<prompt> To differentiate delirium from dementia in a 75-year-old male patient, the most appropriate diagnostic technique isEvoked EEGCTPETEEG  <response>: 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. 