Pupils

Question 1

Constriction of pupils

Answer 1

Miosis. When in parasympathetic state, activated by ciliary ganglion cells.

Release of acetylcholine

Question 2

Pupil dilation

Answer 2

Mydriasis. When in sympathetic state, activated by cervical ganglion cells.

Release of noradrenaline/norepinephrine

Question 3

Acetylcholine

Answer 3

Most abundant neurotransmitter

Located in CNS, acts as modulator

Tells PNS to activate muscles

Transmits signals betw. motor nerves and skeletal muscles

Question 4

Norepinephrine

Answer 4

Released by locus coeruleus (LC)

difficult to measure in MRI (deep brain structure)
- Usually look at network activation or pupil dilation

Question 5

IAPS

Answer 5

Internnational Affective Picture System
- study w 5 types of emotion pictures which are rated based on arousal level and valance

Measured;
- Arousal level
- Pupil diameter
- SCR
- HR

Question 6

SCR

Answer 6

Skin conductance response. Controlled by sympathetic nervous system

Pupil dilation correlates with SCR, reflects same curve

Question 7

Reward system

Answer 7

VTA, Mediial forbrain bundle and Nacc

Wanting; dopamine
Liking; endorphine
reinforcement learning; dopamine