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Electroencephalographic characterization of seizure activity in the Synapsin I/II double knockout mouse
Norwegian Univ Life Sci, Dept Math Sci & Technol.
2011 (English)In: Brain Research, ISSN 0006-8993, E-ISSN 1872-6240, Vol. 1383, 270-288 p.Article in journal (Refereed) Published
Abstract [en]

We present a detailed comparison of the behavioral and electrophysiological development of seizure activity in mice genetically depleted of synapsin land synapsin II (SynDKO mice), based on combined video and surface EEG recordings. SynDKO mice develop handling-induced epileptic seizures at the age of 2 months. The seizures show a very regular behavioral pattern, where activity is initially dominated by truncal muscle contractions followed by various myoclonic elements. Whereas seizure behavior goes through clearly defined transitions, cortical activity as reflected by EEG recordings shows a more gradual development with respect to the emergence of different EEG components and the frequency of these components. No EEG pattern was seen to define a particular seizure behavior. However, myoclonic activity was characterized by more regular patterns of combined sharp waves and spikes. Where countable, the number of myoclonic jerks was significantly correlated to the number of such EEG complexes. Furthermore, some EEG recordings revealed epileptic regular discharges without clear behavioral seizure correlates. Our findings suggest that seizure behavior in SynDKO mice is not solely determined by cortical activity but rather reflects interplay between cortical activity and activity in other brain regions. (C) 2011 Elsevier BM. All rights reserved.

Place, publisher, year, edition, pages
2011. Vol. 1383, 270-288 p.
Keyword [en]
Epilepsy; Behavioral analysis; Neuroethology; Handling-induced seizure
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-68726DOI: 10.1016/j.brainres.2011.01.070ISI: 000289495600028OAI: oai:DiVA.org:kth-68726DiVA: diva2:485242
Note
QC 20120131Available from: 2012-01-28 Created: 2012-01-28 Last updated: 2017-12-08Bibliographically approved

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