Optical imaging of intrinsic signals in the auditory cortex

Auteurs-es

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

Mots-clés :

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

Résumé

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.

Fichiers supplémentaires

Publié-e

1998-09-01

Comment citer

1.
Harel N, Mount RJ, Harrison RV. Optical imaging of intrinsic signals in the auditory cortex. Canadian Acoustics [Internet]. 1 sept. 1998 [cité 10 mai 2026];26(3):76-7. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1165

Numéro

Vol. 26 No. 3 (1998)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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