In which condition would a normal EEG likely be observed?

In the context of neurological disorders, a normal EEG can indeed be observed in certain conditions, particularly benign Rolandic epilepsy. This is a childhood epilepsy that often presents with seizures, but during interictal periods (between seizures), the EEG may appear normal. The condition is characterized by specific seizure types that typically occur during sleep or upon waking and has a good prognosis, often resolving spontaneously by adolescence.

In contrast, other conditions such as juvenile myoclonic epilepsy and anoxia are more likely to show abnormal EEG findings. Juvenile myoclonic epilepsy usually presents with generalized spike-and-wave discharges or polyspike-and-wave discharges, which are indicative of seizure activity. Anoxia leads to changes in brain activity that can also be detected on an EEG, often showing patterns characteristic of diffuse cerebral dysfunction.

Multiple sclerosis, while it can produce a variety of symptoms and effects on the nervous system, does not typically result in a normal EEG as the disease can affect the electrical conduction of the brain, leading to detectable abnormalities.

Overall, benign Rolandic epilepsy exemplifies a condition where one might observe a normal EEG in the interictal phase, distinguishing it from the other listed conditions that are more likely to manifest with EEG abnormalities.