Imaging Techniques

Question 0

Noninvasive
Excellent temporal resolution
Limited spatial resolution

Answer 0

Scalp EEG

Question 1

Measures hemodynamic response to neural activity
No radiation
Delayed and imprecise

Answer 1

fMRI

Question 2

Surface grid and depth electrodes in epilepsy patients

Can record or stimulate

Answer 2

Intraoperative electrophysiological recording

Question 3

Radioactive tracers injected into bloodstream

Allow imaging of metabolic activity

Answer 3

PET

Question 4

Records magnetic fields produced by electrical activity in brain
Excellent temporal resolution
More precise than EEG

Answer 4

Magnetoencephalogram (MEG)

Question 5

Induce small electrical changes in brain to temporarily deactivate or stimulate an area
Limited localization
Unclear interpretation

Answer 5

Transcranial magnetic stimulation (TMS)