompassed dorsal and ventral attention networks and visual and somatomotor systems. Furthermore, hypoconnectivity in a predominantly left-frontal network was associated with higher amount of commission errors in CPT-2. Graph theoretical analysis did not reveal topological differences between the groups or associations between topological properties and ADHD symptoms or task performance. Our results suggest that abnormal structural wiring of the brain in adult ADHD is manifested as widespread intrahemispheric hypoconnectivity in networks previously associated with ADHD in functional neuroimaging studies.

8.
Exp Brain Res ; 223(1): 19-32, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22948736

RESUMEN

In this study of the project DyAdd (Adult Dyslexia and Attention Deficit Disorder in Finland), classical eyeblink conditioning (EBC) was investigated in both delay and trace paradigms in adults (18-55 years) with dyslexia (n = 37), attention deficit-hyperactivity disorder (ADHD; n = 21), their comorbid combination (n = 8), and healthy controls (n = 35). In addition, the profiles of three participants with a rare autosomal dominant cerebellar disease were assessed (episodic ataxia type 2, EA-2). We found that participants with dyslexia were overall slower learners than controls in eyeblink conditioning. Further, they were the only group that had a reduced number of CRs in mediotemporal-dependent trace paradigm compared to the more cerebellum-dependent delay paradigm. Second, ADHD was found to be related to larger CR amplitude. Third, those with a comorbid condition learned faster and manifested CRs that were not well timed. Fourth, the cerebellar patients showed nearly no conditioning at all. Correlations between EBC and various neuropsychological domains (phonological processing, reading, spelling, arithmetic, executive functions, attention, and fine motor control) over all participants resulted in significant relations only for the delay paradigm: Increased amount of reading errors related with later peak latency and increased amount of self-corrections in fine motor control related with larger response magnitude. Within those who conditioned, relations emerged only for the trace paradigm: better spelling was related to larger response magnitude. These results do not lend support to the cerebellar hypothesis of dyslexia. On the contrary, dyslexia in its pure form seems to be related to a relative dysfunction of a larger hippocampal-cerebellar network. Further, larger responses in the ADHD group are suggested to result from their lowered responding threshold.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/psicología , Condicionamiento Palpebral/fisiología , Dislexia/psicología , Adolescente , Adulto , Atención/fisiología , Cognición/fisiología , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Escolaridad , Electromiografía , Función Ejecutiva , Femenino , Lateralidad Funcional , Humanos , Inteligencia , Pruebas de Inteligencia , Masculino , Persona de Mediana Edad , Destreza Motora , Pruebas Neuropsicológicas , Factores Sexuales , Ataxias Espinocerebelosas/fisiopatología , Ataxias Espinocerebelosas/psicología , Adulto Joven
9.
Brain Cogn ; 80(3): 311-27, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23043869

RESUMEN

In this study of the project DyAdd, three aspects of visual attention were investigated in adults (18-55years) with dyslexia (n=35) or attention deficit/hyperactivity disorder (ADHD, n=22), and in healthy controls (n=35). Temporal characteristics of visual attention were assessed with Attentional Blink (AB), capacity of visual attention with Multiple Object Tracking (MOT), and spatial aspects of visual attention with Useful Field of View (UFOV) task. Results showed that adults with dyslexia had difficulties performing the AB and UFOV tasks, which were explained by an impaired ability to process dual targets, longer AB recovery time, and deficits in processing rapidly changing visual displays. The ADHD group did not have difficulties in any of the tasks. Further, performance in the visual attention tasks predicted variation in measures of phonological processing and reading when all of the participants were considered together. Thus, difficulties in tasks of visual attention were related to dyslexia and variation of visual attention had a role in the reading ability of the general population.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Atención/fisiología , Dislexia/fisiopatología , Tiempo de Reacción/fisiología , Percepción Visual/fisiología , Adolescente , Adulto , Análisis de Varianza , Parpadeo Atencional/fisiología , Estudios de Casos y Controles , Aprendizaje Discriminativo/fisiología , Femenino , Área de Dependencia-Independencia , Humanos , Masculino , Procesos Mentales/fisiología , Persona de Mediana Edad , Percepción de Movimiento/fisiología , Pruebas Neuropsicológicas , Valores de Referencia , Percepción Espacial/fisiología , Campos Visuales/fisiología , Adulto Joven
10.
Neuroimage Clin ; 35: 103116, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35872437

