PSYC 1020H Lecture Notes - Lecture 10: Sleep Spindle, Atony, Slow-Wave Sleep

• School: Trent University
• Department: Psychology
• Course: PSYC 1020H
• Professor: Neil Fournier

Document Summary

Regardless of modality, sign & speech, recruit wernicke and boca regions. Used to see if someone is alive or not. Add dye to see if there is blood in the brain (no blood = dead) To check the voltage from different points of the brain. Measures the activity of 1000s of neurons within the 1-2 mm outer surface of cortex. Only measuring structures on the outside of the brain. Zeitgeber- a stimulus that resets the biological clock (e. g. bright light) Awake sleep stage 1 2 3 4 rem sleep. Transition from wakefulness to onset of sleep. Characterized by low voltage eeg activity that will develop into sinusoidal alpha. Heart rate slows, slow rolling eye movement, hypnic jerks, hypnagogic imager. Vertex spikes appear during stage 1 sleep. Defined by waves of 12-14 hz that occur in bursts (sleep spindles) Sleep spindles as in stage 2 continue. Is asleep, deep sleep, critical for growth and development.