experimental techniques

Question 1

what do neuropsychological tests do?

Answer 1

how to measure brain activity and thoughts objectively

Question 2

what can neuropsychological tests measure?

Answer 2

verbal and non-verbal behaviours

Question 3

what are destruction techniques?

Answer 3

when parts of the brain are damaged to see how it influences behaviour

Question 4

what are stimulation techniques?

Answer 4

when brain activity is increased artificially and evaluated to see how behaviour changes

Question 5

what can neuroimaging be used for?

Answer 5

a basis to make inferences about brain function

Question 6

what are five examples of neuroimaging?

Answer 6

1. electroencephalogram (eeg)
2. computerized tomography (ct)
3. positron emission tomography (pet)
4. magnetic resonance imagine (mri)
5. functional magnetic resonance imaging (fmri)

Question 7

what does an electroencephalogram (eeg) do?

Answer 7

responds to very faint signals of neuronal activity and records the electrical activity of thousands of neurons

Question 8

what does an electroencephalogram look at?

Answer 8

functional aspects of what the brain is doing

Question 9

what can eeg’s also be used to study?

Answer 9

event-related potentials (erp)

Question 10

what do event-related potentials (erp) do? in what form?

Answer 10

measure neural response to specific events in the form of waves

Question 11

what is computerized tomography (ct)?

Answer 11

several 2-D x-ray images that take narrow slices of the brain, then stitched them together to create a highly detailed 3-D image

Question 12

does a ct scan give you info on activity? what does it inform us of?

Answer 12

no activity, just the structure

Question 13

what is a position emission tomography (pet)?

Answer 13

when a person is injected with a harmless radioactive tracer, which can be used to measure blood flow

Question 14

what things can a pet scan measure? (5)

Answer 14

changes in blood flow, metabolism, neurotransmitter activity, glucose and glucose-like chemicals

Question 15

what is magnetic resonance imaging (mri)

Answer 15

used to measure biological structures by measuring responses to magnetic pulses

Question 16

is an mri, ct, or pet scan the most sensitive for producing anatomical images?

Answer 16

mri

Question 17

what is functional magnetic resonance imaging (fmri)?

Answer 17

attempts to measure neural activity by detecting changes in the magnetic response of hemoglobin

Question 18

how can the changes due to the magnetic response of hemoglobin be seen?

Answer 18

hemoglobin changes as oxygen is taken up by active parts of the brain

Question 19

in an fmri, _____________ images are superimposed with ______________ images

Answer 19

functional, anatomical