Sleep Physiology Exam 1 UPDATED ACTUAL and Correct Answers

Sleep Physiology Exam 1 UPDATED ACTUAL and Correct
Answers
Question: What are behavioral and physiological indicators of sleep?
Answer:
-species specific posture
-paralysis
-decrease in mobility

Question: Who is the father of sleep?
Answer:
Bill Dement

Question: Who is the grandfather of sleep?
Answer:
Natahanial Kleitman

Question: Identify the different tools used to measure sleep physiology
Answer:
-Electroencephalogram (EEG)
-Electroocculogram (EOG)
- Electromyogram (EMG)
-Respiratory Measurements
- Electrocardiogram (ECG)

Question: What do respiratory tools used to measure sleep record?
Answer:
Effort - string gate belt
wrapped around your chest as you breathe
Flow -
Oxygen levels - pulse oximeter

Question: Polysomnography
Answer:
recording multiple aspects of sleep use an EEG to record brain waves, the oxygen
level in your blood, heart rate and breathing as well as eye and leg movements during the study

Question: Differentiate between the stages of sleep based on EEG parameters:

,Answer:


Question: EEG stages of sleep - awake
Answer:
low amplitude, fast activity, beta frequency range 15-25 or 30
hertz/cycles per second

Question: EEG stages of sleep - drowsy:
Answer:


Question: EEG stages of sleep - Stage 1 (aka N1)
Answer:
lightest stage of sleep, lasts a few minutes of the night,
associated with transitions, theta activity, 4-7 cycles per second/hertz, we see vertex sharp waves
especially in the
center of the brain

Question: Which of the following is a characteristic of stage 1 sleep?
slow rolling eye movements
rapid eye movements
beta waves
delta waves
Answer:
slow rolling eye movements

Question: EEG stages of sleep - Stage 2 (aka N2)
Answer:
a part of non-REM sleep, as adults we spend 50% of
the night in this stage of sleep, background is theta, sleep spindles, K complexes, eyes are barely
moving

Question: sleep spindle
Answer:
a burst of activity, 12-14 cycles per second. initiated in the thalamus ( a sensory relay center)
primarily but also other deep centers of the brain. thalamocortico isolation

, Question: In what stage of sleep during what phenomena do thalamocortico isolations occur?
Answer:
during the sleep spindles of stage 2. inhibitory waveform as information is not sent to the cortex
during these sleep spindles.

Question: K complexes
Answer:
respond to external and internal stimulus. they have something to do with the wakeful
process. don't always wake up when you have one but these are present every-time you wake up
suddenly

Question: EEG stages of sleep - Delta Sleep aka 3-4 or N3
Answer:
frequency is in delta, 0.5-2.5 hertz, has to
be at least 75 microvolts, release of growth hormone, slow brain waves aka delta waves, eyes and
muscles are relaxed,
deepest sleep,

Question: EEG stages of sleep - REM
Answer:
low amplitude, fast activity. theta background. sawtooth waves, skeletal
muscle paralysis

Question: What is phasic REM?
Answer:
the part when you see the rapid eye movements, not required but a clear indicator
of REM stage

Question: What is the sleep cycle in adult humans?
Answer:
alternating states of sleep that occur over an ~8
hour time period. The whole cycle non-REM to REM lasts about 90 minutes

Question: Non-Rapid Eye Movement Sleep
Answer:
NREM, Stages N1-N3 or 1-4, occurs for approximately ~80% of
the night