A peculiar sensory sensation often preceding the onset of a seizure is called:

A peculiar sensory sensation often preceding the a set of a seizure called Aura

Aura is perceptual disturbance experienced by some with migraines or seizures before either the headache or seizure begin. It is often manifests as the perception of a straight light, an unpleasant smell or confusion thought. some people experience aura without subsequent seizure