COCHLEAR MICROPHONIC SENSITIVITY IN THE RAT AS A FUNCTION OF AGE.

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Abstract:

The report evaluates the suitability of the rat species for studying the effect of ageing on the ear. Cochlear microphonic CM sensitivity was measured at frequencies from 0.1- to 20-kHz in male albino rats Wistar 1 month, 13 months, and 18 months old. The two youngest groups had equally sensitive ears but the ears of the oldest group showed large losses in CM sensitivity at all frequencies. If the rat ear is to be used to study the effect of ageing, special measures are needed with respect to middle-ear infection. Author

Author(s):
Price, G. Richard
Author Organization(s):
HUMAN ENGINEERING LABS ABERDEEN PROVING GROUND MD
Descriptive Note:
Preliminary rept.,
Pagination:
0011

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
HEL-TN-8-70
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*AUDITORY PERCEPTION, DETERIORATION), (*EAR, SENSITIVITY), (*AGING(PHYSIOLOGY), SCIENTIFIC RESEARCH), LABORATORY ANIMALS, RATS, AUDITORY SIGNALS, FREQUENCY, INFECTIONS, PERFORMANCE(HUMAN)
Field(s)/Group(s):
Anatomy and Physiology
Report Date:
1970 Jul 01