ways of studying brain

Question 1

4 ways

Answer 1

FMRI
post mortem
EEG
ERP

Question 2

fmri

Answer 2

detects blood flow as more active areas need more blood

Question 3

positive of fmri

Answer 3

good spatial resolution 1mm so it’s precise

Question 4

negative of fmri

Answer 4

poor temporal resolution - 1 image every few seconds

Question 5

EEG

Answer 5

22-34 electrodes that attach to a cap fitted to scalp with conductive gel. read out sum of total activation of the brain cortex under the electrode. display series of lines displaying patterns called brain waves. amplitude (size) show intensity and frequency (distance between each) shows speed

Question 6

eeg positive

Answer 6

temporal accuracy- milliseconds
cheaper than alt

Question 7

eeg negative

Answer 7

poor spatial activity as it’s a sum of a large number of neurones in the cortex
can’t detect activity deep in brian

Question 8

erp

Answer 8

uses same technique and equipment as eeg but presents a stimulus many times so it creates a smooth curve of activation. statistical averaging is the data name. waveform peaks and dips to show exactly when cognitive processes happen

Question 9

positive

Answer 9

erp allow research to isolate and study how cog processes take place in brain
good temporal resolution

Question 10

negative

Answer 10

poor spatial resolution

Question 11

post moretem

Answer 11

unusual brains dissected after death and compared with neurotypical brains.

Question 12

positive

Answer 12

high spatial resolution- microscopic down to the neuronal level

Question 13

negative

Answer 13

figure out after death for that person- Tan damage to frontal lobe

not seen as ethical