Interhemispheric transmission of information and functional asymmetry of the human brain

被引：65
作者：
Nowicka, A
Grabowska, A
Fersten, E
机构：
[1] M NENCKI INST EXPTL BIOL, DEPT NEUROPHYSIOL, PL-02093 WARSAW, POLAND
[2] POLISH ACAD SCI, MED RES CTR, NEUROSURG CLIN, PL-02325 WARSAW, POLAND
来源：
NEUROPSYCHOLOGIA | 1996年 / 34卷 / 02期
关键词：
information transmission; interhemispheric communication; hemispheric asymmetry; latency differences; visual evoked potential;
D O I：
10.1016/0028-3932(95)00064-X
中图分类号：
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号：
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要：
The study investigated directional differences in interhemispheric transmission time using the VEPs method. Specificially we were interested in whether there exists an asymmetry in the transmission of information to and from the hemisphere specialized in its processing. Two type of stimuli, specific for the left and right hemisphere, were presented in the left and right visual fields. The latency differences between visual evoked potential components registered in the hemispheres ipsilateral and contralateral to the stimulated hemifield were compared. Interhemispheric transmission time was shorter when the information was transferred from the hemisphere non-specialized for its processing to the specialized one than in the opposite direction. The results suggest the existence of a physiological mechanism that ensures fast transmission of information to that hemisphere which is more efficient in its processing.
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收藏
页码：147 / 151
页数：5
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