ROUTINE/SLEEP DEPRIVED ELECTROENCEPHALOGRAM (EEG) INSTRUCTIONS: 1.) REQUIRED TIME: If this is your initial visit, please arrive 15 minutes early. Allow 1 hour for the study. 2.) FOR A ROUTINE EEG: At least 6 hours of sleep is required. 3.) FOR A SLEEP DEPRIVED EEG: Less than 4 hours of sleep is required. 4.) MEDICATIONS: Take all medications as prescribed, unless otherwise directed by your doctor. 5.) MEALS AND BEVERAGES: Please avoid all caffeinated drinks (coffee, tea and soda) and chocolate. You may drink decaffeinated beverages and all other drinks. You may have meals. 6.) ILLNESS: Please reschedule your study if you are sneezing or coughing excessively due to an illness, this may adversely affect the technical quality of the study. 7.) HAIR: Prior to your examination, please ensure that your hair is washed and dried. As certain hair products may prevent the electrodes from sticking to the scalp. This includes oils, gels and hairspray. Please do not use braids, hair extensions, dreadlocks, weaves or toupees as they also prevent the electrodes stick-ing to the scalp.