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Titolo:
Time-on-task analysis using wavelet networks in an event-related potentialstudy on attention-deficit hyperactivity disorder
Autore:
Heinrich, H; Moll, GH; Dickhaus, H; Kolev, V; Yordanova, J; Rothenberger, A;
Indirizzi:
Univ Gottingen, D-37075 Gottingen, Germany Univ Gottingen Gottingen Germany D-37075 gen, D-37075 Gottingen, Germany Univ Heidelberg, FH Heilbronn, Heilbronn, Germany Univ Heidelberg Heilbronn Germany erg, FH Heilbronn, Heilbronn, Germany Bulgarian Acad Sci, Inst Physiol, BU-1113 Sofia, Bulgaria Bulgarian Acad Sci Sofia Bulgaria BU-1113 ysiol, BU-1113 Sofia, Bulgaria
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 7, volume: 112, anno: 2001,
pagine: 1280 - 1287
SICI:
1388-2457(200107)112:7<1280:TAUWNI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUSTAINED ATTENTION; ALPHA-OSCILLATIONS; PERFORMANCE; CHILDREN; BOYS; STIMULI; ADHD; P300;
Keywords:
event-related potentials; single sweep analysis; time-on-task analysis; wavelet networks; attention deficit hyperactivity disorder; children;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Heinrich, H Univ Gottingen, V Siebold Str 5, D-37075 Gottingen, Germany Univ Gottingen V Siebold Str 5 Gottingen Germany D-37075 many
Citazione:
H. Heinrich et al., "Time-on-task analysis using wavelet networks in an event-related potentialstudy on attention-deficit hyperactivity disorder", CLIN NEU, 112(7), 2001, pp. 1280-1287

Abstract

Objective: The aim of this event-related potential (ERP) study was to testtime-on-task analysis at the level of single sweeps in a clinical trial. Since inattentiveness is one of the main symptoms of attention-deficit hyperactivity disorder (ADHD). this child psychiatric disorder was chosen as an exemplary application. Methods: Twenty-four healthy and 24 ADHD boys, aged 9-15 years, performed an auditory selective attention task fur about 5 min. ERP single trials were analyzed using wavelet networks. Time-on-task analysis was applied to omission errors, reaction time and slow ERP components (frontal negativity, parietal positivity), represented by a low-frequency wavelet component. Results: Both performance and ERP measures showed distinct temporal al dynamics. Time-on-task effects were not only linear, but also of higher order and started after less than 1 min. For ADHD children, earlier time-on-task effects, i.e. an earlier increase of omission errors and frontal negativity, resulted. Healthy children could allocate more attentional resources juring the course of the experiment. Conclusion: Time-on-task analysis at the level of single trials revealed phenomena probably reflecting ADHD children's attentional deficits. Thus, a more differentiated ERP analysis may provide a better understanding of the pathophysiological background in neuropsychiatric disorders. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 01:12:38