Final answer:
The most suitable technique for studying a patient's brain electrical functioning is an electroencephalography (EEG), which records brain activity via electrodes on the scalp.
Step-by-step explanation:
If a neurologist wishes to study a patient's brain and its electrical functioning, the most appropriate technique would be electroencephalography (EEG). An EEG involves the placement of electrodes on the scalp to record the brain's electrical activity. This method is especially useful when diagnosing conditions like seizures, as it helps to determine which brain regions are involved. While CT scans can be used to look for structural issues such as bleeding or tumors, EEGs are specialized for observing electrical activity.
In the case of neurological issues, conducting a proper neurological exam can help to estimate where potential damage in the nervous system may have occurred. This exam, in conjunction with tests like EEG, provides a comprehensive understanding of both function and structure within the brain, making it possible to devise the most effective therapy for the patient.