Direction selectivity of excitatory and inhibitory neurons in ferret visual cortex

被引：8
|
作者：
Gibber, M [1 ]
Chen, B [1 ]
Roerig, B [1 ]
机构：
[1] Univ Maryland, Sch Med, Dept Anat & Neurobiol, Baltimore, MD 21201 USA
来源：
NEUROREPORT | 2001年 / 12卷 / 10期
关键词：
direction selectivity; ferret; inhibition; interneurons; single units; visual cortex;
D O I：
10.1097/00001756-200107200-00049
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
Direction selectivity is a characteristic feature of neurons in the visual cortex of higher mammals. Excitatory and inhibitory cortical neurons receive different patterns of synaptic connections resulting in different receptive field properties. We have analyzed the direction tuning of excitatory and inhibitory neurons of ferret visual cortex using single unit recordings. Direction tuning was constant among neurons in a vertical column. The majority (>80%) of excitatory (regular spiking) neurons were direction tuned or direction biased. Fast spiking (inhibitory) neurons were orientation. but only weakly or not direction tuned. This indicates that excitatory and inhibitory neurons have different functions in visual processing and their different integration in thalamocortical and intracortical circuits results in a diversification of receptive field properties. NeuroReport 12:2293-2296 (C) 2001 Lippincott Williams & Wilkins.
引用
收藏
页码：2293 / 2296
页数：4
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