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Lateral temporal lobe seizures arising from the temporal-parietal lobe junction may cause complex visual hallucinations. [2] In comparison to mesial temporal lobe seizures, lateral temporal lobe seizures are briefer duration seizures, occur with earlier loss of awareness, and are more likely become a focal to bilateral tonic-clonic seizure. [2]
Symptoms will vary according to where the seizure occurs. When seizures occur in the frontal lobe, the patient may experience a wave-like sensation in the head. When seizures occur in the temporal lobe, a feeling of déjà vu may be experienced. When seizures are localized to the parietal lobe, a numbness or tingling may occur.
The associated autobiographical memory impairment is, however, a more puzzling consequence of medial temporal lobe pathology on this theory. It could be that epileptiform activity originating in the medial temporal lobe has the potential to disrupt the distributed neocortical traces required to maintain detailed autobiographical memories.
Seizures in the temporal lobe Geschwind syndrome , also known as Gastaut–Geschwind syndrome , is a group of behavioral phenomena evident in some people with temporal lobe epilepsy . It is named for one of the first individuals to categorize the symptoms, Norman Geschwind , who published prolifically on the topic from 1973 to 1984. [ 1 ]
MRIs are used to look for masses or lesions in the temporal lobe of the brain, indicating possible tumors or cancer as the cause of the seizures. [2] When using a PET scan, a physician is looking to detect abnormal blood flow and glucose metabolism in the brain, which is visible between seizures, to indicate the region of origin.
A brain injury can cause seizure(s) because of the unusual amount of energy that is discharged across of the brain when the injury occurs and thereafter. A disruption of the supply of oxygen may cause damage to the temporal lobe of the brain. [35] The risk of seizure(s) from a closed head injury is about 15%. [36]