title: Transcranial direct current stimulation over the parietal cortex alters bias in item and source memory tasks.
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.
authors.affiliation: Department 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.
authors.forename: Denise
authors.initials: D
authors.lastname: Pergolizzi
authors.affiliation: Department 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.
authors.forename: Elizabeth F
authors.initials: EF
authors.lastname: Chua
mesh_terms: D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology*; D003657:Decision Making / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D010296:Parietal Lobe / Q000502:physiology*; D017397:Prefrontal Cortex / Q000502:physiology; D021641:Recognition, Psychology / Q000502:physiology; D065908:Transcranial Direct Current Stimulation / Q000379:methods*; D055815:Young Adult
keywords: Decision bias; False recognition; Item memory; Parietal cortex; Source memory; tDCS