Spatio-temporal patterns of event-related potentials related to audiovisual synchrony judgments in older adults

Yu Man Chan, Michael Julian Pianta, Stefan Bode, Allison Maree McKendrick

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Older adults have altered perception of the relative timing between auditory and visual stimuli, even when stimuli are scaled to equate detectability. To help understand why, this study investigated the neural correlates of audiovisual synchrony judgments in older adults using electroencephalography (EEG). Fourteen younger (18-32 year old) and 16 older (61-74 year old) adults performed an audiovisual synchrony judgment task on flash-pip stimuli while EEG was recorded. All participants were assessed to have healthy vision and hearing for their age. Observers responded to whether audiovisual pairs were perceived as synchronous or asynchronous via a button press. The results showed that the onset of predictive sensory information for synchrony judgments was not different between groups. Channels over auditory areas contributed more to this predictive sensory information than visual areas. The spatial-temporal profile of the EEG activity also indicates that older adults used different resources to maintain a similar level of performance in audiovisual synchrony judgments compared with younger adults.

Original languageEnglish
Pages (from-to)38-48
Number of pages11
JournalNeurobiology of Aging
Volume55
DOIs
Publication statusPublished - Jul 2017
Externally publishedYes

Fingerprint

Dive into the research topics of 'Spatio-temporal patterns of event-related potentials related to audiovisual synchrony judgments in older adults'. Together they form a unique fingerprint.

Cite this