BIOPHYSICAL RESEARCH ON THE CETACEAN'S EAR BONES.

Abstract

Certain physical properties of the ossicles of the middle ear in Odontocete Cetacea were studied in relation with the distinct perception of echolocation echoes and of the ultrasonic frequencies which they include. The research was made in comparison with other species, aquatic, amphibious, terrestrial and flying, which employ, or do not employ, sonar systems. Measurements were made for the following points: density, mineral analysis, speed of sound propagation, X-ray diffraction patterns, microradiography and electron microscopy, at once on different ossicles, and in comparison with cranial bones. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1968
Accession Number
AD0693217

Entities

People

  • Dominique Giraud-sauveur

Tags

DTIC Thesaurus Topics

  • Cetaceans
  • Diffraction
  • Ear
  • Electron Microscopy
  • Frequency
  • Microscopy
  • Odontocetes
  • Physical Properties
  • Quantum Properties
  • Ultrasonic Frequencies
  • X Rays
  • X-Ray Diffraction

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Marine Mammal Biology
  • Materials Science and Engineering.

Technology Areas

  • Biotechnology
  • Microelectronics
  • Microelectronics - Microelectromechanical Systems