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Electroencephalography (EEG)
measures electrical activity
Action potential = electrical charge (which can be measured)
electrical signals are constant
records groups of thousands of cells
EEG signal changes with behaviour & stimuli, based on electricity. We get a diagram with lines
high amplitude - relaxed, tired, coma, sleep
Low amplitude, close together - awake, excited
used to: detect abnormalities, diagnose epilepsy, sleep disorders
Single-cell
???
TMS
wegsegs
tDCS
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MRI
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fMRI
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