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1.
Eur Addict Res ; 26(2): 103-108, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31940647

RESUMEN

AIMS: Childhood trauma is of importance for the manifestation of substance-related disorders and maintenance of hypothalamic-pituitary-adrenal (HPA)-axis disorders. Since stress plays a crucial role in opioid compliance and craving, we investigated the immediate effects of diacetylmorphine application on the HPA axis. In particular, adrenocorticotropic hormone (ACTH) and cortisol secretion, as well as satiety regulating proopiomelanocortin peptides α-melanocyte-stimulating hormone (MSH) and ß-endorphin (END) in a cohort of opioid-dependent patients in diamorphine maintenance treatment concerning the clinical severity of their childhood trauma. METHODS: We compared the serum levels of ACTH, cortisol, MSH, and END in 15 opioid-dependent patients. All participants received treatment with diamorphine and were observed at 5 timepoints before and after injection. We split the cohort into 2 subgroups concerning childhood trauma measured by the Childhood Trauma Questionnaire. RESULTS: Splitting in 2 subgroups for mild (5) and severe trauma (10), we found that while both groups show a significant reduction of ACTH and cortisol levels over time, slopes display different progressions over time for cortisol (F[1.6] = 9.38, p = 0.02), while remaining identical for ACTH (F[1.6] = 1.69, p = 0.24). Also, levels of both MSH and END were significantly lower in severely traumatized patients. CONCLUSIONS: For the first time, we present a detailed representation of stress- and addiction-related proteins for the first 5 h after diamorphine application, demonstrating the interrelationship between stress hormones and childhood trauma as well as its potential effects on the progression of addictions such as opioid dependence.


Asunto(s)
Experiencias Adversas de la Infancia , Dependencia de Heroína , Heroína , Estrés Psicológico/psicología , Heridas y Lesiones/psicología , Hormona Adrenocorticotrópica/sangre , Adulto , Niño , Estudios de Cohortes , Femenino , Heroína/farmacología , Heroína/uso terapéutico , Dependencia de Heroína/tratamiento farmacológico , Dependencia de Heroína/metabolismo , Humanos , Hidrocortisona/sangre , Sistema Hipotálamo-Hipofisario/efectos de los fármacos , Sistema Hipotálamo-Hipofisario/metabolismo , Masculino , Persona de Mediana Edad , Sistema Hipófiso-Suprarrenal/efectos de los fármacos , Sistema Hipófiso-Suprarrenal/metabolismo , Encuestas y Cuestionarios/estadística & datos numéricos , betaendorfina/sangre
2.
Cogn Neuropsychiatry ; 22(2): 145-158, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-28253091

RESUMEN

INTRODUCTION: In the present study we were interested in the processing of audio-visual integration in schizophrenia compared to healthy controls. The amount of sound-induced double-flash illusions served as an indicator of audio-visual integration. We expected an altered integration as well as a different window of temporal integration for patients. METHODS: Fifteen schizophrenia patients and 15 healthy volunteers matched for age and gender were included in this study. We used stimuli with eight different temporal delays (stimulus onset asynchronys (SOAs) 25, 50, 75, 100, 125, 150, 200 and 300 ms) to induce a double-flash illusion. Group differences and the widths of temporal integration windows were calculated on percentages of reported double-flash illusions. RESULTS: Patients showed significantly more illusions (ca. 36-44% vs. 9-16% in control subjects) for SOAs 150-300. The temporal integration window for control participants went from SOAs 25 to 200 whereas for patients integration was found across all included temporal delays. We found no significant relationship between the amount of illusions and either illness severity, chlorpromazine equivalent doses or duration of illness in patients. CONCLUSIONS: Our results are interpreted in favour of an enlarged temporal integration window for audio-visual stimuli in schizophrenia patients, which is consistent with previous research.


