Citation

Brimijoin WO, Akeroyd MA. Iperception 2012; 3(3): 179-182.

Affiliation

MRC Institute of Hearing Research (Scottish Section), Glasgow Royal Infirmary, 16 Alexandra Parade, Glasgow G31 2ER, UK; email: owen@ihr.gla.ac.uk.

Copyright

(Copyright © 2012, SAGE Publishing)

DOI

10.1068/i7173sas

PMID

23145279

PMCID

PMC3485843

Abstract

We used a dynamic auditory spatial illusion to investigate the role of self-motion and acoustics in shaping our spatial percept of the environment. Using motion capture, we smoothly moved a sound source around listeners as a function of their own head movements. A lowpass filtered sound behind a listener that moved in the direction it would have moved if it had been located in the front was perceived as statically located in front. The contrariwise effect occurred if the sound was in front but moved as if it were behind. The illusion was strongest for sounds lowpass filtered at 500 Hz and weakened as a function of increasing lowpass cut-off frequency. The signals with the most high frequency energy were often associated with an unstable location percept that flickered from front to back as self-motion cues and spectral cues for location came into conflict with one another.

Language: en