Sleep and Dreams Flashcards Preview

Psychology Final 2018 > Sleep and Dreams > Flashcards

Flashcards in Sleep and Dreams Deck (8):
1

Circadian rhythm

-biological clock (controlled by hypothalamus).
- Provides approximate schedule for physical processes

2

Suprachiasmatic nucleus (SCN)

(in hypothalamus) sensitive to changes in light

3

How does the Suprachiasmatic nucleus (SCN) react to little light?

SCN tells pineal gland to secrete melatonin

4

How does the Suprachiasmatic nucleus (SCN) react to more light?

SCN tells pineal gland to stop secreting melatonin

5

What is Rapid eye movement (REM) Sleep

- “Paradoxical sleep”
- Eyes move back and forth
- Heart rate, blood pressure, breathing – rapid or irregular
- Dreams
- Sleep paralysis

6

Stage 1 of N-REM

-similar to drowsiness
-Hypnic or hypnagogic jerk
-Hypnagogic hallucinations

7

Stage 2 of N-REM


– true sleep – reductions in heart rate and muscle tension

8

Stage 3/4 of N-REM

- deeply asleep, hard to awaken, disoriented when awakened
- Growth hormones released from pituitary