Asunto(s)
Percepción Auditiva , Ilusiones , Esquizofrenia/fisiopatología , Percepción Visual , Estimulación Acústica/métodos , Adulto , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Estimulación Luminosa/métodos
3.
Fortschr Neurol Psychiatr ; 84(3): 164-76; quiz 177-8, 2016 Mar.
Artículo en Alemán | MEDLINE | ID: mdl-27029045

RESUMEN

After a long lead time the substitution with diamorphine was taken into the German catalogue of statutory health insurance in 2010. Currently about 570 patients are treated this way in 9 ambulances in Germany. The study phase as well as the clinical practice are showing the success of this therapy concerning physical and mental health of patients and their circumstances of social life. Thereby substitution with diamorphine is underlying very strict admission criteria regarding patients on the one hand and particular organizational requirements of the medical institution on the other hand. This article explains these criteria in detail as well as neurobiological information and clinical workflow is presented. Improvement of mandatory requirements could lead to a better reaching of patients who benefit from substitution with diamorphine.


Asunto(s)
Heroína/uso terapéutico , Narcóticos/uso terapéutico , Tratamiento de Sustitución de Opiáceos/métodos , Trastornos Relacionados con Opioides/tratamiento farmacológico , Alemania/epidemiología , Dependencia de Heroína/tratamiento farmacológico , Dependencia de Heroína/epidemiología , Humanos , Tratamiento de Sustitución de Opiáceos/estadística & datos numéricos , Trastornos Relacionados con Opioides/epidemiología
4.
Psychiatr Danub ; 27(1): 50-9, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25751431

RESUMEN

BACKGROUND: Over the past few years, our knowledge about Asperger syndrome (AS) has increased enormously. Although it used to be a syndrome mainly encountered in childhood and adolescent psychiatry, it is now increasingly recognized in adult psychiatry. Nevertheless, little is known about psychiatric comorbidities and life course of adults with AS. The current study aimed to gain an insight into comorbidities and the development of the social situation of adults with AS. SUBJECTS AND METHODS: We investigated psychiatric comorbidities, psychiatric history, professional background, partnerships, and children in 50 adults with AS (34 men and 16 women) over a broad age range (20-62 years). RESULTS: Seventy percent of adults with AS had at least one psychiatric comorbiditiy. Most frequent comorbidities were depression and anxiety disorders. Obsessive-compulsive disorder and alcohol abuse/dependence were also observed. Many adults had previously been treated with psychopharmacological or psychotherapeutic interventions. Although most adults had a high-level school leaving certificate and had gone on to complete training/university studies, less than half were currently in employment. Fourteen adults were living in a partnership and 10 had children. CONCLUSIONS: Adults with AS often have psychiatric comorbidities, indicating lower levels of mental health. Additionally, they seem to have severe limitations concerning professional success, despite having a good school education. Their family situation is also impaired with regard to starting a family. These considerable limitations in the life of adults with AS may help to understand their specific problems, and emphasize the importance of developing specific treatments for improving their mental health and social integration.


Asunto(s)
Trastornos de Ansiedad/epidemiología , Síndrome de Asperger , Trastorno Depresivo/epidemiología , Psicoterapia/métodos , Psicotrópicos/uso terapéutico , Trastornos Relacionados con Sustancias/epidemiología , Adulto , Síndrome de Asperger/diagnóstico , Síndrome de Asperger/epidemiología , Síndrome de Asperger/psicología , Síndrome de Asperger/terapia , Comorbilidad , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Salud de la Familia , Femenino , Alemania/epidemiología , Humanos , Masculino , Salud Mental , Persona de Mediana Edad , Evaluación de Necesidades , Clase Social
5.
Psychiatr Danub ; 25(2): 133-41, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23793277

