Sensory-memory-based change detection in face stimuli

Ana Susac*, Risto J. Ilmoniemi, Selma Supek

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    Detection of a change in face is a socially important skill. Both event-related potential (ERP) and magnetoencephalographic (MEG) measurements were conducted using face stimuli presented in an oddball paradigm to investigate detection of a change in face identity and facial expression. In condition 1, a nontarget deviant neutral face was presented among standard happy faces. In condition 2, the same deviant neutral face was presented with a standard neutral face of another person. The task in both conditions was silent counting of a second deviant (face with glasses). Non-target deviants elicited more negative ERP and corresponding MEG responses than standards in both conditions. This negativity was strongest at lateral posterior channels around 280 ms. Responses to the same deviant neutral face differed in two conditions. Deviance-related negativity resembled auditory mismatch negativity (MMN). Different responses to the same deviant in the two conditions suggest the existence of a sensory-memory trace for the standard to which the deviant was compared..

    Original languageEnglish
    Pages (from-to)286-291
    Number of pages6
    JournalTRANSLATIONAL NEUROSCIENCE
    Volume1
    Issue number4
    DOIs
    Publication statusPublished - Dec 2010
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Event-related potential (ERP)
    • Face identity
    • Face processing
    • Facial expression
    • Magnetoencephalography (MEG)
    • Mismatch negativity (MMN) Change detection
    • Visual oddball paradigm

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