Accession Number : AD0271650

Title :   TRINDAD EXPEDITION

Corporate Author : LONDON UNIV (ENGLAND)

Personal Author(s) : PYE,J.D. ; PYE,A.

Report Date : NOV 1961

Pagination or Media Count : 1

Abstract : Electrophysiological experiments on the cochlea and middle ear of bats, with reference to the mechanism of echolocation were performed. The results justify criticisms of earlier theories and support the hypothesis of peripheral information handling at close range. The ultrasonic cries of certain moths were examzed briefly an the response of the bat's ear to these was recorded. Orientation cries of several bats were recorded on magnetic tape. A large collection of bats and other vertebrates was photographed and specimens were fixed by an intravital method for subsequent histological andANATOMICAL EXAMINATION. The problem of location of underwater prey by the fishing bat Noctilio was also investigated. (Author)

Descriptors :   *BATS, EAR, HEARING, HISTOLOGY, PHYSIOLOGY, SOUND, ULTRASONIC RADIATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE