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Visual mismatch negativity to vanishing parts of objects in younger and older adults

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  • István Sulykos
  • Zsófia Anna Gaál
  • István Czigler

Abstract

We investigated visual mismatch negativity (vMMN) to vanishing parts of continuously present objects by comparing the event-related potentials (ERPs) to infrequently (deviant) and frequently (standard) disappearing parts of the objects. This paradigm both excludes low-level stimulus-specific adaptation differences between the responses to deviants and standards, and increases the ecological validity of the stimuli. In comparison to frequently disappearing parts of the stimulus objects, infrequently vanishing parts elicited posterior negative event-related brain activity (vMMN). However, no vMMN emerged to the reappearance of the same parts of the objects. We compared the ERPs of an older and a younger sample of participants. In the 120–180 ms time period vMMN was similar in the two age groups, but in the 180–220 ms time period vMMN emerged only in the younger participants. We consider this difference as an index of more elaborate automatic processing of infrequent stimulus changes in younger adults.

Suggested Citation

  • István Sulykos & Zsófia Anna Gaál & István Czigler, 2017. "Visual mismatch negativity to vanishing parts of objects in younger and older adults," PLOS ONE, Public Library of Science, vol. 12(12), pages 1-12, December.
    • Handle: RePEc:plo:pone00:0188929
    DOI: 10.1371/journal.pone.0188929
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