RESUMEN

The goal of this study was to elucidate the anatomical brain basis of social cognition through two disorders with distinctively different phenotypes of social interaction. We compared structural MR images of 20 individuals with autism spectrum disorder (ASD), 19 violent offenders with high psychopathic traits, and 19 control participants using voxel-based morphometry (VBM). Our earlier study showed lower grey matter volume (GMV) values in the insula, frontal cortex, and sensorimotor cortex of the offender group compared to controls. In the present study, the images of the ASD group revealed lower GMV in the left precuneus, right cerebellum, and right precentral gyrus in comparison with controls. The comparison between the offender and ASD groups showed lower GMV values for the right temporal pole and left inferior frontal gyrus in the offender group. There was also an overlap of both disorders in the right pre-central cortex, showing lower GMV compared to controls. Our findings suggest structural differences between violent offenders with high psychopathy traits and ASD individuals in the frontotemporal social brain network areas, previously associated with empathy. We also provide evidence of similar abnormal structures in the motor cortex for both of these disorders, possibly related to uniting issues of social cognition.


Asunto(s)
Trastorno del Espectro Autista , Trastorno Autístico , Criminales , Trastorno del Espectro Autista/diagnóstico por imagen , Encéfalo/diagnóstico por imagen , Sustancia Gris/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética
11.
J Autism Dev Disord ; 52(4): 1623-1639, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33966137

RESUMEN

The Autism Spectrum Disorders in the European Union (ASDEU) survey investigated local services' use experiences of autistic adults, carers and professionals with interventions for autistic adults. The majority of the 697 participants experienced recommended considerations prior to deciding on intervention and during the intervention plan and implementation. Psychosocial interventions were the most commonly experienced interventions, while pharmacological interventions NOT recommended for core autistic symptoms were reported by fairly large proportions of participants. Family interventions were experienced slightly more commonly by carers than adults or professionals. Less than the 26% of autistic adult responders who had experienced challenging behaviors reported receiving an intervention to change them. These results provide insights for improving gaps in service provision of interventions among autistic adults.


Asunto(s)
Trastorno del Espectro Autista , Trastorno Autístico , Adulto , Trastorno del Espectro Autista/psicología , Trastorno del Espectro Autista/terapia , Trastorno Autístico/psicología , Cuidadores , Unión Europea , Humanos , Encuestas y Cuestionarios
12.
Front Psychiatry ; 13: 919234, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35757227

RESUMEN

There is very little knowledge regarding autistic adult services, practices, and delivery. The study objective was to improve understanding of current services and practices for autistic adults and opportunities for improvement as part of the Autism Spectrum Disorder in the European Union (ASDEU) project. Separate survey versions were created for autistic adults, carers of autistic adults, and professionals in adult services. 2,009 persons responded to the survey and 1,085 (54%) of them completed at least one of the services sections: 469 autistic adults (65% female; 55% <35 years old), 441 carers of autistic adults (27% female; 6% <35 years old), 175 professionals in adult services (76% female; 67% in non-medical services). Top choices by autistic adults, carers or professionals for services best suiting their current needs were: residential services: "help in own home" (adults, carers of high independent adults, professionals), "fulltime residential facility" (carers of low independent adults); employment services: "job mentors" (adults, carers of high independent adults, professionals), "Sheltered employment" (carers of low independent adults); education services: "support in regular education setting" (all groups); financial services: financial support in lieu of employment ("Supplementary income for persons unable to have full employment" for adults, "full pension" for carers of low independent adults) or to supplement employment earnings for carers of high independent adults and professionals; social services: "behavior training" (adults) and "life skills training" (carers and professionals). Waiting times for specific services were generally < 1 month or 1-3 months, except for residential services which could be up to 6 months; most professionals were uninformed of waiting times (>50% responded "don't know"). Five of seven residential services features recommended for autistic adults were experienced by <50% of adults. The knowledge of good local services models that work well for autistic adults was generally low across all services areas. The variation in services experiences and perceptions reported by autistic adults, carers, or professionals underscore the need to query all groups for a complete picture of community services availability and needs. The results showed areas for potential improvement in autistic adult services delivery in the EU to achieve recommended standards.

