@article{oai:niigata-u.repo.nii.ac.jp:00021548, author = {古川原, 誠}, issue = {3}, journal = {新潟医学会雑誌, 新潟医学会雑誌}, month = {Mar}, note = {In the auditory cortex AI of the cat, the neurons responsive to the band of noise (75%) were also responsive to the saw-tooth amplitude modulated (AM) tones. Each neuron has the best band width for the band of noise and the best modulation frequency for the saw-tooth AM tone. A saw-tooth AM tone with a fast rising and slow falling envelope (FR) has the same spectrum as that with a slow rising and fast falling envelope (SR). Some of these neurons responded to both FR and SR with the similar response pattern but some others responded differently to these two stimuli, i.e. the latter were wave envelope selective and the former were not. The response was phase-locked to the modulating saw-tooth at low modulation frequencies. 1) Wave envelope selectivity did not change, when either center frequency or modulation frequency was changed. High correlation was found between the best modulation frequency and the best band width. 2) By the wave envelope selectivity, neurons were classified into 3 groups: neurons selective to FR. selective to SR, and equally selective to FR and SR. There were many neurons in the group selective to FR and the group equally selective to FR and SR. There were fewer neurons in the group selective to SR than other groups. And there was no neuron selective to SR with the best modulation frequency higher than 100 Hz. 3) As the modulation frequency was increased, the phase lock effect decreased. The response of these neurons was triggered by the phase of envelope where the amplitude was rapidly changed. The latency of the response from the triggering phase was a characteristic constant in each neuron.}, pages = {162--176}, title = {猫皮質聴ニューロンの鋸歯状AM音に対する波形包絡選択性}, volume = {105}, year = {1991} }