Abstract:
PURPOSE:To study the mechanisms of startle-induced supplementary sensorimotor area (SSMA) seizures. METHODS:We present a patient investigated with indwelling subdural grid electrodes covering both the SSMA and the dorsolateral frontal lobe. RESULTS:We found a simultaneous seizure onset in the right dorsolateral premotor cortex and the right SSMA. High-resolution magnetic resonance imaging (MRI) showed a small subcortical lesion adjacent to the right SSMA. The patient became seizure free after resection of the lesion and the ictal-onset zone. CONCLUSIONS:We conclude that an extended region of abnormally excitable tissue within the frontal lobe could facilitate the generation of startle-induced seizures. We speculate that a widespread epileptogenic zone could help to explain why some patients with SSMA or dorsolateral frontal lobe seizures are more likely to have startle-induced seizures.
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Serles W,Leutmezer F,Pataraia E,Olbrich A,Gröppel G,Czech T,Baumgartner Cdoi
10.1111/j.1528-1157.1999.tb00813.xsubject
Has Abstractpub_date
1999-07-01 00:00:00pages
1031-5issue
7eissn
0013-9580issn
1528-1167journal_volume
40pub_type
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