Auditory-Visual Speech Processing (AVSP) 2010

Hakone, Kanagawa, Japan
September 30-October 3, 2010

An ERP Examination of Audiovisual Speech Perception in Japanese Younger and Older Adults

Satoko Hisanaga (1), Kaoru Sekiyama (2), Tomohiko Igasaki (3), Nobuki Murayama (3)

(1) Graduate School of Social and Cultural Sciences, Kumamoto University, Japan
(2) Faculty of Letters, Kumamoto University, Japan
(3) Graduate School of Science and Technology, Kumamoto University, Japan

We studied differences between Japanese younger (YA) and older adults (OA) by recording event-related brain potentials (ERP). Participants were asked to identify audio only (AO) and congruent audiovisual (AV) syllables as /ba/ or /ga/). We found age-related ERP changes (N1, P2, and N2 latencies) in Japanese audiovisual speech perception. Whereas the visual influence was sustained (maintained from P2 to N2) in the OA group, the influence was transient (limited only to N1) in the YA group. It seemed that the OA group’s slower auditory processing is compensated by visual information.

Index Terms: audiovisual speech perception, aging, ERP

Full Paper

Bibliographic reference.  Hisanaga, Satoko / Sekiyama, Kaoru / Igasaki, Tomohiko / Murayama, Nobuki (2010): "An ERP examination of audiovisual speech perception in Japanese younger and older adults", In AVSP-2010, paper S5-3.