April 13: Peihua Qiu, University of Minnesota

UNIVERSITY OF MINNESOTA

SEMINAR

School of Statistics
College of Liberal Arts

Statistical Model Building for a Rat Sleep Dataset

Peihua Qiu
School of Statistics
University of Minnesota

Thursday, April 13, 2000
4:00-5:00 PM, Room 170 Physics
Social at 3:30 PM in Room 300 Ford Hall

Abstract

We developed a statistical model for rat sleep-wake behavior over the 24-hour day which could be used for animals exposed to shorter cycles of light and dark. Rat behavior was classified either as wake or sleep as determined by analysis of electrophysiological data. The proposed model consists of three parts: the first two explain cyclic effects relating to the lighting conditions, whereas the last part reflects any acyclic effect. Hypothesis tests were conducted on the magnitude of the parts. The model also accounts for correlated errors. At the end of the talk, I will briefly discuss several other models motivated by this dataset. This is joint research with professors Richard Chappell, William Obermeyer and Ruth Benca.