The aim of this study was to investigate ictal grasping (IG) behavior and to evaluate whether it characterize specific seizure types. Methods: we analyzed the video-recordings of 694 seizures in 109 consecutive patients, candidate to epilepsy surgery. Seizures with motor manifestations (n = 511) were selected and divided into four semiological groups: (a) frontal "hyperkinetic" seizures (FHS): 30 seizures, 12 patients, (b) frontal lobe seizures (FLS) other than NFHS: 228 seizures, 26 patients, (c) temporal lobe seizures (TLS): 194 seizures, 55 patients, (d) extra-frontal/extra-temporal seizures (EF/ETS): 59 seizures, 16 patients. We evaluated IG features by means of video-analysis. Results: IG was observed in 96.7% FHS (100% of patients), with a mean latency of 3 seconds, and a mean prevalence of 7.9 IG per seizure, directed to a limited number of surrounding objects or body parts. During FHS, grasping usually was preceded by reaching movement and followed by holding or pulling and was performed with both arms in an alternating fashion. In 22.4% FLS (11.5% of patients) 1-3 prolonged IGs were present, mainly directed to a fixed external point. Not repeated IG was occasionally present in TLS (10.3%, in 20% of patients) and EF/ETS (5.1%, in 12.5% of patients), with longer latency. We did not find a consistent relationship between side of hand grasping and side of ictal EEG discharge or MRI lesion. Conclusions: early, forced and repetitive IG was a typical manifestation of FHS. It had constant semiological features, similar to voluntary prehension, suggesting an ictal release of physiologic grasping behavior.
|Number of pages||3|
|Journal||Bollettino - Lega Italiana contro l'Epilessia|
|Publication status||Published - 2005|
ASJC Scopus subject areas
- Clinical Neurology