N250 ERP Correlates of the Acquisition of Face Representations across Different Images

Juergen M. Kaufmann, Stefan R. Schweinberger, A. Mike Burton

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

We used ERPs to investigate neural correlates of face learning. At learning, participants viewed video clips of unfamiliar people, which were presented either with or without voices providing semantic information. In a subsequent face-recognition task (four trial blocks), learned faces were repeated once per block and presented interspersed with novel faces. To disentangle face from image learning, we used different images for face repetitions. Block effects demonstrated that engaging in the face-recognition task modulated ERPs between 170 and 900 msec poststimulus onset for learned and novel faces. In addition, multiple repetitions of different exemplars of learned faces elicited an increased bilateral N250. Source localizations of this N250 for learned faces suggested activity in fusiform gyrus, similar to that found previously for N250r in repetition priming paradigms [Schweinberger, S. R., Pickering, E. C., Jentzsch, I., Burton, A. M., & Kaufmann, J. M. Event-related brain potential evidence for a response of inferior temporal cortex to familiar face repetitions. Cognitive Brain Research, 14, 398-409, 2002]. Multiple repetitions of learned faces also elicited increased central-parietal positivity between 400 and 600 msec and caused a bilateral increase of inferior-temporal negativity (>300 msec) compared with novel faces. Semantic information at learning enhanced recognition rates. Faces that had been learned with semantic information elicited somewhat less negative amplitudes between 700 and 900 msec over left inferior-temporal sites. Overall, the findings demonstrate a role of the temporal N250 ERP in the acquisition of new face representations across different images. They also suggest that, compared with visual presentation alone, additional semantic information at learning facilitates post-perceptual processing in recognition but does not facilitate perceptual analysis of learned faces.

Original languageEnglish
Pages (from-to)625-641
Number of pages17
JournalJournal of Cognitive Neuroscience
Volume21
Issue number4
Early online date18 Mar 2009
DOIs
Publication statusPublished - Apr 2009

Keywords

  • event-related potentials
  • brain potentials
  • unfamiliar faces
  • interhemispheric cooperation
  • name recognition
  • familiar
  • memory
  • perception
  • repetitions
  • identities

Cite this

N250 ERP Correlates of the Acquisition of Face Representations across Different Images. / Kaufmann, Juergen M.; Schweinberger, Stefan R.; Burton, A. Mike.

In: Journal of Cognitive Neuroscience, Vol. 21, No. 4, 04.2009, p. 625-641.

Research output: Contribution to journalArticle

Kaufmann, Juergen M. ; Schweinberger, Stefan R. ; Burton, A. Mike. / N250 ERP Correlates of the Acquisition of Face Representations across Different Images. In: Journal of Cognitive Neuroscience. 2009 ; Vol. 21, No. 4. pp. 625-641.
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abstract = "We used ERPs to investigate neural correlates of face learning. At learning, participants viewed video clips of unfamiliar people, which were presented either with or without voices providing semantic information. In a subsequent face-recognition task (four trial blocks), learned faces were repeated once per block and presented interspersed with novel faces. To disentangle face from image learning, we used different images for face repetitions. Block effects demonstrated that engaging in the face-recognition task modulated ERPs between 170 and 900 msec poststimulus onset for learned and novel faces. In addition, multiple repetitions of different exemplars of learned faces elicited an increased bilateral N250. Source localizations of this N250 for learned faces suggested activity in fusiform gyrus, similar to that found previously for N250r in repetition priming paradigms [Schweinberger, S. R., Pickering, E. C., Jentzsch, I., Burton, A. M., & Kaufmann, J. M. Event-related brain potential evidence for a response of inferior temporal cortex to familiar face repetitions. Cognitive Brain Research, 14, 398-409, 2002]. Multiple repetitions of learned faces also elicited increased central-parietal positivity between 400 and 600 msec and caused a bilateral increase of inferior-temporal negativity (>300 msec) compared with novel faces. Semantic information at learning enhanced recognition rates. Faces that had been learned with semantic information elicited somewhat less negative amplitudes between 700 and 900 msec over left inferior-temporal sites. Overall, the findings demonstrate a role of the temporal N250 ERP in the acquisition of new face representations across different images. They also suggest that, compared with visual presentation alone, additional semantic information at learning facilitates post-perceptual processing in recognition but does not facilitate perceptual analysis of learned faces.",
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