Conceptual Priming and Familiarity: Different Expressions of Memory during Recognition Testing with Distinct Neurophysiological Correlates
- 1 November 2010
- journal article
- research article
- Published by MIT Press in Journal of Cognitive Neuroscience
- Vol. 22 (11), 2638-2651
- https://doi.org/10.1162/jocn.2009.21341
Abstract
Familiarity and recollection are qualitatively different explicit-memory phenomena evident during recognition testing. Investigations of the neurocognitive substrates of familiarity and recollection, however, have typically disregarded implicit-memory processes likely to be engaged during recognition tests. We reasoned that differential neural responses to old and new items in a recognition test may reflect either explicit or implicit memory. Putative neural correlates of familiarity in prior experiments, for example, may actually reflect contamination by implicit memory. In two experiments, we used obscure words that subjects could not formally define to tease apart electrophysiological correlates of familiarity and one form of implicit memory, conceptual priming. In Experiment 1, conceptual priming was observed for words only if they elicited meaningful associations. In Experiment 2, two distinct neural signals were observed in conjunction with familiarity-based recognition: late posterior potentials for words that both did and did not elicit meaningful associations and FN400 potentials only for the former. Given that symbolic meaning is a prerequisite for conceptual priming, the combined results specifically link late posterior potentials and FN400 potentials with familiarity and conceptual priming, respectively. These findings contradict previous interpretations of FN400 potentials as generic signals of familiarity and show that repeated stimuli in recognition tests can engender facilitated processing of conceptual information in addition to retrieval processing that leads to the awareness of memory retrieval. The different characteristics of the electrical markers of these two types of process further underscore the biological validity of the distinction between implicit memory and explicit memory.Keywords
This publication has 47 references indexed in Scilit:
- Characterizing the ERP Old–New effect in a short‐term memory taskPsychophysiology, 2008
- The Medial Temporal Lobe and Recognition MemoryAnnual Review of Neuroscience, 2007
- Interleaving brain systems for episodic and recognition memoryTrends in Cognitive Sciences, 2006
- Multiple routes to memory: Distinct medial temporal lobe processes build item and source memoriesProceedings of the National Academy of Sciences, 2003
- An electrophysiological comparison of visual categorization and recognition memoryCognitive, Affective, & Behavioral Neuroscience, 2002
- Brain activity evidence for recognition without recollection after early hippocampal damageProceedings of the National Academy of Sciences of the United States of America, 2001
- Remembering episodes: a selective role for the hippocampus during retrievalNature Neuroscience, 2000
- Event-related potential (ERP) studies of memory encoding and retrieval: A selective reviewMicroscopy Research and Technique, 2000
- The electrophysiology of incidental and intentionalretrieval: erp oldî—¿new effects in lexical decision andrecognition memoryNeuropsychologia, 1999
- COGNITIVE NEUROSCIENCE OF HUMAN MEMORYAnnual Review of Psychology, 1998