期刊
NEUROPSYCHOLOGIA
卷 52, 期 -, 页码 19-26出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropsychologia.2013.10.006
关键词
Perirhinal cortex; Hippocampus; Implicit memory; Conceptual priming; Recognition memory; Familiarity; Recollection
资金
- NIMH [R01 MH083734, F31 MH096346]
- NATIONAL INSTITUTE OF MENTAL HEALTH [R01MH083734, R01MH059352, F31MH096346] Funding Source: NIH RePORTER
Although it is well established that regions in the medial temporal lobes are critical for explicit memory, recent work has suggested that one medial temporal lobe subregion - the perirhinal cortex (PRC) - may also support conceptual priming, a form of implicit memory. Here, we sought to investigate whether activity reductions in PRC, previously linked to familiarity-based recognition, might also support conceptual implicit memory retrieval. Using a free association priming task, the current study tested the prediction that PRC indexes conceptual priming independent of contributions from perceptual and response repetition. Participants first completed an incidental semantic encoding task outside of the MRI scanner. Next, they were scanned during performance of a free association priming task, followed by a recognition memory test. Results indicated successful conceptual priming was associated with decreased PRC activity, and that an overlapping region within the PRC also exhibited activity reductions that covaried with familiarity during the recognition memory test. Our results demonstrate that the PRC contributes to both conceptual priming and familiarity-based recognition, which may reflect a common role of this region in implicit and explicit memory retrieval. (C) 2013 Elsevier Ltd. All rights reserved.
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