13.3 Flashcards

Sleep Stages and Dreaming

1
Q

What is REM sleep (R-sleep)?

A

Faster brain-wave pattern displayed by the neocortical EEG record during sleep, accompanied by atonia and rapid eye movement; stage of sleep where dreams mostly commonly occur

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is non-REM (NREM) sleep (N-sleep)?

A

Slow-wave sleep associated with rhythms having slower waves with larger amplitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the five stages of sleep?

A

Waking, NREM 1 (sleep onset), NREM 2 (asleep), NREM 3 (deep sleep), REM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In waking state, what kind of brain waves does an EEG show? EMG? EOG?

A

EEG - beta waves (alpha when eyes closed and relaxed)
EMG - muscles active
EOG - eyes move

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a beta rhythm?

A

Fast brain-wave activity pattern associated with a waking EEG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is an alpha rhythm?

A

Large, extremely regular brain waves with a frequency ranging from 7 to 11 Hz; found in most people when they are relaxed with eyes closed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where in the brain are alpha waves generated?

A

Visual (occipital) cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In NREM1 sleep, what kind of brain waves does an EEG show? EMG? EOG?

A

EEG - low-amplitude, mixed frequency - includes theta waves
EMG - muscles have tone
EOG - eyes can be rolling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

In NREM 2 sleep, what kind of brain waves does an EEG show? EMG? EOG?

A

EEG - theta waves with sleep spindles and K-complexes
EMG - muscles have tone
EOG - eyes not moving

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are sleep spindles?

A

High frequency, medium amplitude waves seen in NREM 2 sleep; associated with memory consolidation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are K-complexes?

A

Large amplitude waves seen in NREM 2 sleep; associated with suppression of behavioral activity; inhibits waking/arousal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In NREM 3 sleep, what kind of brain waves does an EEG show? EMG? EOG?

A

EEG - delta rhythms
EMG - muscles have tone
EOG - eyes do not move

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are delta rhythms?

A

Slow brain-wave activity pattern associated with deep sleep

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

In REM sleep, what kind of brain waves does an EEG show? EMG? EOG?

A

EEG - beta rhythm
EMG - atonia; can have some twitching and reflexes
EOG - rapidly moving eyes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How does body temperature change over the course of a night’s sleep?

A

It decreases over the first half of the night and increases over the second half of the night as REM cycles become longer and more frequent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How does REM sleep change over the lifetime?

A

Periods of REM sleep are high in infancy, increase during growth spurts and pregnancy (but not as frequent as in infancy), and decreases with age.

17
Q

What happens to our body in NREM sleep?

A

Body temperature decreases, heart rate and blood pressure decrease, body weight decreases

18
Q

What is restless leg syndrome?

A

A disorder in which people experience unpleasant sensations in the legs (and sometimes arms), often accompanied by periodic leg movements

19
Q

What happens to the body during REM sleep?

A

Body temperature stops being regulated, atonia but sometimes there are twitches

20
Q

In what sleep state do vivid dreams occur?

21
Q

In what sleep state to non-vivid dreams occur that are easily forgotten?

A

NREM sleep

22
Q

What is the manifest content of dreams, according to Freud?

A

The actual dream - what we remember occurring

23
Q

What is the latent content of dreams, according to Freud?

A

The true, hidden meaning of the dream

24
Q

What is the bottom-up approach to interpreting dreams?

A

Activation-synthesis theory

25
What is activation-synthesis theory?
States that during a dream, the cortex is bombarded by random signals form the brainstem. These signals produce a pattern of waking EEG and some parts of the cortex generate fragmented images from personal memory stores in response to the excitation. The dreamer comes up with the storyline after they wake. Dreams have no meaning
26
What is the top-down approach to dream interpretation?
Coping theory
27
What does coping theory state?
Dreams are biologically adaptive and lead to enhanced coping strategies for threatening life events.
28
What is lucid dreaming?
When the dreamer is aware of their dream as they dream; Knows they are dreaming.
29
The five point classification of sleep based on EEG patterns divides sleep into _____, ______, ______, _____, and ______.
Waking; NREM 1; NREM 2; NREM 3; REM
30
A polygraph can be used to record three common measures of sleep. R-sleep is characterized by eye movement, as recorded by the ________; atonia, recorded by the _______; and waking activity, recorded by the ________
EOG, EMG, EEG
31
Sleepers experience about _____ R-sleep periods each night, with the duration of each period getting _______ as sleep progresses
five; longer
32
What major factor makes interpreting dreams difficult?
Interpreting dreams is difficult because it is possible that the interpreter will impose their own explanation, or spin, on the dreams