Imagery, encoding, and retrieval of information from memory: Some specific encoding-retrieval changes in Huntington's disease

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Abstract

Used mixed lists of 10 high-imagery and 10 low-imagery words as stimuli in a prompted, free-recall experiment. On each trial, only words not recalled on the previous trial were presented again as stimuli. Normal controls recalled more words on each test of recall than did 8 41–53 yr old patients with Huntington's disease. Controls remembered more high-imagery words after fewer presentation trials and could recall them with greater consistency than low-imagery words. Patients with Huntington's disease required far more trials to remember words, never recalled all 20 words, and did not differentiate high- and low-imagery words with respect to their recall probability. Results indicate that these patients, unlike controls, cannot consistently retrieve responses that were recalled previously. Findings are discussed in terms of the relationship between encoding and retrieval processes. (17 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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