Ways of studying the brain

Question 1

fMRIs AO1 and AO3s explain!

Answer 1

AO1:
- measures blood flow
- haemodynamic response
- neurons
- energy glucose oxygen
- deoxygenated

AO3: Poor Temporal Resolution Compared to Other Methods (1-4 secs). unable to predict high accuracy -> conclusions abt neural ctivity hard -> inability to quickly detect changes limits theoretical presicion -> poor representation

AO3: AO3: High Spatial Resolution
(1-2mm). opposite

Question 2

EEG/ ERP everything

Answer 2

• EEG scanners measure electrical activity through electrodes attached to the scalp.
• Information is processed in the brain as electrical activity in the form of nerve impulses
• Small electrical charges are detected by the electrodes and graphed over a period of time, indicating the level of activity.
• There are 4 wave type patterns: alpha, beta, theta and delta.
• Can detect illnesses like epilepsy and sleep disorders like insomnia

ERP - A stimulus is presented to a ppt e.g, a picture or sound and the researcher looks for activity related it that stimulus
- The stimulus is presented many times and an average response is graphed (averaging).
- Latency is the time interval between the presentation of the stimulus and the response (lag)

AO3: High Temporal Resolution Compared to Other Methods (1-10 ms). able to predict high accuracy -> conclusions abt neural ctivity easy -> able to quickly detect changes heightens theoretical presicion -> good representation

AO3: AO3: Low Spatial Resolution
. opposite

Question 3

Post mortem ao1s n 3s explain!

Answer 3

• broca n wernicke
• iversion examined schizophrenic, dopamine, limbic system
• anatomical, neurochemical aspects

AO3 confounding (-)
Any medication taken, age, length of time between death and post-mortem examination

c+e, iv, accuracy, perhaps multiple brains w patterns?

AO3- Disorders (+)

iverson 1979 schizophrenics, dopamine, limbic

link -> diagnose -> treatment -> life quality -> practical value and utility