Introduction to Behavioral Neuroscience Lecture 15 - Sleep PDF

Introduction to Behavioral Neuroscience PSYC 211 Lecture 15 of 24 – Sleep Chapter 11 in the textbook Professor Jonathan Britt Questions? Concerns? Please write to [email protected]  Electrophysiological Measurement of Sleep...

Introduction to Behavioral Neuroscience PSYC 211 Lecture 15 of 24 – Sleep Chapter 11 in the textbook Professor Jonathan Britt Questions? Concerns? Please write to [email protected]  Electrophysiological Measurement of Sleep Sleep research is conducted in a sleep laboratory. We measure brain activity by attaching electrodes to the scalp to record an electroencephalogram (EEG). We measure muscle activity by attaching electrodes to the chin to record an electromyogram (EMG). Electrodes are also placed near the eyes to measure eye movements via an electro-oculogram (EOG).  EEG SIGNALS DURING SLEEP Beta activity, 13–30 Hz; typical of an aroused state. It reflects desynchronous neural activity (high frequency, low amplitude oscillations) Alpha activity, 8–13 Hz; typical of awake person in a state of relaxation Theta activity, 4–8 Hz; appears intermittently when people are drowsy, and is prominent during early stages of sleep Delta activity;