week 2

Question 1

Level of analysis

Answer 1

looking at different levels of what is going on
- memory accuracy

Question 2

Neuron

Answer 2

small units that create and transmit information about what we experience and know

Question 3

cognitive neuroscience

Answer 3

study of physiological basis of cognition

Question 4

Nerve net

Question 5

communication in brain

Answer 5

is electrochemical, inside a neutron is electrical between is chemical

Question 6

how information travels in brain

Answer 6

• through presynaptic neuron comes before synapse
• postsynaptic neuron - neuron comes after synapse

Question 7

Synapse

Answer 7

gap between neurons ( neurons dont touch)

Question 8

cell body ( soma)

Answer 8

dendrite’s: branches that receive chemicals (info) from neurons

Axon terminals ad terminal buttons : if button activated by AP it stimulates process in terminal buttons
Buttons: create and release chemicals (neurotransmitters i.e dopamine, GABBA)

Question 9

Voltage meters

Answer 9

detect what’s going on
- resting potential of neuron is -70 millivolts
positive 40 is threshold

Question 10

Action potential

Answer 10

what goes in through the axon ( part of neuron) it is infused with fat and myelin sheaths surrounding it
- gaps between myelin sheaths are nods of Ranvier

Question 11

Frontal lobe

Answer 11

cortex responsible for planning, thinking, reasoning, emotional regulation

• subcortical area: basic level animals have

Question 12

pre- frontal cortex

Answer 12

newest part of brain that is highest order of cognitive processes (differentiates us from animals)

not fully developed till mid 20s

Question 13

Temporal lobe

Answer 13

auditory information
-left is language

Question 14

parietal lobe

Answer 14

space and sensory information ( smell, taste, touch, sound)

Question 15

Somatosensory cortex

Answer 15

how you feel about your body being processed ( stomachache)

Question 16

occipital lobe

Answer 16

processes visual information
- info goes from eyes through optic nerve crossing through optic chiasm ( info from left eye to right and right to left)

Question 17

Spinal cord

Answer 17

• Ascending pathway sensory info going up
• descending pathway : moto info going down

Question 18

Sensation and perception

Answer 18

Acquiring information from the environment or body
- before we assign meaning (purest form)

perception after meaning is given

Question 19

Specificity coding

Answer 19

`Representation of stimulus ( single neuron)

Question 20

population coding

Answer 20

many neurons firing ( activation of them)

Question 21

sparse coding

Answer 21

small group of neurons firing

Question 22

Wernicke’s aphasia (area)

Answer 22

affects temporal lobe
- trouble comprehending language
Fluent speech but nonsensical
- not genetic
caused by severe brain injury

Question 23

Broca’s Aphasia (Area)

Answer 23

Responsible for language
-Affects frontal lobe
- cant produce language (repeats everything)
- no problem understanding