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Interhemispheric changes in alpha rhythm related to time perception

dc.creatorContreras, Carlos M.
dc.creatorMayagoitia, Lilian
dc.date.accessioned2017-06-29T04:13:35Z
dc.date.available2017-06-29T04:13:35Z
dc.date.issued1985es_ES
dc.identifier40es_ES
dc.identifier.issn0031-9384es_ES
dc.identifier.urihttp://repositorio.inprf.gob.mx/handle/123456789/4735
dc.language.isoenges_ES
dc.relation34 (4) 525-529 p.es_ES
dc.relationversión del editores_ES
dc.rightsacceso cerradoes_ES
dc.subject.meshAdultes_ES
dc.subject.meshAlpha rhythmes_ES
dc.subject.meshDominance, Cerebrales_ES
dc.subject.meshPhysiologyes_ES
dc.subject.meshFemalees_ES
dc.subject.meshFunctional lateralityes_ES
dc.subject.meshHumanses_ES
dc.subject.meshMalees_ES
dc.subject.meshReaction timees_ES
dc.subject.meshTime perceptiones_ES
dc.titleInterhemispheric changes in alpha rhythm related to time perceptiones_ES
dc.typearticlees_ES
dc.contributor.affiliationDepartamento de Fisiología, Instituto de Investigaciones Biomédicas, UNAM Ciudad Universitaria, Coyoacán 04510, México, D. F. Méxicoes_ES
dc.relation.jnabreviadoPHYSIOL BEHAVes_ES
dc.relation.journalPhysiology & Behaviores_ES
dc.identifier.placeEstados Unidoses_ES
dc.date.published1985es_ES
dc.identifier.organizacionInstituto Mexicano de Psiquiatríaes_ES
dc.identifier.eissn1873-507Xes_ES
dc.description.monthAbres_ES
dc.description.abstractotrodiomaEach cerebral hemisphere processes environmental information in a different but complementary manner. Structures located in the left hemisphere are assumed to participate in symbolic-logic thinking. Time perception may be considered among such thinking processes. The present study evaluates bilateral occipito-central EEG activity in healthy, right-handed subjects which was produced while they performed a visuomotor monitoring task. The task consisted of two stages. The first stage involved the subject's learning a fixed time interval (10 sec) and the measurement of their reaction time. Subjects responded to an isolated light stimulus by pressing a button with the dominant hand. In the second stage, the subjects accuracy in estimating interval-length was evaluated. Two forms of EEG analysis were used, frequency and alpha ratio, each of which was measured both prior to and subsequent to the motor response. A reversal group was used to carry out a complementary test. Subjects responded in the first block of experiments with the non-dominant (left) hand and with the dominant hand in the second. Results showed that left hemisphere activity was continuous during the interval-learning stage and with optimal reaction times and remained continuous when estimation values approximated the real interval. In addition, in optimal reaction time and near to optimal time estimation responses, the left side showed lower frequency and alpha ratio than did the right. Finally a progressive enhancement in both parameters from the right hemisphere was related to deterioration in test performance. Results from the reversal group did not differ from those of the first group. As evaluated by gross measurements of the EEG, a predominant participation of the left hemisphere in time processing is concluded.es_ES
dc.subject.kwDominancia hemisféricaes_ES
dc.subject.kwTiempo de reacciónes_ES
dc.subject.kwEstimación del tiempoes_ES
dc.subject.kwRitmo alfaes_ES
dc.subject.kwPercepción del tiempoes_ES
dc.subject.koHemispheric dominancees_ES
dc.subject.koReaction timees_ES
dc.subject.koTime estimationes_ES
dc.subject.koAlpha rhythmes_ES
dc.subject.koTime perceptiones_ES


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