PSYCH 101 Lecture Notes - Lecture 18: Night Terror, Delta Wave, Theta Wave
Document Summary
Beta waves: eeg recordings show a pattern of beta waves when you"re awake and alert. Alpha waves: when you close your eyes, feeling relaxed and drowsy. Stage 1: a form of light sleep from which you can easily be awakened. Stage 2: sleep spindles (periodic one- to two-second bursts of rapid brain-wave activity) begin to appear. Stage 3: regular appearance of very slow (0. 5 to 2 cycles per second) and large delta waves. Stage 4: delta waves dominate the eeg pattern. Body relaxed, activity in various parts of brain has decreased, hard to awaken. Within 60-90 minutes of going to sleep, you will have completed a cycle of states 1-2-3- Rem (rapid eye movements) sleep (paradoxical sleep): every half minute or so, bursts of muscular activity caused the sleepers" eyeballs to vigorously move back and forth beneath their eyelids. Found by eugene aserinsky and nathaniel kleitman. Men have penile erections and women experience vaginal lubrication.
