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Active VisionThe Psychology of Looking and Seeing$
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John M Findlay and Iain D Gilchrist

Print publication date: 2003

Print ISBN-13: 9780198524793

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780198524793.001.0001

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VISUAL ORIENTING

VISUAL ORIENTING

Chapter:
(p.55) CHAPTER 4 VISUAL ORIENTING
Source:
Active Vision
Author(s):

John M. Findlay

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198524793.003.0004

This chapter is concerned with orienting the eye to visual targets. Research has suggested some direct links between studies of human behaviour and the underlying neurophysiology. There are two key questions. Firstly, what determines the latency of the saccade? That is the time to initiate an eye movement after the onset of the saccade target. Secondly, what determines where the saccade lands? The chapter describes the experimental paradigms that have been used to investigate these two processes as well as the underlying neurophysiological mechanisms. The chapter also includes a detailed discussion of the Findlay and Walker model of visual orienting, and illustrates how this model accounts for the behavioural evidence in a way that is consistent with findings in neurophysiology. The chapter concludes with a discussion of the development and plasticity of the oculomotor system.

Keywords:   neurophysiology, saccade latency, saccade landing position, Findlay and Walker model, plasticity

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