What is the expected EEG activity in a patient with Down's syndrome?

In patients with Down's syndrome, the expected EEG activity often presents as normal background activity and is generally categorized as within normal limits, particularly when compared to the EEGs of individuals with other types of developmental disabilities or neurological impairment. Many individuals with Down's syndrome do not exhibit significant abnormalities on EEG. While some studies may indicate a potential for increased prevalence of epileptiform activity or other anomalies, the most common finding is that the overall brain activity remains within a normal range, consistent with option B.

This normal EEG activity can include a standard frequency pattern reflective of the patient’s age and the state of alertness, without distinctive or persistent spikes, sharp waves, or other pathological features that characterize more severe neurological disorders. Recognizing that some individuals may show variations in their EEG recordings, this typical presentation underlines why normal activity is the expected finding in this population.