Abstract
Responses of cochlear nucleus neurons to complex tones were recorded with microelectrode technique in anesthetized cats . Complex tones for stimulus were composed of two pure tones. (The first group: 670, 1250 and 2400Hz; The second group: 350, 500 and 1100Hz) The type of PST (post-stimulus time) histogram was dependented on frequency andintensity of stimulus tone. We consider that this phenomena is relatedto the processing mechanism in cochlear nucleus. Responses which wereobtained from on-type neuron were changed under two tone stimuli and different type of response appeared. The neuron which didn't show any response to f1 tone showed more inhibition under two tone condition than it did to f2 tone alone. According to the results, the followingwas concluded: Response patterns of the cochlear nucleus neuron of thecat were changed under stimulus condition and it is considered as a result of neural mechanism of the cochlear nucleus.
