What type of seizure involves bilateral brain activity?

Bilateral brain activity is characteristic of generalized seizures. Generalized seizures originate from both hemispheres of the brain, leading to widespread and simultaneous electrical disturbances. This can manifest in various clinical forms, such as tonic-clonic seizures, absence seizures, and myoclonic seizures. In these cases, individuals often experience loss of consciousness or altered awareness due to the involvement of the entire brain rather than just a localized area.

On the other hand, focal aware seizures arise from a specific area of the brain, affecting only one hemisphere and can occur without loss of consciousness. Partial seizures are categorized into simple and complex types, where simple partial seizures involve localized activity without loss of awareness, while complex partial seizures involve alteration of consciousness but still originate from one hemisphere. Thus, these types do not demonstrate the bilateral brain activity that is definitive of generalized seizures.