Semiology Lateralizing value (PPV) Symptomatogenic zone Mechanism Unilateral automatisms with contralateral dystonic posturing* > 95% N/A Release phenomenon / Activation Postictal nose wiping > 90%* Unknown Unknown Unilateral ictal eye blinking > 80% Unknown Unknown Ictal piloerection (goose bumps)* > 80% Unknown Unknown Last clonic jerk > 80% Brodmann areas 4 & 6 (primary motor area)  ? Exhaustion of the hemisphere of onset *In TLE. PPV: Positive Predictive Value; TLE: Temporal Lobe Epilepsy; N/A: Not Assigned.

Table 2: Localizing semiologic findings pointing to the ipsilateral location (for the epileptogenic zone).