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- Title
Light-induced inhibition in a delayed matching task with rhesus monkeys: Effects of point of illumination during the delay.
- Authors
TAKAHASHI, MASAHARU
- Abstract
Using a delayed matching-to-sample task with samples of color, two experiments investigated the effects of light presented during a delay interval on matching accuracy in two monkeys. In Experiment 1, 5 s of light during a delay interval of 24 s produced deficits in matching accuracy (retroactive inhibition), and placement of 5 s of light at the end of a 24-s delay tended to lead to slightly larger deficits than placement at the beginning (the beginning-end effect). These findings were replicated in Experiment 2. The pooled data from the two experiments indicated that both effects were significant. Additionally, it was shown in Experiment 2 that performances were better on trials with a 24-s delay with 5-s illumination at the beginning than on trials with a 5-s delay filled with illumination. These results seem to be more in line with a theoretical mechanism in which illumination produces retroactive inhibition by making memory traces temporarily inaccessible, and partial recovery of accessibility of the memory trace occurs during a period of darkness following exposure to illumination.
- Publication
Japanese Psychological Research, 1996, Vol 38, Issue 3, p146
- ISSN
0021-5368
- Publication type
Article
- DOI
10.1111/j.1468-5884.1996.tb00019.x