CENTER FOR SLEEP AND COGNITION
HIGH DENSITY EEG
COMPUTERIZED LEARNING TASKS
FULLY EQUIPPED SLEEP ROOMS
+ ACCESS TO GENERAL CLINICAL RESEARCH CENTER
Participants in some studies wear Actigraph watches that track movement to better estimate when they exactly fall asleep. In the above image, the areas highlighted in blue indicate extended periods of rest, suggesting sleep.
Participants in studies train in various tasks ranging from rapidly typing number sequences to navigating mazes built on the Unreal Tournament Engine. Performance on trials before and after sleep are the focus of the lab's interest.
Many studies at the lab require that participants either nap or sleep overnight at the hospital. Shown above is one of two fully equipped sleep rooms, which include bathrooms, computers, and an extension chord from the EEG cap that allows mobility.
Dream studies look at the characteristics of sleep thoughts and imagery. They also correlate dreaming about a task with sleep stages (recorded by EEG) and with subsequent improvement on the task.
High density electroencephalogram (EEG) caps record changes in voltage along the scalp at 58 points, mapping brain activity as the wearer sleeps. Most of the studies done at the Center for Sleep and Cognition use some form of EEG recording device.
Analyzing EEG data is called Polysomnography. In the above image, a brief period of rapid eye movement (REM) is highlighted. Interpreters typically mark thirty second epochs as different stages of sleep, using channels to the eyes, chin, and temples as indicators of the stage.