Abstract:
:To evaluate the effect of age at various conditioned stimulus (CS)-unconditioned stimulus (US) intervals, 144 young, middle-aged, and older adults were tested on eyeblink classical conditioning at CS-US intervals of 500, 1,000, or 1,500 ms. Reaction time, response timing, motor learning, declarative memory, and attention were assessed to identify correlates of conditioning at various CS-US intervals. Previously reported middle-aged and older adults were impaired at a 400-ms CS-US interval, but the addition of 100 ms to the CS-US interval in this study enabled equal conditioning in middle-aged and young adults. At a 1,000-ms CS-US interval, older adults remained significantly impaired. It was only at the 1,500-ms CS-US interval that conditioning was equal for the 3 age groups. Measures of reaction time, timing, and motor learning were not correlated systematically with conditioning. Whereas the results of age differences at various CS-US intervals were clear and striking, patterns of relationships among neuropsychological and conditioning variables were not consistent in indicating sources of age differences.
journal_name
Neuropsychologyjournal_title
Neuropsychologyauthors
Woodruff-Pak DS,Jaeger ME,Gorman C,Wesnes KAdoi
10.1037//0894-4105.13.1.90subject
Has Abstractpub_date
1999-01-01 00:00:00pages
90-102issue
1eissn
0894-4105issn
1931-1559journal_volume
13pub_type
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