Analysis of Dynamic Spectra in Ferret Primary Auditory Cortex. 1. Characteristics of Single Unit Responses to Moving Ripple Spectra
MARYLAND UNIV COLLEGE PARK INST FOR SYSTEMS RESEARCH
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The premise underlying much of the analysis and discussion in this report is that the phase locked responses to moving ripples are essentially linear. In this light, temporal and ripple transfer functions, impulse responses, and response fields provide meaningful and efficient characterization of the unit responses. This premise, however, is only indirectly validated here by such things as the correspondence between stationary and moving ripple RFs, and between the tonal and ripple BFs. A direct test of the linearity must demonstrate that the phase-locked responses obey the superposition principle. That is, the responses to single moving ripples can be added linearly to predict the responses to multiple ripples. If operative, this principle allows us to predict a units responses to any dynamic input spectrum using the procedure outlined herein. This hypothesis is validated by the results of experiments described in the companion paper.
- Anatomy and Physiology