Ways Of Studying the Brain

Question 1

what is meant by temporal resolution

Answer 1

how quickly the scanner can detect changes in brain activity

Question 2

what is meant by spatial resolution

Answer 2

the smallest feature a scanner can detect

Question 3

what are the 4 different ways of studying the brain

Answer 3

• fMRI
• EEG
• ERP
• Post Mortem

Question 4

explain how an fMRI works

Answer 4

detects changes in blood oxygenation levels. When a brain area is more active it consumes more oxygen

Question 5

explain how an EEG works

Answer 5

measures electrical activity within the brain via electrodes that are fixed to an individuals scalp. These are graphed over a period of time

Question 6

explain how an ERP works

Answer 6

statistical averaging technique which is a measure of a specific form of brainwave that relates to specific stimulus

Question 7

what how a post mortem works

Answer 7

analyse a persons brain after death

Question 8

give the spatial resolution for the 4 techniques

Answer 8

• fMRI - very high
• EEG - very poor
• ERP - very poor
• post mortem - high

Question 9

give the temporal resolution for the 4 techniques

Answer 9

• fMRI - low
• EEG - very high
• ERP - very high
• post mortem - poor