On all nights, sensors and wires are attached to your scalp, face, shoulder, and side to measure your brain, muscle, and heart activity. We also watch your sleep with a video monitor. Part of the time you sleep in your own room and part of the time you sit awake in a dimly-lit room with a research assistant and another study participant. These samples let us detect the hormone, melatonin. You are exposed to different levels of light each night in the lab.
Some light levels are very dim and some are brighter.
The brightest level is still much lower than the level of light outside on a cloudy day. Please call the lab for further details.