13.
Duodecim ; 127(15): 1571-7, 2011.
Artículo en Fi | MEDLINE | ID: mdl-21995127

RESUMEN

Literature on Asperger's syndrome (AS) has mainly described symptoms that are manifested in boys. Only recently, attention has been paid on the features in AS girls that differ from the typical clinical picture and may complicate the detection of the syndrome. Because AS girls may react passively in general or compensate or hide their difficulties by other abilities, the need for support is not necessarily brought up. In that case this developmental disorder easily remains unrecognized. Recognition of the syndrome at an early stage makes early supportive actions possible.


Asunto(s)
Síndrome de Asperger/diagnóstico , Femenino , Humanos
14.
Front Psychiatry ; 12: 614102, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34122158

RESUMEN

The Autism Spectrum Disorders in the European Union (ASDEU) survey investigated the knowledge and health service experiences of users and providers to generate new hypotheses and scientific investigations that would contribute to improvement in health care for autistic adults. An online survey designed for autistic adults, carers of autistic adults, and professionals in adult services was translated into 11 languages and distributed electronically by organizations and in-country adult service facilities in 2017; 522 autistic adults, 442 carers, and 113 professionals provided answers to the health questions. Professionals, the majority in non-medical services, appeared to be poorly informed about whether certain co-occurring conditions were more frequent in autistic adults than typical adults-especially some medical conditions, suicide attempts, accidents, and pain. A minority of autistic adults reported preventive health behaviors such as routine health check-ups. The majority of users and providers expressed the desire to make health care services more user-friendly for autistic adults. Among the three groups, <20% of responders knew an organization or clinician which has developed a way to monitor health, and prevent poor health, that works well for adults on the autism spectrum. The results point to means for better management of co-occurring conditions associated with autism in adulthood in order to reduce hospital admissions and potential areas of improvement in health and social services for autistic adults. Specifically, efforts should be focused on (1) professionals' education on risks for co-occurring conditions in autistic adults; (2) promoting preventive health behaviors; (3) making services user-friendly for autistic adults and their families; and (4) encouraging knowledge of good local services.

15.
J Autism Dev Disord ; 51(11): 4129-4146, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33502713

RESUMEN

Research providing an evidence-base for autistic adult services is sparse. The Autism Spectrum Disorders in the European Union (ASDEU) network implemented an on-line survey to determine gaps in autistic adult diagnostic evaluation and post-diagnostic support services. More than 55% in all groups experienced most of the recommended features for diagnostic evaluation for autistic adults. In contrast, < 2% of adults or carers, and < 21% of professionals experienced each of the recommended features for post-diagnostic support. In contrast to 61% of professionals, only about 30% of autistic adults and carers had knowledge of good local services models for autism diagnosis in adulthood. There are major differences between good practice guidelines for diagnostic and post-diagnostic care for autistic adults, and what is actually experienced by services users and professionals.


Asunto(s)
Trastorno del Espectro Autista , Trastorno Autístico , Adulto , Trastorno del Espectro Autista/diagnóstico , Trastorno Autístico/diagnóstico , Servicios de Diagnóstico , Unión Europea , Humanos , Encuestas y Cuestionarios
16.
Front Hum Neurosci ; 14: 316, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32922276

