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Titolo:
Electrophysiological measures and dual-task performance in Tourette syndrome indicate deficient divided attention mechanisms
Autore:
Johannes, S; Wieringa, BM; Nager, W; Muller-Vahl, KR; Dengler, R; Munte, TF;
Indirizzi:
Hannover Med Sch, Dept Neurol, D-30623 Hannover, Germany Hannover Med SchHannover Germany D-30623 rol, D-30623 Hannover, Germany Otto Von Guericke Univ, Dept Neuropsychol, Magdeburg, Germany Otto Von Guericke Univ Magdeburg Germany uropsychol, Magdeburg, Germany Med Hsch Hannover, Dept Clin Psychiat & Psychotherapy, Hannover, Germany Med Hsch Hannover Hannover Germany t & Psychotherapy, Hannover, Germany
Titolo Testata:
EUROPEAN JOURNAL OF NEUROLOGY
fascicolo: 3, volume: 8, anno: 2001,
pagine: 253 - 260
SICI:
1351-5101(200105)8:3<253:EMADPI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; COGNITIVE BRAIN POTENTIALS; AUDITORY ODDBALL TASKS; CLOSED-HEAD-INJURY; FUNCTIONAL NEUROANATOMY; SUSTAINED ATTENTION; INTRACRANIAL ERPS; CHILDREN; DISORDER; TARGET;
Keywords:
attention; audition; event-related potentials; Tourette syndrome; vision;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Johannes, S Hannover Med Sch, Dept Neurol, D-30623 Hannover, Germany Hannover Med Sch Hannover Germany D-30623 Hannover, Germany
Citazione:
S. Johannes et al., "Electrophysiological measures and dual-task performance in Tourette syndrome indicate deficient divided attention mechanisms", EUR J NEUR, 8(3), 2001, pp. 253-260

Abstract

Tourette syndrome has been associated with impairments of attentional functions such as distractability, even in subjects without co-morbid attentiondeficit hyperactivity disorder. Based on the results of earlier research we hypothesized that Tourette syndrome patients might employ altered controlmechanisms of attentional processes and have concurrent difficulties in allocating their attentional resources among competing tasks. Event-related brain potentials (ERPs) were recorded in a group of Tourettesyndrome patients and in a matched control group during a dual task experiment. This experiment required the simultaneous detection of visual and auditory target stimuli which were manipulated to yield two different difficulty levels each of which were varied orthogonally. The behavioural parameters confirmed the intended performance differences between difficult-to-detect targets and easy-to-detect targets. This was paralleled by lower amplitudes and longer latencies of the corresponding P3b-ERP subcomponents. Although Tourette syndrome patients were unimpaired in overall performance they showed an increased interference of visual task demands with auditory target perception. In parallel they also exhibited a reduced amplitude of the P3b component to auditory targets. The findings show that Tourette syndrome patients are not generally impaired in their dual task performance. The allocation of attentional resources to competing tasks however, is altered. We speculate that this may be related to deficient inhibitory functions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/10/20 alle ore 10:52:23