Response-Field Dynamics in the Auditory Pathway

Abstract

We investigated the response properties and functional organization of Primary Auditory Cortex (AI), to determine how the shape of the acoustic spectrum is represented in single-unit responses. The experiments employ broadband stimuli with sinusoidally modulated spectral envelopes (ripples), and systems theoretic methods to derive unit response fields and to characterize their spectro-temporal properties. These methods assume linearity of auditory responses with respect to the stimulus spectral envelope. We also address the degree of separability of response fields with respect to upward and downward moving sounds. We verified that unit responses to complex sounds with both upward and downward components can be predicted from their responses to simple ripples.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1997
Accession Number
ADA484249

Entities

People

  • Didier A. Depireux
  • Jonathan Simon
  • Powen Ru
  • Shihab A Shamma

Organizations

  • University of Maryland

Tags

DTIC Thesaurus Topics

  • Anatomy
  • Biological Sciences
  • Broadband
  • Communication Disorders
  • Computational Neuroscience
  • Data Analysis
  • Decomposition
  • Dynamics
  • Epithelium
  • Frequency
  • Information Operations
  • Linear Systems
  • Maryland
  • Neural Pathways
  • Transfer Functions
  • Two Dimensional
  • Universities

Readers

  • Control Systems Engineering.
  • Speech Processing/Speech Recognition.