sleep deprivation + performance

Question 1

Sleep depivation affects _______ areas of the brain

Answer 1

PFC
thalamus
parietal cortex

Question 2

we use the PFC for

Answer 2

attention
executive function /inhibition
emotional regulation

Question 3

The cascade model of arousal has 4 levels, they represent_____

Answer 3

1) have to be RESPONSIVE
2) attention networks need to be working so we can DIRECT responsiveness
3) use attention for GOAL DIRECTION inc inhibition, flexibility
4) use cognition for higher funct’s i.e. decisoon making

Question 4

How does the cascade model f arousal affect sleep?

Answer 4

Disruption to the FIRST level (arousal) causes downstream disruptions

Question 5

The difference between acute and chronic sleep deprivation is

Answer 5

acute = deprivation hour to hour 
chronic = more than 1 day

Question 6

KSS and Standford sleepiness scale are ________ measures of _______

Answer 6

SUBJECTIVE measures of alertness
KSS (rate how tired u are each hour) >6 = problem
SSC - questionnaire

Question 7

MSLT is an ________ measure of alertness, a criticism of it is________

Answer 7

OBJECTIVE - measures how fat you fall ASLEEP –> is not ecolorgically valid bc we are mostly trying to stay AWAKE

Question 8

MSLT can help identify_________

Answer 8

Day time sleepiness = narcolpesy

Question 9

The MOST sensitive measure of day time sleepiness is_______

Answer 9

occular indices - eyes

Question 10

Levator prebrae is the internal muscle controlling

Answer 10

eye OPENING

= when constricted = OPEN

Question 11

Orbicularis ocul is thicker musce in the outside, when constircted it _________

Answer 11

CLOSES eye

Question 12

Optilert devices are able to measure

Answer 12

Amplitude of opening + rate of blinking

Question 13

When drowsy, ________ characteristic is lowered

Answer 13

RATE of blinking is slower

amp is the same

Question 14

Psycholotor vigilance task is gold standard for measuring _______ attention

Answer 14

SUSTAINED

Question 15

Level of attnetion is mediated by

Answer 15

Time of day
acute/chronic sleep loss
sleep deprivation

Question 16

Thebrain area most vulnerable to sleep deprivation is

Answer 16

PFC - where most exec funct takes place

Question 17

Inhibition can be tested with

Answer 17

stroop task
stop signal task
go/no go task

Question 18

Sleep deprivation makes us more sensitive to __________ infrmation

Answer 18

NEGATIVE - respond quicker = impulsive

Question 19

Compare convergent vs divergent thinking

Answer 19

CONverget - crustallised knowledge

DIV - problem solving, creativity, worse in sleep loss

Question 20

What effect does sleep loss have on emotional regulation

Answer 20

HYPERactivity of amygdala

HYPO active PFC for moral decision making

Question 21

How do shift workers accumulate acute + chronic sleep loss?

Answer 21

Acute - dont sleep enough before first shift

chornic - don’t sleep well INBETWEEN night shifts

Question 22

circadian system is disrupted in shift workers because

Answer 22

• trying to sleep when circadian system is promoting wakefulness
• are awake when circ is signalling sleep

Question 23

even if you get enough hours of sleep, why might there still be risk assoc w shift work

Answer 23

Because of poor hygeiene, take coffee / bright lights in night

Question 24

Shift workers have a poorer capacity to deal with ACUTE sleep loss

Answer 24

TRUE