RESUMEN

Two themes have puzzled the research on developmental and learning disorders for decades. First, some of the risk and protective factors behind developmental challenges are suggested to be shared and some are suggested to be specific for a given condition. Second, language-based learning difficulties like dyslexia are suggested to result from or correlate with non-linguistic aspects of information processing as well. In the current study, we investigated how adults with developmental dyslexia or ADHD as well as healthy controls cluster across various dimensions designed to tap the prominent non-linguistic theories of dyslexia. Participants were 18-55-year-old adults with dyslexia (n = 36), ADHD (n = 22), and controls (n = 35). Non-linguistic theories investigated with experimental designs included temporal processing impairment, abnormal cerebellar functioning, procedural learning difficulties, as well as visual processing and attention deficits. Latent profile analysis (LPA) was used to investigate the emerging groups and patterns of results across these experimental designs. LPA suggested three groups: (1) a large group with average performance in the experimental designs, (2) participants predominantly from the clinical groups but with enhanced conditioning learning, and (3) participants predominantly from the dyslexia group with temporal processing as well as visual processing and attention deficits. Despite the presence of these distinct patterns, participants did not cluster very well based on their original status, nor did the LPA groups differ in their dyslexia or ADHD-related neuropsychological profiles. Remarkably, the LPA groups did differ in their intelligence. These results highlight the continuous and overlapping nature of the observed difficulties and support the multiple deficit model of developmental disorders, which suggests shared risk factors for developmental challenges. It also appears that some of the risk factors suggested by the prominent non-linguistic theories of dyslexia relate to the general level of functioning in tests of intelligence.

17.
PLoS One ; 14(9): e0222084, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31532809

RESUMEN

We examined the emotional and psychophysiological underpinnings of social interaction in the context of autism spectrum disorder, more specifically, involving participants diagnosed with Asperger syndrome (AS). We recorded participants' autonomic nervous system (ANS) activation (electrodermal activity, heart rate, and heart rate variability) and facial muscle activation during conversations in two different types of male dyads: (1) ten dyads where one participant has been diagnosed with AS (AS/NT dyads) and (2) nine dyads where both participants are neurotypical (NT/NT dyads). Afterwards, three independent raters assessed continuously each participant's affiliative and dominant behaviors during the first and last 10 minutes of the conversations. The relationship between the assessed data and ANS responses was examined. We found that, in the NT/NT dyads, a high level of affiliation displayed by the conversational partner calms down the participant when they are actively dominating the interaction. In contrast, when the participants themselves expressed affiliation, their psychophysiological responses indicated increase in arousal, which suggests that the giving of affiliation is physiologically "hard work." The affiliation-related ANS responses were similar in those NT participants whose conversational partner had AS, while some differences in facial muscle activation did occur in comparison to NT/NT dyads. In the AS participants, in contrast, a high level of affiliation provided by the conversational partner was associated with increase in arousal, suggesting heightened alertness and stress. As for their own affiliative behavior, the AS participants exhibited similar indicators of alertness and stress as the NT participants, but only when their own level of dominance was low. Our results increase understanding of how individuals with AS experience social interaction at the physiological level, and how this experience differs from that in NT individuals. Moreover, our results confirm and further specify our earlier results, where we proposed that affiliation involves the type of "sharing of the burden" that also reverberates in the participants' bodies.


Asunto(s)
Síndrome de Asperger/psicología , Sistema Nervioso Autónomo/fisiopatología , Músculos Faciales/fisiopatología , Adulto , Síndrome de Asperger/fisiopatología , Estudios de Casos y Controles , Femenino , Finlandia , Humanos , Relaciones Interpersonales , Masculino , Grabación en Video , Adulto Joven
18.
Psychiatry Res ; 159(3): 339-45, 2008 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-18462804

RESUMEN

The aim of the present study was to characterize sleep in conduct-disordered adolescents using polysomnography and spectral power analysis. The two hypotheses were that conduct disorder would be associated with objective sleep problems, and that conduct disorder--as a precursor of adult antisocial personality disorder--would be associated with the same kind of abnormal sleep architecture, with both increased deep sleep and delta power, as previously reported in antisocial personality disorder. The patients consisted of 15 adolescents (age range 13-17 years, mean age 14.7 years) with histories of antisocial behavior so functionally impairing that they were ordered by child welfare to undergo a psychosocial evaluation in a closed social services ward. The healthy age-matched controls comprised 20 volunteers recruited with a newspaper advertisement. Opposite to earlier subjective sleep studies among conduct-disordered children, no significant differences in sleep parameters were observed between the two groups. The adolescents with conduct disorder slept a little bit longer, but the percentage amount of different sleep stages did not differ significantly between the two groups. Relative spectral power of sleep, delta power in particular, was similar in both groups, assessed in total sleep time as well as in first half of it. Different alternative explanations for these findings are discussed.


