Intracranial electroencephalography reveals two distinct similarity effects during item recognition. Academic Article uri icon

Overview

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.

publication date

  • July 16, 2009

Research

keywords

  • Cerebral Cortex
  • Memory, Short-Term
  • Pattern Recognition, Visual
  • Recognition, Psychology

Identity

PubMed Central ID

  • PMC2763991

Scopus Document Identifier

  • 69049084420

Digital Object Identifier (DOI)

  • 10.1523/JNEUROSCI.1948-06.2006

PubMed ID

  • 19615982

Additional Document Info

volume

  • 1299