RESUMEN

BACKGROUND: Because adult ADHD is often accompanied by psychiatric comorbidities, the diagnostic process should include a thorough investigation for comorbid disorders. Asperger-Syndrome is rarely reported in adult ADHD and commonly little attention is paid to this possible comorbidity. SUBJECTS AND METHODS: We investigated 53 adult ADHD-patients which visited our out patient clinic for first ADHD-diagnosis (17 females, 36 males; range of age: 18-56 years) for the frequency of a comorbid Asperger-Syndrome. Diagnosis of this autism-spectrum disorder was confirmed by applying the appropriate DSM-IV-criteria. Additionally we tested the power of the two screening-instruments "Autism-spectrum quotient" (AQ) and "Empathy quotient" (EQ) by Baron-Cohen for screening Asperger-Syndrome in adult ADHD. RESULTS: Eight ADHD-patients were diagnosed with a comorbid Asperger-Syndrome (15.1%). The difference in AQ- and EQ-scores between pure ADHD-patients and comorbid patients was analysed, showing significantly higher scores in AQ and significant lower scores in EQ in comorbid patients. CONCLUSIONS: Results show that the frequency of Asperger-Syndrome seems to be substantially increased in adult ADHD (versus the prevalence of 0.06% in the general population), indicating that investigators of adult ADHD should also be attentive to autism-spectrum disorders. Especially the AQ seems to be a potential screening instrument for Asperger-Syndrome in adult ADHD-patients.


Asunto(s)
Síndrome de Asperger/epidemiología , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Escalas de Valoración Psiquiátrica/normas , Adolescente , Adulto , Síndrome de Asperger/diagnóstico , Niño , Comorbilidad , Empatía/fisiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
6.
Dtsch Arztebl Int ; 120(6): 87-93, 2023 02 10.
Artículo en Inglés | MEDLINE | ID: mdl-36507695

RESUMEN

BACKGROUND: The negative effect of autism spectrum disorders (ASD) persists into adulthood, with impacts on social interactions and occupational development. This article reviews the current status of clinical aspects of ASD in adulthood on the basis of ICD-11. METHODS: A selective search of PubMed and other relevant publications on ASD focused on changes in ICD-11 and on prevalence, symptoms, diagnosis, treatment, and prognosis. RESULTS: The global lifetime prevalence of ASD is around 1%. A number of recent studies have concentrated on behaviors termed "camouflaging" (disguising symptoms typical of autism) and "stimming" (use of repetitive self-stimulation), which affect the mental health of those concerned. Standardized diagnostic instruments are available, but the data on validity in adulthood and on applicability are limited. Gestures, eye contact, facial expressions, social closeness, and reciprocity play particularly important roles in diagnosis. German-language treatment manuals lack randomized controlled studies: a validated treatment strategy is currently available only in English. Investigation of the prognosis showed limitation of occupational perspectives (54% unemployment in the study sample) and 2.9 times higher mortality compared to the general population. CONCLUSION: Individual treatment goals should be set, taking account of any coexisting psychiatric disorders. The process of diagnosis remains clinical, using standardized instruments. Further improvement of diagnostic and therapeutic instruments for adult ASD is desirable.


Asunto(s)
Trastorno del Espectro Autista , Adulto , Humanos , Trastorno del Espectro Autista/diagnóstico , Trastorno del Espectro Autista/epidemiología , Trastorno del Espectro Autista/terapia , Pronóstico , Clasificación Internacional de Enfermedades , Prevalencia
7.
Front Psychiatry ; 14: 1180827, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37599885

