Jared P. Dempsey

 

During my time with Dr. Lee’s lab I completed a study concerning the effects of sleep on memory consolidation (see below). I also worked as the resident tech/Gowry’s official printer fixer/Handsome Tech. I helped put together this site as well as the Lab’s new imaging system and server.

I was recently accepted at Texas Tech University. I begin the Ph.D. program in Clinical Psychology this August, 2002.  See Jared's new home!!!

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Abstract

Previous studies found support for a connection between sleep and memory consolidation. Sleep deprivation has been the primary method of producing significant results. The current study sought to further the knowledge on this topic by avoiding the use of sleep deprivation. Subjects consisted of 48 adult zebra finches (Taenionpygia guttata), 24 male and 24 female. Subjects were trained on a spatial learning task. The task required them to remember the spatial location of food hidden under 1 of 7 flaps. Birds began this task at chance level (flipping 4 flaps before reaching the food). Memory was defined as learning the location of the food, flipping significantly fewer flaps than that expected by chance. Groups were placed on opposite light schedules and presented with additional trials with a different spatial pattern. It was hypothesized that subjects allowed to sleep just after performing the task would show better memory for the task in comparison to the group performing the same task, at the same time, but sleeping hours later. Results indicated no significant difference between sleep groups. Results did however indicate a significant sex difference. Males found the baited hole flipping significantly fewer flaps (P < .049) and completed a greater number of trials during the first half of data collection  (P < .018).