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CNIM EEG questions and answers (latest update with verified solutions).
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CNIM EEG questions and answers (latest update with verified solutions).
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CNIM EEG questionsand answers 2025-
2026(latest update
with verified
solutions)
generators for EEG signals - answer Vast network of pyramidal
cells in the cerebral cortex
what % of the total metabolic rate for oxygen in the brain is used to
keep neuron's alive - answer 40%
Clinical EEG is used diagnostically to identify the following: - answer
◦Epilepsy
◦Coma
◦Tumors
◦Stroke
Intraoperative EEG patterns provide information on the following: -
answer ◦Cortical Ischemia: Drastic decrease in blood supply to the
cerebral cortex
◦Hemorrhagic stroke: caused by occlusion or rupture of a nearby
artery
, ◦Changes in brain activity
◦Sedation levels
Intraoperative EEG low amplitudes - answer 0-20 uV
Intraoperative EEG medium amplitudes - answer 20-50 uV
Intraoperative EEG high amplitudes - answer 50 uV or higher
Delta frequency - answer 0.1-4 Hz
Theta frequency - answer 4-8Hz
Alpha frequency - answer 8-13 Hz
Beta frequency - answer 13-30 Hz
Relationship between amplitude and frequency - answer as
frequency increases amplitudes decrease
how many recording electrodes need to be placed over each
hemisphere - answer at least 3
what Physiological effects of anesthetics will have an indirect effect
on EEG patterns. - answer ◦Arterial Blood Flow
◦Intracranial Pressure
◦Cerebral Perfusion
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