Spectro-Temporal Methods in Primary Auditory Cortex
MARYLAND UNIV COLLEGE PARK INST FOR SYSTEMS RESEARCH
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In Primary Auditory Cortex AI of ferrets, we characterize the spectro-temporal properties of cells responses. We find that the responses correspond to temporal modulations from 4 to 40 Hz, and spectral modulations from 0 to 2 cyclesoctave, in the stimulus spectro-temporal envelope. The Spectro-Temporal Response Function STRF is the linear component of the response. It is an excellent predictor of response. Different methods of determining the STRF are in good agreement, make similar and similarly accurate predictions. This briefing examines Spike-Triggered Averaging. Spike-Triggered Averaging is an effective method to measure the STRF, when used with Temporally Orthogonal Ripple Combinations TORCs as stimuli. Spike-Triggered Averaging methods do not depend on quadrant separability, and provide a good method for seeking non-quadrant separable responses.
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