Investigating the Brain

Question 1

FMRI stands for

Answer 1

Functional magnetic resonance imaging

Question 2

FMRI

Answer 2

detects change in blood flow and oxygenation due to neural activity in brain area
- if high oxygenation and flow it means it is active

Question 3

FMRI AO3 +

Answer 3

• safe as no radiation
• high spatial resolution (by milimetre)

Question 4

FMRI AO3 -

Answer 4

• expensive
• low temperal resolution - 5sec time lag

Question 5

ERP stands for

Answer 5

Even related potentials

Question 6

ERP

Answer 6

What is left when all extraneous activity from EEG is filtered out by using a statistical technique leaving brainwaves triggered by an event

Question 7

ERP AO3 +

Answer 7

• neural process measure is highly specific
• high tempral resolution

Question 8

ERP AO3 -

Answer 8

• lack of standardisation so difficult to confirm findings
• extraneous material must be completely eliminates which isn’t always easy to achieve

Question 9

EEG stands for

Answer 9

Electroencephalogram

Question 10

EEG

Answer 10

Measures brain electrical activity using electrodes on skull cap
- presents brain wave patterns showing activity
- used to diagnose

Question 11

EEG AO3 +

Answer 11

• high temporal resolution (every milisecond)
• contributed to stages of sleep understanding

Question 12

EEG AO3 -

Answer 12

• produces general signal from thousands of neurons so difficult to pinpoint exact source of acitivty

Question 13

Post - mortem

Answer 13

Analyse brain after death ro establish likely cause of death or deficit experience
- compared with neurotypical brain

Question 14

Post-mortem AO3 +

Answer 14

• high application
• high spatial resolution as a detailed examination

Question 15

Post-mortem AO3 -

Answer 15

• correlation does not equal causation
• ethics - could pt give consent
• low temporal resolution