circadian rhythm sleep disorders

Question 1

sleep disorders

Answer 1

disturbances to typical sleeping and waking patterns

Question 2

Circadian rhythm sleep disorders

Answer 2

sleep disorders that interfere with the typical regulation of the circadian rhythm of sleep, leading to a change in the sleep-wake cycle

Question 3

Delayed sleep phase syndrome (DSPS)

Answer 3

a type of circadian rhythm sleep disorder in which sleep and waking occur later than usual

Question 4

Advanced sleep phase disorder (ASPD)

Answer 4

a type of circadian rhythm sleep disorder in which sleep and waking occur earlier than usual

Question 5

Shift work

Answer 5

an occupation that involves working at unusual hours, such as working overnight

Question 6

Bright light therapy

Answer 6

a method used to adjust a person’s circadian rhythm through exposure to a high-intensity light source

Question 7

Factors essential to successful bright light therapy

Answer 7

• must occur at the right time in order to make a person feel awake at the right time
• The intensity of the light and the length of exposure sessions must be appropriate to the person’s disorder and desired changes to their circadian rhythm
• A person should not look directly at the light, and their face should be an adequate distance away

Question 8

bright light therapy with DSPS

Answer 8

individual is exposed to the bright light source in the morning at an appropriate waking time

Question 9

bright light therapy with ASPS

Answer 9

individual is exposed to the bright light source in the evening when feeling sleepy, to act as an external cue to the suprachiasmatic nucleus and promote wakefulness

Question 10

bright light therapy with shift work

Answer 10

depends on the details and timing of an individual’s work. An individual is best to be exposed to the bright light source before beginning their shift work