Rhythmic and patterned neuronal firing in visual cortex

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Abstract
We present evidence from multi-electrode recordings that the stimulus driven activity in a region of monkey visual cortex displays synchronousoscillatory behaviour with temporally changing patterns of firing. The spatial-temporal patterns are dependent on cortical layer and on visual stimulus, ‘build up and die down’ with a period of 70-100 msec, and cannot be factorized into separate spatial and temporal components. This finding supports neural network models which explicitly incorporate spatial-temporal structure, ruling against a purely spatial code for information processing. The new type of analysis presented here is also suitable for direct on-line interactive analysis during multi-electrode recording experiments. Further, it could be modified for use in human EEG or evoked response recordings. [Neurol Res 1993; 15:46-50]

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