QEEG and neuropsychological assessment Wash your hair in the morning with a shampoo without conditioner and make sure it is dry. Do not use hair styling products (hairspray, gel, wax, etc.). Those products could interfere with the EEG measurements. Do not use make-up or greasy cream on your face. Wear comfortable clothes, for example a vest or T-shirt with v-neck (no turtleneck-sweater or other clothes with a high collar). It is important that at least 6 hours before the assessment you refrain from using alcohol, marihuana or other recreational drugs. If you feel the need to smoke tobacco, please try to smoke as little as possible and don’t smoke at least 2 hours before the assessment. It is not allowed to smoke during the assessment. These instructions apply to e-cigarettes as well. Do not consume caffeine at least 2 hours before the assessment (coffee, tea -this includes green tea-, cola, energy drinks or hot chocolate). Your cooperation on all of these points is very important. The test results will become unreliable if you don’t adhere to these guidelines. If you don’t cooperate it is possible that the QEEG needs to be rescheduled. Any costs due to this rescheduling will be on the clients account!