Accession Number:

AD0763981

Title:

Eye Movements of the Owl.

Descriptive Note:

Research paper,

Corporate Author:

DEFENCE AND CIVIL INST OF ENVIRONMENTAL MEDICINE DOWNSVIEW (ONTARIO)

Personal Author(s):

• Steinbach,Martin J.
• Money,K. E.

Report Date:

1972-08-27

Pagination or Media Count:

5.0

Abstract:

The tubular shape and tightly encapsulating orbit of the owls eye would seem to make horizontal and vertical eye rotations impossible. The amazing flexibility of the neck, allowing the head to rotate 270 degrees on the torso, would seem to make eye movements unnecessary. These two characteristics have led to the claim that the owl eye is immobile. The authors report the presence of small eye movements less than 1.5 degrees in awake, unanesthetized owls, occurring both spontaneously and elicited by visual and vestibular stimuli.

Descriptors:

• (*BIRDS
• *EYE)
• VISION
• VESTIBULAR APPARATUS
• PHYSIOLOGY
• STIMULATION(PHYSIOLOGY)
• RESPONSE(BIOLOGY)
• CANADA

Subject Categories:

• Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE