Evidence for interhemispheric motor-level transfer in a simple reaction time task: an EEG study

被引：0

作者：

Gregor Thut

Claude-Alain Hauert

Stéphanie Morand

Margitta Seeck

Theodor Landis

Christoph Michel

机构：

[1] Faculty of Psychology,

[2] University of Geneva,undefined

[3] CH-1227 Carouge,undefined

[4] Switzerland,undefined

[5] Plurifaculty Program of Cognitive Neuroscience,undefined

[6] Functional Brain Mapping Laboratory,undefined

[7] Department of Neurology,undefined

[8] University Hospital Geneva,undefined

[9] 24 Rue Micheli du Crest,undefined

[10] CH-1211 Geneva 14,undefined

[11] Switzerland,undefined

[12] e-mail: gregor.thut@hcuge.ch,undefined

[13] Tel.: +41-22-372-83-39,undefined

[14] Fax: +41-22-372-32-33,undefined

[15] Department of Neurology,undefined

[16] University Hospital HCUG,undefined

[17] CH-1211 Geneva,undefined

[18] Switzerland,undefined

来源：

Experimental Brain Research | 1999年 / 128卷

关键词：

Key words Simple reaction time task; Interhemispheric transfer; Event-related potentials; Temporal segmentation; Source localization;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Simple visuomanual reaction time tasks require interhemispheric communication when stimuli are presented in the hemifield opposite the responding hand. Although confirmed in many studies, it is still a matter of debate when, at what functional level and at what site this interhemispheric transfer takes place. To address these questions, we recorded event-related potentials (ERPs) in 12 healthy subjects performing such a task and analyzed the data using techniques based on topographic ERP map characteristics. A method which has proved useful for associating ERP map configurations of different time periods with functional states of the brain was supplemented by a source localization procedure. The results suggest that transfer occurs late in time, on a functional motor level and at frontal sites, at least for left-to-right interhemispheric direction of transfer.

引用

页码：256 / 261

页数：5