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Scholars Day 2008, Wednesday, April 9

Variability and Accuracy of Time Productions in Patients with Alzheimer’s Disease

Research has demonstrated that people with Alzheimer’s Disease (AD) show greater variability when producing time intervals than controls. This may be the result of the inability to focus attention on the task they are performing. This study examined time perception in adults with AD using a task that reduced the attentional demands of the participant by requiring active participation and reinforcing correct responses. For this task participants repeatedly held down a response lever for 10 to 14 s to receive a nickel. No difference was found in the variability of lever hold durations for people with or without AD. However, people with AD had lower accuracy and consistently under-produced the time intervals. This suggests that the problem with time perception for people with AD is the result of an increase in the speed of their internal clock and not necessarily from deficits in reference memory or attention.

Presenter: Victoria Jager (Undergraduate Student)
Topic: Psychology
Location: 104 Holmes
Time: 11:05 am (Session II)