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Title: Top-down and bottom-up attention cause the ventriloquism effect with distinct electroencephalography modulations
Authors: Kumagai, Toshihiro
Mizuhara, Hiroaki  kyouindb  KAKEN_id
Author's alias: 熊谷, 俊宏
水原, 啓暁
Keywords: amplitude modulation
exogenous/endogenous attention
multimodal integration
phase shifts
theta/alpha oscillation
Issue Date: 15-Jun-2016
Publisher: Lippincott Williams and Wilkins
Journal title: NeuroReport
Volume: 27
Issue: 9
Start page: 647
End page: 651
Abstract: The ventriloquism effect is a critical phenomenon for understanding the underlying mechanisms of multisensory integration. Cross-modal spatial attention causes a distortion of sound localization, although the neural basis of the effect remains an unanswered question. We hypothesized that top-down and bottom-up visual-spatial attention causes the ventriloquism effect with different modulations of ongoing neural oscillation. To test this hypothesis, human scalp electroencephalography (EEG) was measured during a sound localization task. Top-down attention suppressed the EEG amplitude in the alpha frequency (10 Hz) over the contralateral temporal electrode sites to visual cue hemifields. Bottom-up attention shifted the EEG phase to the theta frequency (7 Hz), rather than suppressing the amplitude. Two different neural mechanisms of ongoing neural oscillation contributed toward the ventriloquism effect, with different spatial attention.
Rights: © 2016 Wolters Kluwer Health | Lippincott Williams & Wilkins
This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NCND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.
URI: http://hdl.handle.net/2433/259302
DOI(Published Version): 10.1097/WNR.0000000000000590
PubMed ID: 27128725
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