RESUMEN

Introduction: Little is known about cognitive control in adults with high-functioning forms of autism spectrum disorder because previous research focused on children and adolescents. Cognitive control is crucial to monitor and readjust behavior after errors to select contextually appropriate reactions. The congruency effect and conflict adaptation are measures of cognitive control. Post-error slowing, error-related negativity and error positivity provide insight into behavioral and electrophysiological correlates of error processing. In children and adolescent with autism spectrum disorder deficits in cognitive control and error processing have been shown by changes in post-error slowing, error-related negativity and error positivity in the flanker task. Methods: We performed a modified Eriksen flanker task in 17 adults with high-functioning autism spectrum disorder and 17 healthy controls. As behavioral measures of cognitive control and error processing, we included reaction times and error rates to calculate congruency effects, conflict adaptation, and post-error slowing. Event-related potentials namely error-related negativity and error positivity were measured to assess error-related brain activity. Results: Both groups of participants showed the expected congruency effects demonstrated by faster and more accurate responses in congruent compared to incongruent trials. Healthy controls exhibited conflict adaptation as they obtained performance benefits after incongruent trials whereas patients with autism spectrum disorder did not. The expected slowing in reaction times after errors was observed in both groups of participants. Individuals with autism spectrum disorder demonstrated enhanced electrophysiological error-processing compared to healthy controls indicated by increased error-related negativity and error positivity difference amplitudes. Discussion: Our findings show that adults with high-functioning autism spectrum disorder do not show the expected upregulation of cognitive control in response to conflicts. This finding implies that previous experiences may have a reduced influence on current behavior in these patients which possibly contributes to less flexible behavior. Nevertheless, we observed intact behavioral reactions after errors indicating that adults with high-functioning autism spectrum disorder can flexibly adjust behavior in response to changed environmental demands when necessary. The enhancement of electrophysiological error-processing indicates that adults with high-functioning autism spectrum disorder demonstrate an extraordinary reactivity toward errors reflecting increased performance monitoring in this subpopulation of autism spectrum disorder patients.

8.
Neuropsychologia ; 161: 108022, 2021 10 15.
Artículo en Inglés | MEDLINE | ID: mdl-34530026

RESUMEN

Deficits in audiovisual speech perception have consistently been detected in patients with Autism Spectrum Disorder (ASD). Especially for patients with a highly functional subtype of ASD, it remains uncertain whether these deficits and underlying neural mechanisms persist into adulthood. Research indicates differences in audiovisual speech processing between ASD and healthy controls (HC) in the auditory cortex. The temporal dynamics of these differences still need to be characterized. Thus, in the present study we examined 14 adult subjects with high-functioning ASD and 15 adult HC while they viewed visual (lip movements) and auditory (voice) speech information that was either superimposed by white noise (condition 1) or not (condition 2). Subject's performance was quantified by measuring stimulus comprehension. In addition, event-related brain potentials (ERPs) were recorded. Results demonstrated worse speech comprehension for ASD subjects compared to HC under noisy conditions. Moreover, ERP-analysis revealed significantly higher P2 amplitudes over parietal electrodes for ASD subjects compared to HC.


Asunto(s)
Trastorno del Espectro Autista , Trastorno Autístico , Percepción del Habla , Adulto , Encéfalo , Humanos , Habla
9.
J Atten Disord ; 12(4): 381-5, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19095892

RESUMEN

OBJECTIVE: Aspergers Syndrome can present as comorbid with attention-deficit/hyperactivity disorder (ADHD). Very few cases of the assessment and treatment of this comorbidity in adulthood are described in the research literature. METHOD: A 26-year-old patient as suffering from ADHD in combination with Aspergers Syndrome is diagnosed. Treatment is started with methylphenidate (MPH), and the patient's clinical response is observed, psychological tests concerning attention are analyzed, and a functional magnetic resonance imaging (fMRI) examination is performed during an attention-task. RESULTS: On the functional magnetic resonance imaging, a reduction of cerebral activity bilaterally in the parietal lobe under the influence of MPH is detected. CONCLUSION: Besides the neurophysiological findings, this case reports the complex impairment caused by the combination of AD/HD with Aspergers Syndrome and the broad social and behavioral benefits of treatment with MPH for this comorbidity.


