Audiovisual congruency and incongruency effects on auditory intensity discrimination

Xiaoli Guo; Xuan Li; Xiaoli Ge; Shanbao Tong

doi:10.1016/j.neulet.2014.10.043

Audiovisual congruency and incongruency effects on auditory intensity discrimination

Neurosci Lett. 2015 Jan 1:584:241-6. doi: 10.1016/j.neulet.2014.10.043. Epub 2014 Nov 3.

Authors

Xiaoli Guo¹, Xuan Li¹, Xiaoli Ge¹, Shanbao Tong²

Affiliations

¹ School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
² School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Med-X Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. Electronic address: stong@sjtu.edu.cn.

PMID: 25450137
DOI: 10.1016/j.neulet.2014.10.043

Abstract

This study used a S1-S2 matching paradigm to investigate the influences of visual (size) change on auditory intensity discrimination. Behavioral results showed that subjects made more errors and spent more time to discriminate change in auditory intensity when it was accompanied by an incongruent visual change, while the performance for congruent audiovisual stimuli was better especially if there is a change in auditory stimuli. Event-related potential difference waves revealed that audiovisual interactions for multimodal mismatched information processing activated the right frontal and left centro-parietal cortices around 300-400 ms post S1-onset.

Keywords: Audiovisual interaction; Auditory intensity discrimination; Congruency and incongruency effects; ERP difference waves.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acoustic Stimulation
Auditory Perception*
Discrimination, Psychological*
Evoked Potentials, Auditory
Evoked Potentials, Visual
Female
Humans
Male
Photic Stimulation
Visual Perception*
Young Adult