Asunto(s)
Trastorno de la Conducta/diagnóstico , Electroencefalografía/estadística & datos numéricos , Polisomnografía/estadística & datos numéricos , Fases del Sueño/fisiología , Trastornos del Sueño-Vigilia/diagnóstico , Adolescente , Adulto , Factores de Edad , Trastorno de Personalidad Antisocial/diagnóstico , Comorbilidad , Trastorno de la Conducta/epidemiología , Grupos Control , Ritmo Delta/estadística & datos numéricos , Femenino , Análisis de Fourier , Humanos , Masculino , Psicología del Adolescente , Trastornos del Sueño-Vigilia/epidemiología , Sueño REM/fisiología
19.
Brain Res ; 1692: 12-22, 2018 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-29702087

RESUMEN

Modern environments are full of information, and place high demands on the attention control mechanisms that allow the selection of information from one (focused attention) or multiple (divided attention) sources, react to changes in a given situation (stimulus-driven attention), and allocate effort according to demands (task-positive and task-negative activity). We aimed to reveal how attention deficit hyperactivity disorder (ADHD) affects the brain functions associated with these attention control processes in constantly demanding tasks. Sixteen adults with ADHD and 17 controls performed adaptive visual and auditory discrimination tasks during functional magnetic resonance imaging (fMRI). Overlapping brain activity in frontoparietal saliency and default-mode networks, as well as in the somato-motor, cerebellar, and striatal areas were observed in all participants. In the ADHD participants, we observed exclusive activity enhancement in the brain areas typically considered to be primarily involved in other attention control functions: During auditory-focused attention, we observed higher activation in the sensory cortical areas of irrelevant modality and the default-mode network (DMN). DMN activity also increased during divided attention in the ADHD group, in turn decreasing during a simple button-press task. Adding irrelevant stimulation resulted in enhanced activity in the salience network. Finally, the irrelevant distractors that capture attention in a stimulus-driven manner activated dorsal attention networks and the cerebellum. Our findings suggest that attention control deficits involve the activation of irrelevant sensory modality, problems in regulating the level of attention on demand, and may encumber top-down processing in cases of irrelevant information.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/patología , Atención/fisiología , Mapeo Encefálico , Encéfalo/fisiopatología , Vías Nerviosas/fisiopatología , Estimulación Acústica , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico por imagen , Encéfalo/diagnóstico por imagen , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Imagen por Resonancia Magnética , Masculino , Vías Nerviosas/diagnóstico por imagen , Oxígeno/sangre , Estimulación Luminosa , Desempeño Psicomotor , Tiempo de Reacción/fisiología
20.
Psychiatry Res ; 145(1): 67-73, 2006 Nov 29.
Artículo en Inglés | MEDLINE | ID: mdl-17070601

RESUMEN

The aim of the present study was to characterize sleep in severely violent women with antisocial personality disorder (ASP) as the primary diagnosis. Participants for this preliminary study were three drug-free female offenders ordered to undergo a forensic mental examination in a maximum security state mental hospital after committing homicide or attempted homicide. Ten healthy age- and gender-matched controls consisted of hospital staff with no history of physical violence. The most striking finding was the increased amount of slow wave sleep, particularly the deepest sleep stage, S4, in women with ASP. This finding is in agreement with previously reported results in habitually violent male criminals with ASP. Severe female aggression seems to be associated with profound changes in sleep architecture. Whether this reflects specific brain pathology, or a delay in the normal development of sleep patterns in the course of aging, needs to be clarified. From the perspective of sleep research, the biological correlates of severe impulsive violence seem to be similar in both sexes.


Asunto(s)
Trastorno de Personalidad Antisocial/fisiopatología , Electroencefalografía , Homicidio/psicología , Polisomnografía , Sueño REM/fisiología , Sueño/fisiología , Violencia/psicología , Adulto , Agresión/fisiología , Trastorno de Personalidad Antisocial/diagnóstico , Trastorno de Personalidad Antisocial/psicología , Encéfalo/fisiopatología , Femenino , Humanos , Valores de Referencia , Factores Sexuales
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