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Neural generators of psychogenic seizures: Evidence from intracranial and extracranial brain recordings

Arzy, Shahar; Halje, Pär LU ; Schechter, Daniel S.; Spinelli, Laurent; Seeck, Margitta and Blanke, Olaf (2014) In Epilepsy & Behavior 31. p.381-385
Abstract
Psychogenic seizures (PSs) convincingly mimic seizure phenomena but with no underlying epileptic activity. However, not much is known about their neurophysiological basis. We had the rare opportunity to analyze intracranial brain recordings of PSs occurring besides epileptic seizures (ESs), which identified distinct frequency changes over the parietal cortex. For further validation, we applied topographic frequency analysis to two other patients who presented PSs and ESs during long-term monitoring. The analysis revealed a power decrease in the theta band at the posterior parietal cortex in all three patients during PSs but not during ESs. These changes may reflect disturbed self-referential processing associated with some PSs. (C) 2013... (More)
Psychogenic seizures (PSs) convincingly mimic seizure phenomena but with no underlying epileptic activity. However, not much is known about their neurophysiological basis. We had the rare opportunity to analyze intracranial brain recordings of PSs occurring besides epileptic seizures (ESs), which identified distinct frequency changes over the parietal cortex. For further validation, we applied topographic frequency analysis to two other patients who presented PSs and ESs during long-term monitoring. The analysis revealed a power decrease in the theta band at the posterior parietal cortex in all three patients during PSs but not during ESs. These changes may reflect disturbed self-referential processing associated with some PSs. (C) 2013 Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Psychogenic seizures, Frequency analysis, Intracranial recording, Theta, rhythm, EEG
in
Epilepsy & Behavior
volume
31
pages
381 - 385
publisher
Elsevier
external identifiers
  • wos:000330192700068
  • scopus:84892992408
ISSN
1525-5069
DOI
10.1016/j.yebeh.2013.10.017
language
English
LU publication?
yes
id
4573b000-ff8e-4a92-8856-cfb0b590729a (old id 4318521)
date added to LUP
2014-07-01 07:46:31
date last changed
2017-01-01 03:09:55
@article{4573b000-ff8e-4a92-8856-cfb0b590729a,
  abstract     = {Psychogenic seizures (PSs) convincingly mimic seizure phenomena but with no underlying epileptic activity. However, not much is known about their neurophysiological basis. We had the rare opportunity to analyze intracranial brain recordings of PSs occurring besides epileptic seizures (ESs), which identified distinct frequency changes over the parietal cortex. For further validation, we applied topographic frequency analysis to two other patients who presented PSs and ESs during long-term monitoring. The analysis revealed a power decrease in the theta band at the posterior parietal cortex in all three patients during PSs but not during ESs. These changes may reflect disturbed self-referential processing associated with some PSs. (C) 2013 Elsevier Inc. All rights reserved.},
  author       = {Arzy, Shahar and Halje, Pär and Schechter, Daniel S. and Spinelli, Laurent and Seeck, Margitta and Blanke, Olaf},
  issn         = {1525-5069},
  keyword      = {Psychogenic seizures,Frequency analysis,Intracranial recording,Theta,rhythm,EEG},
  language     = {eng},
  pages        = {381--385},
  publisher    = {Elsevier},
  series       = {Epilepsy & Behavior},
  title        = {Neural generators of psychogenic seizures: Evidence from intracranial and extracranial brain recordings},
  url          = {http://dx.doi.org/10.1016/j.yebeh.2013.10.017},
  volume       = {31},
  year         = {2014},
}