Age-related effects on temporal processing speed in the inferior colliculus (IC)

Auteurs-es

  • J.R. Mendelson Dept. of Speech-Language Pathology, Institute of Medical Science, University of Toronto, 6 Queen's Park Cres. W., Toronto, Ont. M5S 3H2, Canada
  • H.J. Lee Dept. of Speech-Language Pathology, Institute of Medical Science, University of Toronto, 6 Queen's Park Cres. W., Toronto, Ont. M5S 3H2, Canada
  • T. Wallani Dept. of Speech-Language Pathology, Institute of Medical Science, University of Toronto, 6 Queen's Park Cres. W., Toronto, Ont. M5S 3H2, Canada

Mots-clés :

Biological organs, Cells, Frequency modulation, Human engineering, Speech recognition, Age, Central auditory system, Inferior colliculus, Temporal processing speed

Résumé

A recent study showed that auditory cortical cells recorded from young animals responded best to fast frequency modulated (FM) sweeps while those recorded from aged animals preferred slower sweeps. Experiments were thus conducted to determine whether or not this aging effect was exclusive to the cortex or if it was apparent in subcortical structures such as in the inferior colliculus (IC). Experiments were made on 18 young (3-4 months) and 12 old (24-30 months) male Long Evans hooded rats. All stimuli were generated and data collected by a computer using the MALab system. The obtained data indicate that aging does not seem to affect FM speed selectivity at the level of the IC.

Fichiers supplémentaires

Publié-e

2001-09-01

Comment citer

1.
Mendelson J, Lee H, Wallani T. Age-related effects on temporal processing speed in the inferior colliculus (IC). Canadian Acoustics [Internet]. 1 sept. 2001 [cité 15 mai 2026];29(3):70-1. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1388

Numéro

Vol. 29 No. 3 (2001)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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