Verbal behavior during epileptic seizures and postictal state
We have analyzed the characteristics of a number of verbal phenomena (ictal speech, ictal aphasia, postictal aphasia, speech arrest, vocalization) during seizures and postictal state. Indicate their significance in lateralization and localization of epileptogenic zone in partial forms of epilepsy. Proposed mechanisms of these phenomena have been described. Ictal aphasiais a valuable lateralizing sign, which indicate dominant hemisphere for language function in the brain. Speech arrest must be considered as negative motor sign, related with loss of motion of lips and tongue. Vocalization could not be regarded as good lateralizing sign, but if it is associated with sensory aura and bilateral asymmetric tonic posturing it may indicate activation of supplementary motor area. We proposed protocol for testing of patients at the time of epileptical attack to detect speech verbal signs.