Optical imaging of intrinsic signals in the auditory cortex

Authors

  • Noam Harel Univ of Toronto, Toronto, Canada
  • Richard J. Mount Univ of Toronto, Toronto, Canada
  • Robert V. Harrison Univ of Toronto, Toronto, Canada

Keywords:

Imaging techniques, Light absorption, Living systems studies, Neurophysiology, Tissue, Auditory cortex, Central auditory activity patterns

Abstract

The optical imaging of intrinsic signals for exploring central auditory activity patterns was investigated on acoustically evoked intrinsic signals from the auditory cortex of anesthetized adult chinchillas. Intrinsic signals in response to acoustic stimulation were found in a cortical area previously defined as primary auditory cortex. The stimulus evoked intrinsic signal has an onset 0.5-1 s after stimulus onset, reaches a maximum after 3-4 s, and then decays at a slower rate. Changes in light absorption in three regions within the activated auditory cortex are presented against activity in two control areas: a nonauditory cortical area and the bone on the edge of the craniotomy.

Additional Files

Published

1998-09-01

How to Cite

1.
Harel N, Mount RJ, Harrison RV. Optical imaging of intrinsic signals in the auditory cortex. Canadian Acoustics [Internet]. 1998 Sep. 1 [cited 2026 May 3];26(3):76-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1165

Issue

Vol. 26 No. 3 (1998)

Section

Proceedings of the Acoustics Week in Canada

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