- Title
- Individual differences in auditory mismatch negativity, and its relationship to working memory
- Creator
- Fulham, R. W.; Burgess, D.; Fall, S.
- Relation
- Australian Journal of Psychology Vol. 56, Issue Supplement, p. 43-43
- Relation
- http://www.informaworld.com./smpp/title~content=t713701010
- Publisher
- Taylor & Francis
- Resource Type
- journal article
- Date
- 2004
- Description
- Mismatch Negativity (MMN) is an electrophysiological signal generated by a deviant within a repetitive sequence of unattended auditory stimuli. The MMN has generators in the frontal and temporal cortex, and is assumed to index the strength of sensory memory traces. Three interference tasks examined whether MMN generators shared resources with the working memory (WM) subsystems. MMN amplitude was not affected by task-switching, articulatory suppression or visual rhyming. However, individual differences in MMN amplitude were correlated with working memory. EEG was recorded with a nose reference from 59 university students. MMN amplitude at frontal sites, but not at the mastoids was correlated with WM. Participants with the best working memory had the smallest MMNs. The strongest correlations were between MMN recorded over right frontal sites and the Brown Peterson tasks. Participants with high working memory either (a) maintain a memory trace of the deviant stimuli for longer periods of time, or (b) are less distractable.
- Subject
- mismatch negativity; electrophysiological signals; frontal cortex; temporal cortex; Brown Peterson tasks; sensory memory traces; working memory
- Identifier
- uon:2433
- Identifier
- http://hdl.handle.net/1959.13/29173
- Identifier
- ISSN:0004-9530
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