Final answer:
Generalized seizures are the type that involves both hemispheres of the brain. They can cause convulsions and loss of consciousness and are treated with anticonvulsant medications or, in severe cases, brain surgery.
Step-by-step explanation:
The type of seizure that involves both hemispheres of the brain is a generalized seizure. Unlike focal or partial seizures, which are limited to one area of the brain, generalized seizures affect neurons throughout both hemispheres. This can result in a variety of symptoms, including convulsions and loss of consciousness. Generalized seizures may be further classified into subtypes, such as tonic-clonic (formerly known as grand mal) seizures, absence (or petit mal) seizures, and more.
Epilepsy can occur as a result of a brain injury, disease, or disorder such as an intellectual disability or Autism Spectrum Disorder (ASD). It can also have genetic and environmental causes. Treatment options for those with epilepsy include anticonvulsant medications and, in severe cases, brain surgery. In certain surgical procedures for epilepsy, such as the corpus callosum cut for treating split-brain, profound insights into the functions of the hemispheres can be gained.