Asunto(s)
Síndrome de Asperger/complicaciones , Trastorno por Déficit de Atención con Hiperactividad , Encéfalo/fisiopatología , Estimulantes del Sistema Nervioso Central/uso terapéutico , Imagen por Resonancia Magnética , Metilfenidato/uso terapéutico , Adulto , Trastorno por Déficit de Atención con Hiperactividad/complicaciones , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológico , Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Humanos , Masculino
10.
Front Psychol ; 10: 2286, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31649597

RESUMEN

Audiovisual (AV) integration deficits have been proposed to underlie difficulties in speech perception in Asperger's syndrome (AS). It is not known, if the AV deficits are related to alterations in sensory processing at the level of unisensory processing or at levels of conjoint multisensory processing. Functional Magnetic-resonance images (MRI) was performed in 16 adult subjects with AS and 16 healthy controls (HC) matched for age, gender, and verbal IQ as they were exposed to disyllabic AV congruent and AV incongruent nouns. A simple semantic categorization task was used to ensure subjects' attention to the stimuli. The left auditory cortex (BA41) showed stronger activation in HC than in subjects with AS with no interaction regarding AV congruency. This suggests that alterations in auditory processing in unimodal low-level areas underlie AV speech perception deficits in AS. Whether this is signaling a difficulty in the deployment of attention remains to be demonstrated.

11.
J Atten Disord ; 22(3): 300-308, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-25555628

RESUMEN

OBJECTIVE: Previous research in clinical samples indicated a significant association between ADHD and restless legs syndrome (RLS). The present study examined the association between adult ADHD and RLS in the German population. METHOD: Self-rating instruments to assess RLS, childhood ADHD, and adult ADHD were administered to a community-based sample ( N = 1,632). In addition, current depression and anxiety, sleep disturbances, weight, and height were assessed by self-report. RESULTS: Adult ADHD was associated with statistically significant increases in the odds of meeting diagnostic criteria for RLS even when adjusting for potential confounding variables such as weight (odds ratio [OR] = 3.18, 95% confidence interval [CI] = [1.29, 7.63], p< .001). However, the association did not hold true after adjusting for the presence of sleep disturbances (OR = 2.02, 95% CI = [0.82, 4.96], p = .13). CONCLUSION: The findings suggest a strong link between RLS and adult ADHD symptoms. Clinicians should be aware of RLS among adult ADHD patients, especially as there might be a negative interactive effect.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Síndrome de las Piernas Inquietas/epidemiología , Trastornos del Sueño-Vigilia/epidemiología , Adulto , Ansiedad/diagnóstico , Ansiedad/epidemiología , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Depresión/diagnóstico , Depresión/epidemiología , Trastorno Depresivo/epidemiología , Femenino , Alemania/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Síndrome de las Piernas Inquietas/diagnóstico , Trastornos del Sueño-Vigilia/diagnóstico
12.
MMW Fortschr Med ; 149(45): 41-3, 2007 Nov 08.
Artículo en Alemán | MEDLINE | ID: mdl-18050596

RESUMEN

We treated a chronic alcoholic patient who showed all the symptoms of scurvy (petechiae, greyish skin colour, areas of thinning hair on the head, gingivitis, elevated liver enzyme levels, hyponatraemia, hypalbuminaemia and hypothyroidism) at admission. Even today, alcoholics and chronically ill people in particular can develop symptoms of diet-related vitamin C deficiency.


Asunto(s)
Alcoholismo/complicaciones , Personal Militar , Enfermedades Profesionales/diagnóstico , Escorbuto/diagnóstico , Adulto , Alcoholismo/sangre , Alcoholismo/rehabilitación , Deficiencia de Ácido Ascórbico/diagnóstico , Diagnóstico Diferencial , Etanol/sangre , Humanos , Pruebas de Función Hepática , Masculino , Examen Neurológico
13.
J Behav Addict ; 6(4): 490-504, 2017 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-29280392

