Ways Of Investigating The Brain

Question 1

What does EEG stand for?

Answer 1

Electroencephalogram

Question 2

What does an EEG measure?

Answer 2

Brain activity 🧠

Question 3

What is used to measure brain activity for an EEG?

Answer 3

Electrodes that are fixed to a skull cap 💀

Question 4

When an EEG picks up unusual arrhythmic patterns, what does this indicate?

Answer 4

Neurological abnormalities such as epilepsy, tumours and sleep disorders 🧠

Question 5

What does ERP stand for?

Answer 5

Event-related potentials

Question 6

How do ERPs relate to EEGs?

Answer 6

ERP = EEG with simulus recorded - EEG without simulus

Question 7

What does fMRI stand for?

Answer 7

Functional magnetic resonance imaging 🧲

Question 8

How do fMRIs work?

Answer 8

Detecting changes in blood oxygenation and flow that occur as a result of brain activity in specific parts of the brain
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Question 9

What is a strength of fMRIs?

Answer 9

They don’t use radiation, and are therefore risk free ☢️

Question 10

What is a weakness of fMRIs?

Answer 10

It is very expensive compared to other neuroimaging techniques 💶

Question 11

Do fMRIs have good or poor temporal resolution?

Answer 11

Poor 👎🏻

Question 12

Do EEGs have good or poor temporal resolution?

Answer 12

Extremely good 👍🏻

Question 13

What is temporal resolution?

Answer 13

How quickly it can detect changes in brain activity⏱

Question 14

Do ERPs have good or poor temporal resolution?

Answer 14

Extremely good 👍🏻

Question 15

What are post-mortem examinations?

Answer 15

Analysis of a personals brain following death ⚰️

Question 16

What is a strength of EEGs?

Answer 16

They have been proved invaluable in the diagnosis of conditions such as epilepsy

Question 17

What is a weakness of EEGs?

Answer 17

Does not allow researchers to distinguish between activities originating in different but adjacent areas