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Looking and ActingVision and eye movements in natural behaviour$
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Michael Land and Benjamin Tatler

Print publication date: 2009

Print ISBN-13: 9780198570943

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780198570943.001.0001

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Locomotion on foot

Locomotion on foot

(p.100) (p.101) Chapter 6 Locomotion on foot
Looking and Acting

Michael F. Land

Benjamin W. Tatler

Oxford University Press

This chapter covers locomotion on foot, and questions such as how far ahead humans look when placing their feet on uncertain terrain, and what sources of information are used to guide locomotion. It also examines the roles of eye, head, and body movements during turns, and of the reflexes that coordinate them. In short, it addresses the role of vision in moving through the environment and avoiding hazards, as well as how the eyes, head, and body work together to get high acuity foveae to where they are needed to best serve human behaviour. It specifically deals with two common situations that are encountered in everyday life: crossing busy roads and avoiding colliding with other pedestrians. When moving through the environment, eyes, head, and body often share a common alignment. However, in many situations they do not, and flexible co-ordination is obtained by two reflexes: the vestibulo-ocular reflex, which allows the eyes to maintain direction independent of the head, and the vestibulo-collic reflex, which maintains head direction independent of the body.

Keywords:   locomotion, foot, eye movement, head movement, body movement, vision, vestibulo-ocular reflex, vestibulo-collic reflex

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