[Responses of directionally sensitive neurons of the frog midbrain tectum, their adaptation and extrapolation...

The greatest coherence of responses and latency for neuronal pairs was found at interelectrode distances up to 300 microns which is due, apparently, to dimensions of the afferent fibers' branching areas. The adaptation and extrapolation features observed in majority of the neurons, were more obvious in the tectum nuclear layers rather than in the fiber those. The more stable responses of the fiber layers' neurons suggest a representation of branches stemming from the fibers of the retina ganglionic cells, while in the nuclear layers the elements with high adaptability: the "novelty neurons", are localized.