Ways Of Investigating The Brain Flashcards

1
Q

What is fMRI

A

Detects changes in blood flow& oxygen levels in active brain areas so more blood flow is directed to the hameodynamic response, producing 3D images to show what parts of brain are involved in mental processes

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2
Q

Strength and limitations of fMRI

A

+ risk free,non invasive
+ good resolution
- expensive
- patient has to be still

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3
Q

What is EEG

A

Measures electrical activity in the brain via electrodes on the scalp and shows brainwave patterns used for epilepsy and sleep disorders

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4
Q

Strengths and limitations of EEG

A

+ diagnoses illnesses
+ contributes to understanding of sleep stages
+ very high temporal resolution
- info is often over generalised

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5
Q

What is ERPS

A

like an EEG but more specific to sensory motor and cognitive events
Creates an event related brainwave that is only triggered by particular event

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6
Q

Strengths and limitations of ERPS

A

+ precise measurements of cognitive functions
+ excellent temporal resolution
- lack of standardised methods difficult to compare
- poor spatial resolution

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7
Q

What is post Mortem examinations

A

Examines brain after death, used on those with rare disorder, helps researchers establish cause of damage

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8
Q

Strengths and limitations of post Morton examinations

A

+ early understanding of brain processes
+ improves medical knowledge
- correlations not causes
- ethical issues, consent

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