Stimulus-dependent modulations of correlated high-frequency oscillations in cat visual cortex
Stimulus-dependent modulations of correlated high-frequency oscillations in cat visual cortex
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DOI：
10.1093/cercor/7.1.70
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发表时间：
1997-01-01
期刊：
影响因子：
3.7
通讯作者：
Eckhorn, R
中科院分区：
文献类型：
--
作者：
Brosch, M;Bauer, R;Eckhorn, R
相关的神经活动参与视觉刺激的皮层表征的假设进行了检查，通过记录多个单位的活动和局部场电位与非重叠的感受野在区域17和18的神经元。使用相干函数，神经信号的振荡模式（35-100 Hz）的相关性进行了研究，在三种刺激条件下：（i）一个全场光栅或一个长杆移动浴感受野;（ii）掩蔽两个感受野之间的区域，同时刺激其余的视野;和（iii）两个单独的刺激同时在相反的方向移动。振荡的连贯性被发现在第一刺激条件下比在其他两个条件下显着较高。由于不同的视觉刺激反映在神经活动的一致性。我们的结论是，相关神经活动是一个潜在的候选人远编码的感觉信息。
The hypothesis that correlated neural activity is involved in the cortical representation of visual stimuli was examined by recording multi unit activity and local field potentials from neurons with non-overlapping receptive fields in areas 17 and 18. Using coherence functions, correlations of oscillatory patterns (35-100 Hz) of neural signals were investigated under three stimulus conditions: (i) a whole field grating or a long bar moving across bath receptive fields; (ii) masking the region between both receptive fields while stimulating the remaining visual field; and (iii) two separate stimuli simultaneously moving in opposite directions. Coherences of oscillations were found to he significantly higher in the first stimulus condition than in the other two conditions. Since different visual stimuli were reflected in the coherence of neural activity. we concluded that correlated neural activity is a potential candidate far coding of sensory information.