BIOPSYCHOLOGY Ways Of Investigating The Brain Flashcards

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1
Q

How do fMRIs work

A

Measures changes in brain activity while a person performs a task

Detects changes in blood flow and oxygenation that indicates increased brain activity

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2
Q

What do fMRIs tell us

A

Helps us understand localisation of function

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3
Q

How do EEGs work

A

Measures electrical activity within the brain

Electrodes that are fixed to an individuals scalp using a skull cap which detects small electrical charges resulting from activity of brain cells

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4
Q

What do EEGs tell us

A

An overall account of brain activity

Can detect various types brain disorders or diagnose other disorders that influence brain activity

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5
Q

How do ERPs work

A

ERPs are very small voltage changes in brain that triggered by specific events or stimuli

Electrodes on scalp

Stimulus presented to P = researcher looks for brain activity related to stimulus

Stimulus presented many times = average response is graphed

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6
Q

What do ERPs tell us

A

Neural responses associated with specific sensory, cognitive and motor events

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7
Q

How do post mortem examinations work?

A

Analysing a persons brain after their death

Areas of damage within brain examined after death

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8
Q

What do post mortem examinations tell us

A

Can establish likely cause of disorder the person suffered from

Also show the extent of the damage

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