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Changing pitch induced visual motion illusion

journal contribution
posted on 2023-06-08, 14:35 authored by Fumiko Maeda, Ryota Kanai, Shinsuke Shimojo
We often associate moving objects and changing pitch, e.g., falling stones with descending, and launching rockets with ascending pitch, even when these sounds do not happen in the real-world. The reason for this is unknown. Here we report an illusion in which auditory stimuli with no apparent spatial and motion information [[1–3]] alter human visual motion perception. Subjects made a two alternative forced choice (upward (Vup) or downward (Vdown) visual motion perception) while presented with two superimposed, oppositely moving gratings (experiment 1), accompanied by either an ascending or a descending pitch of pure tone, or broad-band noise (Figure 1A). Gratings with ambiguous motion accompanied by ascending pitch were more likely to be perceived as an upward motion, those accompanied by descending pitch as a downward motion, whereas noise caused no directional bias.

History

Publication status

  • Published

Journal

Current Biology

ISSN

0960-9822

Publisher

Elsevier

Issue

23

Volume

14

Page range

R990-R991

Department affiliated with

  • Psychology Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2013-03-11

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