Abstract:
PURPOSE:To estimate magnetoencephalography (MEG) correlates of different types of aura in temporal lobe epilepsy (TLE). METHODS:MEG study was performed on 57 patients (26 male and 31 female) with TLE, whose ages ranged from 14-46 years (mean 27 years). Interictal magnetoencephalograms showing discharges were analyzed, and spike-dipole clusters were categorized into left and right inferotemporal-horizontal (IH) and superotemporal-vertical (SV) types. Auras were classified into autonomic, auditory, and psychic seizures. The correlation between the four types of interictal spike-dipole and three types of aura was analyzed using Fisher's exact probability test. RESULTS:IH type correlated with autonomic seizures (p = 0.0004), whereas SV type correlated with both auditory (p = 0.0002) and psychic seizures (p = 0.042). When subdivided into left and right, left IH type correlated with autonomic seizures (p = 0.046), but right IH type did not. Right SV type correlated with both auditory (p = 0.014) and psychic seizures (p = 0.002), but left SV did not correlate with either. Both types did not correlate with "no aura." CONCLUSIONS:Using our proposed classification of spike-dipoles, MEG distinguishes auras of mesial temporal origin from those of lateral temporal region. Furthermore, by adopting our classification, laterality of spike-dipoles is clearly demonstrated in auditory and psychic seizures.
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Fukao K,Inoue Y,Yagi Kdoi
10.1111/j.1528-1167.2010.02655.xsubject
Has Abstractpub_date
2010-09-01 00:00:00pages
1846-51issue
9eissn
0013-9580issn
1528-1167pii
EPI2655journal_volume
51pub_type
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