Electroencephalographic findings of focal epilepsy resistant to treatment of internal and external temporal lobes

Epilepsy is one of the most common diseases in the brain. Determination and comparison of changes in the electroencephalographic pattern in the ictal and intercetal phases of patients with epilepsy of the internal temporal lobe and epilepsy caused by other lesions outside the temporal lobe (neocortex).

this cross-sectional study was conducted on 80 patients with internal and external temporal lobe epilepsy. Then, EEG monitoring was performed and EEG results were compared in two groups of internal and external temporal epilepsy.

There was no significant difference in the type of seizure, history of tumor or trauma or hypoxia, duration of seizure between two groups of patients (internal and external temporal lobe epilepsy) (P>0.05). The location of the beginning of the ictal wave in 52.5% of the patients was in the left temporal region and the beginning of the ictal wave in 58.75% of the patients was Slow wave, and there was no significant difference between the two groups regarding the location and wave of the beginning of the ictal.

According to the results, EEG is an appropriate method for the detection of temporal lobe epilepsy, but it does not help to differentiate the type of internal and external temporal epilepsy. To distinguish between these epilepsy, EEG alone is not helpful and requires other diagnostic methods.