Intracranial electroencephalography reveals two distinct similarity effects during item recognition

Marieke K. van Vugt*, Andreas Schulze-Bonhage, Robert Sekuler, Brian Litt, Armin Brandt, Gordon Baltuch, Michael J. Kahana

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

Behavioral studies of visual recognition memory indicate that old/new decisions reflect both the similarity of the probe to the studied items (probe-item similarity) and the similarities among the studied items themselves (list homogeneity) Recording intracranial electroencephalography from 1,155 electrodes across 15 patients, we examined the oscillatory correlates of probe-item similarity and homogeneity effects in short-term recognition memory for synthetic faces. Frontal areas show increases in low-frequency oscillations with both probe-item and item-item similarity, whereas temporal lobe areas show distinct oscillatory correlates for probe-item similarity and homogeneity in the gamma band We discuss these frontal low-frequency effects and the dissociation in the temporal lobe in terms of recent computational models of visual recognition memory (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)33-44
Number of pages12
JournalBrain Research
Volume1299
DOIs
Publication statusPublished - 3-Nov-2009
Externally publishedYes

Keywords

  • Oscillation
  • Recognition memory
  • Cognitive modeling
  • Similarity
  • ANTERIOR PREFRONTAL CORTEX
  • SHORT-TERM-MEMORY
  • VISUAL WORKING-MEMORY
  • MEDIAL TEMPORAL-LOBE
  • GAMMA OSCILLATIONS
  • FRONTOPOLAR CORTEX
  • DECISION-MAKING
  • INDIVIDUAL-DIFFERENCES
  • THETA-OSCILLATIONS
  • DISTINGUISH TRUE

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