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Titolo:
Brain mapping of bilateral interactions in attention deficit hyperactivitydisorder and control boys
Autore:
Steger, J; Imhof, K; Steinhausen, HC; Brandeis, D;
Indirizzi:
Univ Zurich, Dept Child & Adolescent Psychiat, CH-8032 Zurich, SwitzerlandUniv Zurich Zurich Switzerland CH-8032 hiat, CH-8032 Zurich, Switzerland ETH Zurich, Biomech Lab, Zurich, Switzerland ETH Zurich Zurich Switzerland Zurich, Biomech Lab, Zurich, Switzerland
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 7, volume: 111, anno: 2000,
pagine: 1141 - 1156
SICI:
1388-2457(200007)111:7<1141:BMOBII>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; CONTINUOUS PERFORMANCE-TEST; ADDITIVE FACTOR METHOD; SIMPLE REACTION-TIME; CORPUS-CALLOSUM; P300 LATENCY; CHILDHOOD HYPERACTIVITY; MORPHOMETRIC ANALYSIS; DIAGNOSTIC-TOOL; CHILDREN;
Keywords:
brain mapping; visual evoked potential; P3; lateralized readiness potential; hyperactivity; children;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
78
Recensione:
Indirizzi per estratti:
Indirizzo: Brandeis, D Univ Zurich, Dept Child & Adolescent Psychiat, Neumunsterallee9, CH-8032 Zurich, Switzerland Univ Zurich Neumunsterallee 9 Zurich Switzerland CH-8032 land
Citazione:
J. Steger et al., "Brain mapping of bilateral interactions in attention deficit hyperactivitydisorder and control boys", CLIN NEU, 111(7), 2000, pp. 1141-1156

Abstract

Objectives: Children with attention deficit hyperactivity disorder (ADHD) are thought to have deficits in attentional control, whereas the status of deficits at visual and pre-motor processing stages is unclear. Methods: The timing of such deficits was examined with event-related potential (ERP) microstates (stimulus- and response-related) and continuous force recordings in 15 ADHD and 16 control boys in a choice reaction time task. Unilateral and bilateral stimulus and response conditions were used to assess bilateral interactions at visual, central, and pre-motor stages. Results: ADHD boys showed poorer performance, particularly in the bilateral conditions. In the visual P1 microstates, they exhibited less suppressionof visual evoked potential (VEP) amplitudes but similar speeding of VEP latencies in the bilateral compared to the summed unilateral condition. The central P3 and pre-/post-response microstates were attenuated and topographically altered in ADHD boys. The attenuation was most pronounced in the bilateral condition and was similar for stimulus- and response-related averages. The lateralized readiness potential was also reduced in ADHD boys; this was most pronounced for the left hand responses. Conclusions: Brain mapping during uni- and bilateral stimulus and responseconditions thus indicates multilevel deficits in ADHD boys affecting visuo-attentional, central, and pre-motor processes. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.

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Documento generato il 04/04/20 alle ore 02:24:45