Eggermont J J
Department of Psychology, University of Calgary, Alberta, Canada.
Neuroreport. 1995 Aug 21;6(12):1645-8. doi: 10.1097/00001756-199508000-00014.
Responses were recorded from 130 single neurones in the primary auditory cortex of 12 ketamine-anaesthetized cats in response to double-click stimuli, to a /ba/-/pa/ phoneme continuum and to gaps inserted early (after 5 ms) and late (after 500 ms) in a 1 s duration noiseburst. Stimulus levels were between 45 and 75 dB SPL. Neural detection threshold for the 'late gap' was less than 5 ms. For the double click and 'early gap' stimuli thresholds were between 40 and 50 ms, whereas the phoneme continuum threshold for voice-onset-time (VOT) was between 10 and 25 ms. The 'late gap' and VOT thresholds are similar to psychophysical gap detection and the /ba/-/pa/ categorical perception boundary respectively.
记录了12只氯胺酮麻醉猫的初级听觉皮层中130个单神经元对双击刺激、/ba/-/pa/音素连续体以及在1秒时长的噪声脉冲中早期（5毫秒后）和晚期（500毫秒后）插入的间隙的反应。刺激强度在45至75 dB SPL之间。“晚期间隙”的神经检测阈值小于5毫秒。对于双击和“早期间隙”刺激，阈值在40至50毫秒之间，而音素连续体的语音起始时间（VOT）阈值在10至25毫秒之间。“晚期间隙”阈值和VOT阈值分别类似于心理物理学间隙检测和/ba/-/pa/类别感知边界。
