Patent ID: 7422326

Claim:
A system for determining visual field of a monkey, comprising: a head fixing unit (A) for fixing a chair ( 1 ) to be seated by the monkey and the monkey's head; an eye target display unit (B) for displaying a gazing point ( 2 ) at which the monkey is caused to fix its eye and displaying also an eye target ( 3 ) at a predetermined position within the monkey's visual field with a predetermined brightness; a gazing monitor unit (C) for monitoring the direction of the monkey's gazing; a calculating unit ( 12 ) for analyzing data; and a response lever ( 4 ) by which the monkey shows that it has recognized the eye target; wherein the head fixing unit (A) includes an attachment member ( 5 ) fixable to the top of the monkey's head, a support member ( 6 ) connectable to the attachment member, and a base member ( 7 ) for fixing the support member.