ABPN Psychiatry and Neurology Exam 2026 – Complete Practice Test Prep

In the context of delirium, the expected EEG findings typically demonstrate generalized slow-wave activity. This pattern is characterized by a predominant presence of theta (4-7 Hz) and delta (0.5-4 Hz) waves, which reflects the underlying disturbance in cortical function associated with delirium. Such slow-wave activity is indicative of global dysfunction in brain activity, which is a common feature in various forms of encephalopathy, including delirium. The presence of these slow waves often correlates with the level of consciousness and cognitive impairment seen in patients experiencing this acute confusional state.

The other patterns listed, such as 3-per-second spike and wave activity, are more characteristic of generalized epileptic syndromes, particularly absence seizures. Normal adult drowsiness would not typically present as an EEG finding associated with delirium, as it would indicate a diminished state of consciousness without pathological significance. Right temporal spikes may indicate focal epileptogenic activity or localized brain dysfunction rather than the diffuse cerebral involvement found in delirium.