Hostname: page-component-74656f9884-2dmjx Total loading time: 0 Render date: 2026-11-10T08:57:34.653Z Has data issue: false hasContentIssue false

Sensitivity to full-field visual movement compatible with head rotation: Variations with eye-in-head position

Published online by Cambridge University Press:  02 June 2009

Laurence R. Harris
Affiliation:
Department of Psychology, York University, Toronto
Lori A. Lott
Affiliation:
Department of Psychology, York University, Toronto

Abstract

Variations in velocity detection thresholds for full-field visual rotation about various axes are compatible with a simple channel-based system for coding the axis and velocity of the rotation (Harris & Lott, 1995). The present paper looks at the frame of reference for this system. The head-centered, craniotopic reference system and the retinal-based, retinotopic reference systems were separated by using eccentric eye positions. We measured the threshold for detecting full-field visual rotation about a selection of axes in the sagittal plane with the eyes held either 22½ degs up, straight ahead or 22½ degs down in the head. The characteristic features of the variation in detection thresholds did not stay stable in craniotopic coordinates but moved with the eyes and were constant in retinotopic coordinates. This suggests that the coding of head rotation by the visual system is in retinotopic coordinates.

Information

Type
Research Articles
Copyright
Copyright © Cambridge University Press 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable