To differentiate delirium from dementia in a 75-year-old male patient, the most appropriate diagnostic technique is: (A) Evoked EEG, (B) CT, (C) PET, (D) EEG
Answer is D. Electroencephalogram (EEG) measures electrical activity in the coex and can be useful in differentiating delirium (abnormal EEG) from dementia (usually normal EEG) Evoked EEG is EEG measured after giving a stimulus.