A neurologist believes that Derik may have epilepsy.To confirm this diagnosis, the neurologist needs to record the overall electrical activity in Derik's brain.The best way for the neurologist to obtain this information would be to use:

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An EEG is the best choice for recording the overall electrical activity in Derik's brain and detecting any abnormal brain activity that may indicate epilepsy. CT scans and PET scans are imaging techniques that can provide detailed pictures of the brain, but they do not measure electrical activity directly. Brain lesioning is a surgical procedure that involves deliberately damaging a specific area of the brain and is not used for diagnosing epilepsy.

A Neurologist Believes That Derik May Have Epilepsy