Week 3

Question 1

ACh

Answer 1

• Excitatory
• voluntary motor control – deficiencies linked to AD

Question 2

Glutamate

Answer 2

Primary excitatory neurotransmitter

Question 3

Dopamine

Answer 3

• Can be excitatory OR inhibitory depending on the receptors
• Pleasure, motivation

Question 4

GABA

Answer 4

Primary inhibitory neurotransmitter

Question 5

NE

Answer 5

• Can be excitatory OR inhibitory depending on the receptors present
• Modulates awareness of outside world, esp threats

Question 6

Serotonin

Answer 6

• Inhibitory
• Happiness

Question 7

Split-brain procedure

Answer 7

• Severing of corpus callosum
• scientists know that 2 hemispheres can work together seamlessly, but only when connected

Question 8

Results of split-brain experiment w two images

Answer 8

• Different image presented to each visual field simultaneously (e.g. an X to the right, an O to the left)
• Note: visual pathways cross in the brain (part of L visual field goes to R visual cortex and vice versa)
• Speech is localized in the left brain (Broca’s area and Wernicke’s area) –> if verbally asked what they’d see, they’ll only verbally respond w what they see on the RIGHT side;