Neurology Physiology

Question 1

What is cerebral perfusion pressure?

Answer 1

net pressure gradient causing blood flow to the brain

Question 2

How is CPP calculated?

Answer 2

CPP= Mean arterial pressure - Intra cranial pressure

Question 3

What is non-REM stage 1 ?

Answer 3

Light sleep
Transition to this stage be associated with hypnic jerks

Question 4

What are the changes on the non-REM stage 1?

Answer 4

Theta waves

Question 5

What is non-REM stage 2 ?

Answer 5

Deeper sleep
Represents around 50% of total sleep

Question 6

What are the changes on the non-REM stage 2?

Answer 6

Sleep spindles + K-complexes

Question 7

What is non-REM stage 3 ?

Answer 7

Deep sleep
Parasomnias such as night terrors, nocturnal enuresis, sleepwalking

Question 8

What is non-REM stage 3 ?

Answer 8

Delta waves

Question 9

What occurs in REM sleep?

Answer 9

Dreaming occurs
Loss of muscle tone, erections

Question 10

What is the sequence of sleep?

Answer 10

N1 → N2 → N3 → REM

Theta → Sleep spindles/K-complexes → Delta → Beta

The Sleep Doctor’s Brain

Question 11

What receptor is blocked in myasthenia?

Answer 11

Nicotinic acetylcholine receptors
These are required for skeletal muscle activation