Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

The role of prediction in head-free pursuit and vestibuloocular reflex suppression

Barnes, G R and Grealy, M A (1992) The role of prediction in head-free pursuit and vestibuloocular reflex suppression. Annals of the New York Academy of Sciences, 656. pp. 687-94. ISSN 0077-8923

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

In a recent experiment, the predictive mechanisms of the head-fixed ocular pursuit reflex were revealed by using the technique of repeated transient stimulation to show the changes in the temporal characteristics of the response.' Subjects were instructed to follow the motion of a constant-velocity target during repeated brief periods of stimulation that were separated by periods of darkness. Smooth eye velocity was observed to build up to an asymptotic level over the first three or four presentations of the target, while simultaneously becoming more phase advanced with respect to the onset of target illumination. When the target suddenly and unexpectedly changed velocity or frequency, an inappropriate predictive eye velocity trajectory was initiated that was highly correlated in peak velocity and timing with the characteristics of the preceding part of the stimulus. We have now used the same technique to examine the response during head-free pursuit of a moving target in order to establish whether the same predictive mechanisms govern the coordination of head and eye movements.

Item type: Article
ID code: 29130
Keywords: darkness, eye movements, head, humans, movement, photic stimulation, vestibulo-ocular, time factors, vision, ocular, Psychology
Subjects: Philosophy. Psychology. Religion > Psychology
Department: Faculty of Humanities and Social Sciences (HaSS) > School of Psychological Science and Health > Psychology
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 04 Apr 2011 12:38
    Last modified: 12 Mar 2012 11:23
    URI: http://strathprints.strath.ac.uk/id/eprint/29130

    Actions (login required)

    View Item