RESUMEN

Objectives There is good scientific evidence that attention deficit hyperactivity disorder (ADHD) is both a predictor and a comorbidity of addictive disorders in adulthood. These associations not only focus on substance-related addictions but also on behavioral addictions like gambling disorder and Internet use disorder (IUD). For IUD, systematic reviews have identified ADHD as one of the most prevalent comorbidities besides depressive and anxiety disorders. Yet, there is a need to further understand the connections between both disorders to derive implications for specific treatment and prevention. This is especially the case in adult clinical populations where little is known about these relations so far. This study was meant to further investigate this issue in more detail based on the general hypothesis that there is a decisive intersection of psychopathology and etiology between IUD and ADHD. Methods Two case-control samples were examined at a university hospital. Adult ADHD and IUD patients ran through a comprehensive clinical and psychometrical workup. Results We found support for the hypothesis that ADHD and IUD share psychopathological features. Among patients of each group, we found substantial prevalence rates of a comorbid ADHD in IUD and vice versa. Furthermore, ADHD symptoms were positively associated with media use times and symptoms of Internet addiction in both samples. Discussion Clinical practitioners should be aware of the close relationships between the two disorders both diagnostically and therapeutically. When it comes to regain control over one's Internet use throughout treatment and rehabilitation, a potential shift of addiction must be kept in mind on side of practitioners and patients.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Conducta Adictiva/epidemiología , Internet , Adulto , Trastornos de Ansiedad/epidemiología , Trastornos de Ansiedad/psicología , Trastorno por Déficit de Atención con Hiperactividad/psicología , Conducta Adictiva/psicología , Estudios de Casos y Controles , Comorbilidad , Trastorno Depresivo/epidemiología , Trastorno Depresivo/psicología , Femenino , Alemania/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Adulto Joven
14.
Eur J Med Genet ; 59(10): 493-8, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27596683

RESUMEN

UNLABELLED: We report on an 8-year-old boy with autism spectrum disorder (ASD), speech delay, behavioural problems, disturbed sleep and macrosomia including macrocephaly carrying a microdeletion that contains the entire NCAM2 gene and no other functional genes. Other family members with the microdeletion show a large skull circumference but do not exhibit any symptoms of autism spectrum disorder. Among many ASD-candidate genes, NCAM2 has been assumed to play a pivotal role in the development of ASD because of its function in the outgrowth and bundling of neurites. Our reported case raises the questions whether the NCAM2-deletion is the true cause of the ASD or only a risk factor and whether there might be any connection in NCAM2 with skull-size KEY WORDS: autism spectrum disorder, macrocephaly, neural cell adhesion molecule 2 protein (NCAM2), array comparative genomic hybridization (microarray).


Asunto(s)
Trastorno del Espectro Autista/genética , Trastorno Autístico/genética , Megalencefalia/genética , Molécula L1 de Adhesión de Célula Nerviosa/genética , Trastorno del Espectro Autista/fisiopatología , Trastorno Autístico/fisiopatología , Niño , Deleción Cromosómica , Hibridación Genómica Comparativa , Facies , Predisposición Genética a la Enfermedad , Humanos , Trastornos del Desarrollo del Lenguaje/genética , Trastornos del Desarrollo del Lenguaje/fisiopatología , Masculino , Megalencefalia/fisiopatología , Moléculas de Adhesión de Célula Nerviosa , Factores de Riesgo
15.
Front Hum Neurosci ; 7: 847, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-24367321

RESUMEN

There is increasing evidence from case reports that synesthesia is more common in individuals with autism spectrum conditions (ASC). Further, genes related to synesthesia have also been found to be linked to ASC and, similar to synaesthetes, individuals with ASC show altered brain connectivity and unusual brain activation during sensory processing. However, up to now a systematic investigation of whether synesthesia is more common in ASC patients is missing. The aim of the current pilot study was to test this hypothesis by investigating a group of patients diagnosed with Asperger Syndrome (AS) using questionnaires and standard consistency tests in order to classify them as grapheme-color synaesthetes. The results indicate that there are indeed many more grapheme-color synaesthetes among AS patients. This finding is discussed in relation to different theories regarding the development of synesthesia as well as altered sensory processing in autism.

16.
Front Hum Neurosci ; 5: 27, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21441988

RESUMEN

OBJECTIVE: Attention-deficit/hyperactivity disorder (ADHD) is increasingly diagnosed in adults. In this study we address the question whether there are impairments in recognition memory. METHODS: In the present study 13 adults diagnosed with ADHD according to DSM-IV and 13 healthy controls were examined with respect to event-related potentials (ERPs) in a visual continuous word recognition paradigm to gain information about recognition memory effects in these patients. RESULTS: The amplitude of one attention-related ERP component, the N1, was significantly increased for the ADHD adults compared with the healthy controls in the occipital electrodes. The ERPs for the second presentation were significantly more positive than the ERPs for the first presentation. This effect did not significantly differ between groups. CONCLUSION: Neuronal activity related to an early attentional mechanism appears to be enhanced in ADHD patients. Concerning the early or the late part of the old/new effect ADHD patients show no difference which suggests that there are no differences with respect to recollection and familiarity-based recognition processes.

17.
Ger Med Sci ; 8: Doc09, 2010 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-20421953

RESUMEN

OBJECTIVE: Response inhibition impairment is one of the most characteristic symptoms of attention-deficit/hyperactivity disorder (ADHD). Thus functional magnetic resonance imaging (fMRI) during a Go/No-Go task seems to be an ideal tool for examining neuronal correlates of inhibitory control deficits in ADHD. Prior studies have shown frontostriatal abnormalities in children and adolescents. The aim of our study was to investigate whether adults with ADHD would still show abnormal brain activation in prefrontal brain regions during motor response inhibition tasks. METHODS: fMRI was used to compare brain activation in 15 untreated adult patients with ADHD and 15 healthy reference volunteers during performance of a Go/No-Go task. RESULTS: In contrast to various other studies with children and adolescents with ADHD, we found no significant difference in the activity of anterior cingulate cortex (ACC) or other frontostriatal structures between ADHD and healthy adults. Significantly enhanced activity was found in the parietal cortex, which is known to play an important role in building up attention. CONCLUSION: We hypothesize that the enhanced activity is due to the ability of adult ADHD patients to compensate their deficits for a short time, which is demonstrated in our study by equal task performance in both groups.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Atención/fisiología , Encéfalo/fisiopatología , Imagen por Resonancia Magnética , Inhibición Neural/fisiología , Adaptación Fisiológica/fisiología , Adulto , Femenino , Lóbulo Frontal/fisiopatología , Giro del Cíngulo/fisiopatología , Humanos , Masculino , Lóbulo Parietal/fisiopatología , Desempeño Psicomotor , Adulto Joven
18.
Dtsch Arztebl Int ; 106(5): 59-64, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19562011

RESUMEN

INTRODUCTION: Asperger's syndrome is one of the autism spectrum disorders. Affected individuals display considerably impaired capacity for social interaction, unusual special interests, and a tendency towards ritualized behavior. METHODS: The etiology, symptoms, diagnosis, and treatment of Asperger's syndrome in adulthood are outlined on the basis of a selective literature review via Medline and information in relevant reference books. Furthermore, the authors report their personal experience at a special clinic for adults. RESULTS: Asperger's syndrome in adulthood can be diagnosed by thorough anamnesis, heteroanamnesis-with emphasis on childhood-and painstaking clinical examination. The considerable psychosocial impairments affect the patients' professional, social, and private lives. The precise etiology is still unknown, but a multifactorial origin with genetic, neurobiological, and psychosocial components appears probable. Although no specific, empirically tested treatment concepts have yet been established, psychotherapeutic elements (structuring and directive interventions) seem to be helpful, together with pharmacotherapy-if indicated-in the presence of comorbidity. CONCLUSIONS: Asperger's syndrome should be included in the differential diagnosis of adults who display the corresponding symptoms. The etiopathogenesis and treatment of Asperger's syndrome in adulthood should be further investigated.


Asunto(s)
Síndrome de Asperger/diagnóstico , Síndrome de Asperger/rehabilitación , Adulto , Humanos
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