ECHOLOCATION RECONSIDERED - USING SPATIAL VARIATIONS IN THE AMBIENT SOUND FIELD TO GUIDE LOCOMOTION

Authors
ASHMEAD DH WALL RS EATON SB EBINGER KA SNOOKHILL MM GUTH DA YANG XF
Citation
Dh. Ashmead et al., ECHOLOCATION RECONSIDERED - USING SPATIAL VARIATIONS IN THE AMBIENT SOUND FIELD TO GUIDE LOCOMOTION, Journal of visual impairment & blindness, 92(9), 1998, pp. 615-632
Citations number
22
Categorie Soggetti
Rehabilitation
Journal title
Journal of visual impairment & blindness → ACNP
ISSN journal
0145482X
Volume
92
Issue
9
Year of publication
1998
Pages
615 - 632
Database
ISI
SICI code
0145-482X(1998)92:9<615:ER-USV>2.0.ZU;2-A
Abstract
This article presents an acoustical model and evidence from four exper iments that children with visual impairments use the buildup of low-fr equency sound along walls to guide locomotion. The model differs from the concept of echolocation by emphasizing sound that is ambient, rath er than self-produced, and of low, rather than high, frequency.