psych of perception chapter 2

Question 1

recording electrode

Answer 1

inside the fiber

Question 2

refernce electrode

Answer 2

outside the fiber

Question 3

resting potential

Answer 3

-70mV

Question 4

action potential

Answer 4

show propagated response
remain the same size regardless if stimulus intensity increases

Question 5

ions - carry an electrical charge

Answer 5

Na+ (sodiom ions) positive charge
Cl- (chlorine ions) negative charge
K+ (potassium ions) positive charge

Question 6

what makes neuron to depolorize?

Answer 6

sodium ions flow into the axon

Question 7

what makes neuron repolorize?

Answer 7

potassium flows out of the axon

Question 8

excitory transmitters

Answer 8

cause depolarization
neuron becomes more positive and the likelihood for action potential increases

Question 9

inhibitory transmitters

Answer 9

cause hyperpolarization
neuron becomes more negative and the likelihood for an action potential to occur decreases

Question 10

modularity

Answer 10

the idea that specific brain areas are specialized to respond specific types of stimuli or functions
each specific area is called a module

Question 11

distributed representation

Answer 11

the idea that the brain represents information in patterns distributed across thecortex, not just brain area
multiple modules

Question 12

structural connectivity

Answer 12

‘road map’ of fibers connecting different areas of the brain

Question 13

fMRI

Answer 13

functional magnetic resonance
measures blood flow
brain activity takes up oxygen, which binds to hemaglobin and makes it more magnetic