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Titolo:
Event-related potentials recorded from the cingulate gyrus during attentional tasks: a study in patients with implanted electrodes
Autore:
Turak, B; Louvel, J; Buser, P; Lamarche, M;
Indirizzi:
Hop St Anne, Ctr Neurophysiol Clin & Neurochirurg Stereotax, F-75674 Paris, France Hop St Anne Paris France F-75674 hirurg Stereotax, F-75674 Paris, France Univ Paris 06, Inst Neurosci, F-75571 Paris, France Univ Paris 06 Paris France F-75571 Inst Neurosci, F-75571 Paris, France
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 1, volume: 40, anno: 2002,
pagine: 99 - 107
SICI:
0028-3932(2002)40:1<99:EPRFTC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; INTRACEREBRAL POTENTIALS; SELECTIVE ATTENTION; PREFRONTAL CORTEX; SPATIAL ATTENTION; VISUAL-STIMULI; RARE TARGET; ELECTRICAL-STIMULATION; WORKING-MEMORY; FUNCTIONAL MRI;
Keywords:
cingulate gyrus; attention; cognitive tasks;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Lamarche, M Hop St Anne, Ctr Neurophysiol Clin & Neurochirurg Stereotax, F-75674 Paris, France Hop St Anne Paris France F-75674 otax, F-75674 Paris, France
Citazione:
B. Turak et al., "Event-related potentials recorded from the cingulate gyrus during attentional tasks: a study in patients with implanted electrodes", NEUROPSYCHO, 40(1), 2002, pp. 99-107

Abstract

Recent neuroimaging data suggests that the cingulate gyrus is involved in a variety of cognitive tasks. In this study sensory field potentials were directly recorded from the cingulate gyrus in order to investigate its implication in attentional processes associated or not with a motor task. Evokedpotentials recordings were performed in 29 epileptic patients with multilead electrodes implanted for presurgical evaluation, who agreed to participate in an experimental protocol consisting of a series of paradigms designedusing a warning auditory tone, two distinct visual patterns and various attentional, memory, motor and decisional tasks. Our data shows that evoked potentials could be recorded from various parts of the cingulate gyrus. The inclusion of an instruction in the experimental paradigm resulted in an increase in the amplitude of the late, intrinsic component of the visual evoked potential culminating at about 450 ms. Several variations of response patterns across individuals were identified. We conclude that the cingulate gyrus appears to be a multimodal area involved in several types of cognitive activity, including attention. Variations in response patterns are probablyrelated to differences in the strategy adopted by each subject when faced with a particular cognitive task. (C) 2001 Elsevier Science Ltd. All rightsreserved.

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Documento generato il 21/01/20 alle ore 01:42:52