Research Paper: PDF OnlyNeural correlates of gap detection and auditory fusion in cat auditory cortexEggermont, J. J. Author Information Behavioural Neuroscience Research Group, Department of Psychology, University of Calgary, Calgary, Alberta, Canada, T2N 1N4 NeuroReport: August 1995 - Volume 6 - Issue 12 - p 1645-1648 Buy Abstract 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 5ms. For the double click and 'early gap' stimuli thresholds were between 40 and 50ms, 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. © Lippincott-Raven Publishers.
