Alcohol's dissociation of implicit and explicit memory processes: implications of a parallel distributed processing
Suchismita Ray1, Marsha E Bates, Benjamin Martin Ely
1Center of Alcohol Studies, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA. shmita@rci.rutgers.edu
Abstract:
Alcohol's dissociation of implicit (unintentional) and explicit (intentional) memory processes in social drinkers was examined. It was hypothesized that an alcohol challenge would lower the percentage of words recalled and result in more retroactive interference in explicit recall tasks but would not lengthen reaction time in an implicit semantic priming task involving highly semantically similar words. Men and women completed all memory tasks in each of 2 counterbalanced sessions (alcohol challenge vs. no-alcohol) separated by 1 week. Alcohol significantly degraded processing in both explicit memory tasks, yet implicit semantic priming remained intact. A parallel distributed processing model that simulates semantic memory is presented. When this system is strongly activated, it does not appear to be altered during moderate alcohol intoxication.
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