[Characteristics of the activity of neurons of the parietal cortex of alert monkeys in comparison to the frontal and motor areas].

Analysis was made of spike activity of nerve cells in the parietal cortex of alert Macaca mulatta when the animal performed the task of delayed alternative choice. The parietal cortex neurones (at the boundary between fields 5 and 7) were divided into two groups by the mean background frequency of their spike activity and by their functional properties. Cells with relatively low frequency (up to 10 imp/s) resemble by their functional properties prefrontal cortex neurones, whereas neurones with a background frequency over 10 imp/s reveal a similarity with motor cortex cells.