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Titolo:
Motor control and state regulation in children with ADHD: a cardiac response study
Autore:
Borger, N; van der Meere, J;
Indirizzi:
Expt Psychol Lab, NL-9712 TS Groningen, Netherlands Expt Psychol Lab Groningen Netherlands NL-9712 TS Groningen, Netherlands
Titolo Testata:
BIOLOGICAL PSYCHOLOGY
fascicolo: 2-3, volume: 51, anno: 2000,
pagine: 247 - 267
SICI:
0301-0511(200001)51:2-3<247:MCASRI>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERVASIVELY HYPERACTIVE-CHILDREN; HEART-RATE; SUSTAINED ATTENTION; HUMAN-PERFORMANCE; INHIBITION; ACTIVATION; VIGILANCE; BEHAVIOR; DISORDER; WORKLOAD;
Keywords:
ADHD; motor preparation; inhibition; cardiac response;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
68
Recensione:
Indirizzi per estratti:
Indirizzo: van der Meere, J Expt Psychol Lab, Grote Kruisstr 2-1, NL-9712 TS Groningen, Netherlands Expt Psychol Lab Grote Kruisstr 2-1 Groningen Netherlands NL-9712 TS
Citazione:
N. Borger e J. van der Meere, "Motor control and state regulation in children with ADHD: a cardiac response study", BIOL PSYCH, 51(2-3), 2000, pp. 247-267

Abstract

The goal of the current study was to investigate whether poor motor control in children with Attention-Deficit Hyperactivity Disorder (ADHD) was associated with a state regulation deficit. For this purpose, 28 ADHD and 22 healthy children carried out two Go No-Go tests: one with a fast stimulus presentation rate, and the other with a slow stimulus presentation rate. Groups were compared on RT performance and on specific cardiac measures, reflecting arousal, motor activation/inhibition, and effort allocation. No group difference in the arousal measure (mean heart rate) was found. Further, groups did not differ with respect to response inhibition: in both the fast andslow condition, ADHD children made comparable numbers of errors of commission to the control group, and the groups did not differ with respect to theheart rate deceleration after the onset of the No-Go signal, reflecting motor inhibition. Group differences were found with respect to motor activation and effort allocation in the condition with a slow presentation rate. Inthis condition: (1) ADHD children reacted more slowly to Go signals than control children, suggesting poor motor activation; (2) the heart rate deceleration before the onset of Go signals, which is believed to reflect motor preparation, was less pronounced in the ADHD children; (3) after Go signals, where a response was given, the cardiac shift from deceleration to acceleration. indicating response initiation, was delayed in ADHD children; and (4) ADHD children had greater heart rate variability (0.10 Hz component) than the control group, indicating that less effort was allocated. No group differences in motor activation and effort allocation were found in the condition with a fast presentation rate of stimuli. We conclude, therefore, thata slow presentation rate of stimuli brings the ADHD child in a non-optimalactivation state. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/02/20 alle ore 08:18:41