Limited plasticity of rabbit's visual cortex and hippocampal neurons of differences

被引：0
|
作者：
Polyansky, VB [1 ]
Evtikhin, DV [1 ]
Sokolov, EN [1 ]
Kryuchkova, AV [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Higher Nervous Act & Psychophysiol, Moscow, Russia
来源：
ZHURNAL VYSSHEI NERVNOI DEYATELNOSTI IMENI I P PAVLOVA | 2005年 / 55卷 / 03期
关键词：
oddball; rabbit; orienting reflex; deviants and standards; visual cortex and hippocampal neurons of differences;
D O I：
暂无
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
The activity of 41 visual cortex and 20 hippocampal neurons from field CA1 was registered in experiments using oddball-stimulation with different color stimuli varied in intensity. 34% cortical and 37% hippocampal neurons demonstrated plasticity reactions. The significant increase of latest phases of neuronal activity (200-500 and 200-1000 ms after stimulation for cortical neurons and 300-550 ms for hippocampal neurons) was shown in responses to rare deviant stimuli, which had a less intensity than frequently standards. The quantity of the earliest neuronal phase of activity (40-120 ms after stimulation) was stabilized in responses to deviants and standards during the experiment. We propose that such increase of the latest phases of neuronal activity (the limited plasticity) may reflect the mechanisms of orienting reaction.
引用
收藏
页码：360 / 367
页数：8
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