Neural repetition suppression reflects fulfilled perceptual expectations.

Journal Article (Journal Article)

Stimulus-evoked neural activity is attenuated on stimulus repetition (repetition suppression), a phenomenon that is attributed to largely automatic processes in sensory neurons. By manipulating the likelihood of stimulus repetition, we found that repetition suppression in the human brain was reduced when stimulus repetitions were improbable (and thus, unexpected). Our data suggest that repetition suppression reflects a relative reduction in top-down perceptual 'prediction error' when processing an expected, compared with an unexpected, stimulus.

Full Text

Duke Authors

Cited Authors

  • Summerfield, C; Trittschuh, EH; Monti, JM; Mesulam, MM; Egner, T

Published Date

  • September 2008

Published In

Volume / Issue

  • 11 / 9

Start / End Page

  • 1004 - 1006

PubMed ID

  • 19160497

Pubmed Central ID

  • PMC2747248

Electronic International Standard Serial Number (EISSN)

  • 1546-1726

International Standard Serial Number (ISSN)

  • 1097-6256

Digital Object Identifier (DOI)

  • 10.1038/nn.2163


  • eng