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Brain Cogn. 2016 Oct;108:56-65. doi: 10.1016/j.bandc.2016.06.009. Epub 2016 Jul 28.

Transcranial direct current stimulation over the parietal cortex alters bias in item and source memory tasks.

Author information

  • 1Department of Psychology, Brooklyn College of the City University of New York, United States; Department of Psychology, The Graduate Center of the City University of New York, United States. Electronic address: pergolid@mskcc.org.
  • 2Department of Psychology, Brooklyn College of the City University of New York, United States; Department of Psychology, The Graduate Center of the City University of New York, United States. Electronic address: echua@brooklyn.cuny.edu.

Abstract

Neuroimaging data have shown that activity in the lateral posterior parietal cortex (PPC) correlates with item recognition and source recollection, but there is considerable debate about its specific contributions. Performance on both item and source memory tasks were compared between participants who were given bilateral transcranial direct current stimulation (tDCS) over the parietal cortex to those given prefrontal or sham tDCS. The parietal tDCS group, but not the prefrontal group, showed decreased false recognition, and less bias in item and source discrimination tasks compared to sham stimulation. These results are consistent with a causal role of the PPC in item and source memory retrieval, likely based on attentional and decision-making biases.

KEYWORDS:

Decision bias; False recognition; Item memory; Parietal cortex; Source memory; tDCS

PMID:
27474794
PMCID:
PMC5014655
[Available on 2017-10-01]
DOI:
10.1016/j.bandc.2016.06.009
[PubMed - in process]
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