OPSC OCS 2019 · Question 98 of 99
General Studies
An electroencephalogram ( EEG ) is a test that detects electrical activity in your brain using small, metal discs (electrodes) attached to your scalp. Your brain cells communicate via electrical impulses and are active all the time, even when you're asleep.
Source: OPSC OCS Prelims 2019 GS Paper-I; answers per hemunda.com unofficial key
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