scholarly journals Theta Rhythmopathy as a Cause of Cognitive Disability in TLE

2017 ◽  
Vol 17 (2) ◽  
pp. 107-111 ◽  
Author(s):  
Tristan Shuman ◽  
Benjamin Amendolara ◽  
Peyman Golshani
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Large Scale ◽  
Theta Oscillations ◽  
Cognitive Disability ◽  
Future Directions ◽  
Significant Disability ◽  
Memory Disturbance ◽  
Hippocampal Theta

Memory difficulties are commonly associated with temporal lobe epilepsy (TLE) and cause significant disability. This article reviews the role of altered hippocampal theta oscillations and theta-gamma coupling as potential causes of memory disturbance in temporal lobe epilepsy, dissecting the potential mechanisms underlying these changes in large-scale neuronal synchronization. We discuss development of treatments for cognitive dysfunction directed at restoring theta rhythmicity and future directions for research.

P384 The role of sleep spindles in overnight verbal memory consolidation in temporal lobe epilepsy patients

2017 ◽  
Vol 128 (9) ◽  
pp. e302-e303
Author(s):  
Márta Virág ◽  
Róbert Bódizs ◽  
Ferenc Gombos ◽  
Anna Kelemen ◽  
Dániel Fabó
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Memory Consolidation ◽  
Verbal Memory ◽  
Sleep Spindles

scholarly journals The role of presurgical EEG parameters and of reoperation for seizure outcome in temporal lobe epilepsy

Seizure ◽  
2017 ◽  
Vol 51 ◽  
pp. 174-179 ◽  
Author(s):  
B. Schmeiser ◽  
J. Zentner ◽  
B.J. Steinhoff ◽  
A. Brandt ◽  
A. Schulze-Bonhage ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Seizure Outcome

scholarly journals The role of airborne volcanic ash for the surface ocean biogeochemical iron-cycle: a review

2009 ◽  
Vol 6 (4) ◽  
pp. 6441-6489 ◽  
Author(s):  
S. Duggen ◽  
N. Olgun ◽  
P. Croot ◽  
L. Hoffmann ◽  
H. Dietze ◽  
...  
Keyword(s):  
Large Scale ◽  
Volcanic Ash ◽  
Volcanic Eruptions ◽  
Research Field ◽  
Ash Deposition ◽  
Future Directions ◽  
Iron Cycle ◽  
Surface Ocean ◽  
Wide Range

Abstract. Iron is a key micronutrient for phytoplankton growth in the surface ocean. Yet the significance of volcanism for the marine biogeochemical iron-cycle is poorly constrained. Recent studies, however, suggest that offshore deposition of airborne ash from volcanic eruptions is a way to inject significant amounts of bio-available iron into the surface ocean. Volcanic ash may be transported up to several tens of kilometres high into the atmosphere during large-scale eruptions and fine ash may encircle the globe for years, thereby reaching even the remotest and most iron-starved oceanic areas. Scientific ocean drilling demonstrates that volcanic ash layers and dispersed ash particles are frequently found in marine sediments and that therefore volcanic ash deposition and iron-injection into the oceans took place throughout much of the Earth's history. The data from geochemical and biological experiments, natural evidence and satellite techniques now available suggest that volcanic ash is a so far underestimated source for iron in the surface ocean, possibly of similar importance as aeolian dust. Here we summarise the development of and the knowledge in this fairly young research field. The paper covers a wide range of chemical and biological issues and we make recommendations for future directions in these areas. The review paper may thus be helpful to improve our understanding of the role of volcanic ash for the marine biogeochemical iron-cycle, marine primary productivity and the ocean-atmosphere exchange of CO2 and other gases relevant for climate throughout the Earth's history.

scholarly journals Role of Diffusion Tensor Imaging in Detection and Lateralization of Temporal Lobe Epilepsy

2018 ◽  
Vol 86 (9) ◽  
pp. 2501-2505
Author(s):  
NERMEEN M.S. GARHY, M.D.; AMR O.M.A. AZAB, M.D. ◽  
RANIA Z. HASSAN, M.D.; ASMAA M. EBRAHEIM, M.D.
Keyword(s):  
Diffusion Tensor Imaging ◽  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Diffusion Tensor

Role of the Insula in Temporal Lobe Epilepsy Surgery Failure

2018 ◽  
pp. 271-280
Author(s):  
Vamsi Krishna Yerramneni ◽  
Alain Bouthillier ◽  
Dang Khoa Nguyen
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Epilepsy Surgery

scholarly journals Epilepsy and Ecstatic Experiences: The Role of the Insula

2021 ◽  
Vol 11 (11) ◽  
pp. 1384
Author(s):  
Fabienne Picard ◽  
Peter Bossaerts ◽  
Fabrice Bartolomei
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Mystical Experience ◽  
Focal Epilepsy ◽  
Anterior Insula ◽  
External Signal ◽  
Prediction Errors ◽  
Rare Form ◽  
The World

Ecstatic epilepsy is a rare form of focal epilepsy in which the aura (beginning of the seizures) consists of a blissful state of mental clarity/feeling of certainty. Such a state has also been described as a “religious” or mystical experience. While this form of epilepsy has long been recognized as a temporal lobe epilepsy, we have accumulated evidence converging toward the location of the symptomatogenic zone in the dorsal anterior insula during the 10 last years. The neurocognitive hypothesis for the genesis of a mental clarity is the suppression of the interoceptive prediction errors and of the unexpected surprise associated with any incoming internal or external signal, usually processed by the dorsal anterior insula. This mimics a perfect prediction of the world and induces a feeling of certainty. The ecstatic epilepsy is thus an amazing model for the role of anterior insula in uncertainty and surprise.

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