Veering re-visited: noise and posture cues in walking without sight.

Abstract:

:Effects of sound and posture cues on veering from the straight-ahead were tested with young blind children in an unfamiliar space that lacked orienting cues. In a pre-test with a previously heard target sound, all subjects walked straight to the target. A recording device, which sampled the locomotor trajectories automatically, showed that, without prior cues from target locations, subjects tended to veer more to the side from which they heard a brief, irrelevant noise. Carrying a load on one side produced more veering to the opposite side. The detailed samples showed that, underlying the main trajectories, were alternating concave and convex (left and right) movements, suggesting stepwise changes in body position. It is argued that the same external and body-centred cues that contribute to reference-frame orientation for locomotion when they converge and concur, influence the direction of veering when the cues occur in isolation in environments that lack converging reference information.

journal_name

Perception

journal_title

Perception

authors

Millar S

doi

10.1068/p2876

keywords:

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

765-80

issue

6

eissn

0301-0066

issn

1468-4233

journal_volume

28

pub_type

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