[Responses of neurons of the medial geniculate body in the cat to positive and negative intensity increments in noise signals].

73% of the cat internal geniculate body neurons responded with a phasic on-response to positive intensity increments of the white noise signal. 35% of the neurons responded with a phasic off-response to negative increments of the signal. At a constant rate of increment (6 dB), the amplitude and latency of the responses were found to depend on the level of the basis intensity. The amplitude dependence was rather irregular whereas the latency dependence was different in different neurons. Neurons were found which had the latencies of their on-responses augmenting with increase of the basis. The on- and off-responses revealed the ability of most neurons to single out the moment of intensity increment of a wide-band signal.