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Demetrios Velis

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Robert J Lamberts; Sergio Laranjo; Isabel Rocha; Josemir W. Sander; Stiliyan N Kalitzin; Demetrios N Velis; Roland D Thijs
Postictal generalized EEG suppression is not associated with periictal cardiac autonomic instability in people with convulsive seizures.
Marc Koppert; Demetrios N Velis; Fernando Lopes da Silva; Stiliyan Kalitzin; Max A Viergever
Reactive control of epileptiform discharges in realistic computational neuronal models with bistability.
Steven Claus; Fernando H Lopes da Silva; Demetrios N Velis; Max A Viergever; Stiliyan Kalitzin
High frequency spectral components after secobarbital: the contribution of muscular origin--a study with MEG/EEG.

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2013: Robert J Lamberts; Sergio Laranjo; Isabel Rocha; Josemir W. Sander; Stiliyan N Kalitzin; Demetrios N Velis; Roland D Thijs
Postictal generalized EEG suppression is not associated with periictal cardiac autonomic instability in people with convulsive seizures.
Epilepsia 2013;54(3):523-9.
2013: Marc Koppert; Demetrios N Velis; Fernando Lopes da Silva; Stiliyan Kalitzin; Max A Viergever
Reactive control of epileptiform discharges in realistic computational neuronal models with bistability.
International journal of neural systems 2013;23(1):1250032.
2012: Steven Claus; Fernando H Lopes da Silva; Demetrios N Velis; Max A Viergever; Stiliyan Kalitzin
High frequency spectral components after secobarbital: the contribution of muscular origin--a study with MEG/EEG.
Epilepsy research 2012;100(1-2):132-41.
2012: Edwin van Dellen; Demetrios N Velis; Irene H M Ris-Hilgersom; Menno M Schoonheim; Cornelis J Stam; Johannes C Baayen; Philip C de Witt Hamer; Linda Douw; Jan J Heimans; Arjan Hillebrand; Martin Klein; Jaap C Reijneveld
MEG network differences between low- and high-grade glioma related to epilepsy and cognition.
PloS one 2012;7(11):e50122.
2011: Stiliyan Kalitzin; Marcus Koppert; George Petkov; Demetrios N Velis; Fernando Lopes da Silva
Computational model prospective on the observation of proictal states in epileptic neuronal systems.
Epilepsy & behavior : E&B 2011;22 Suppl 1():S102-9.
2010: Stiliyan N Kalitzin; Demetrios N Velis; Fernando H Lopes da Silva
Stimulation-based anticipation and control of state transitions in the epileptic brain.
Epilepsy & behavior : E&B 2010;17(3):310-23.
2010: Petra J van Houdt; Pauly P W Ossenblok; Paul A J M Boon; Frans S S Leijten; Demetrios N Velis; Cornelis J Stam; Jan C de Munck
Correction for pulse height variability reduces physiological noise in functional MRI when studying spontaneous brain activity.
Human brain mapping 2010;31(2):311-25.
2010: Linda Douw; Edwin van Dellen; Johannes C Baayen; Martin Klein; Demetrios N Velis; Willem C J Alpherts; Jan J Heimans; Jaap C Reijneveld; Cornelis Stam
The lesioned brain: still a small-world?
Frontiers in human neuroscience 2010;4():174.
2009: Edwin van Dellen; Linda Douw; Johannes C Baayen; Jan J Heimans; Sophie C Ponten; W Peter Vandertop; Demetrios N Velis; Cornelis Stam; Jaap C Reijneveld
Long-term effects of temporal lobe epilepsy on local neural networks: a graph theoretical analysis of corticography recordings.
PloS one 2009;4(11):e8081.
2007: Stiliyan Kalitzin; Jaime Parra; Demetrios N Velis; Fernando Lopes da Silva
Quantification of unidirectional nonlinear associations between multidimensional signals.
IEEE transactions on bio-medical engineering 2007;54(3):454-61.
2007: Demetrios N Velis; Perrine Plouin; Jean Gotman; Fernando Lopes da Silva
Recommendations regarding the requirements and applications for long-term recordings in epilepsy.
Epilepsia 2007;48(2):379-84.
2006: Piotr Suffczynski; Fernando Lopes da Silva; Jaime Parra; Demetrios N Velis; Brigitte M Bouwman; Clementina van Rijn; Peter Van Hese; Paul Boon; Houman Khosravani; Miron Derchansky; Peter Louis Carlen; Stiliyan Kalitzin
Dynamics of epileptic phenomena determined from statistics of ictal transitions.
IEEE transactions on bio-medical engineering 2006;53(3):524-32.
2005: Piotr Suffczynski; Fernando Lopes da Silva; Jaime Parra; Demetrios N Velis; Stiliyan Kalitzin
Epileptic transitions: model predictions and experimental validation.
Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society 2005;22(5):288-99.
2005: Fernando H Lopes da Silva; Jaime Parra Gomez; Demetrios N Velis; Stiliyan Kalitzin
Phase clustering of high frequency EEG: MEG components.
Clinical EEG and neuroscience : official journal of the EEG and Clinical Neuroscience Society (ENCS) 2005;36(4):306-10.
2005: Stiliyan Kalitzin; Demetrios N Velis; Piotr Suffczynski; Jaime Parra; Fernando Lopes da Silva
Electrical brain-stimulation paradigm for estimating the seizure onset site and the time to ictal transition in temporal lobe epilepsy.
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2005;116(3):718-28.
2005: Demetrios N Velis
Proposal for electroencephalogram standardization in aircrew selection.
Epilepsy & behavior : E&B 2005;6(1):27-30.
2005: José Maria Fernandes; António Martins da Silva; Geertjan Huiskamp; Demetrios N Velis; Ilonka Manshanden; Jan De Munck; Fernando Lopes da Silva; João Paulo Silva Cunha
What does an epileptiform spike look like in MEG? Comparison between coincident EEG and MEG spikes.
Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society 2005;22(1):68-73.
2004: Steven G Coleshill; Colin Binnie; Robin G Morris; Gonzalo Alarcón; Walter van Emde Boas; Demetrios N Velis; Andrew Simmons; Charles E Polkey; C W M van Veelen; Peter C van Rijen
Material-specific recognition memory deficits elicited by unilateral hippocampal electrical stimulation.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2004;24(7):1612-6.
2003: D Van 't Ent; Ilonka Manshanden; Pauly Ossenblok; Demetrios N Velis; Jan De Munck; J P A Verbunt; Fernando Lopes da Silva
Spike cluster analysis in neocortical localization related epilepsy yields clinically significant equivalent source localization results in magnetoencephalogram (MEG).
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2003;114(10):1948-62.
2003: Fernando Lopes da Silva; Wouter Blanes; Stiliyan Kalitzin; Jaime Parra; Piotr Suffczynski; Demetrios N Velis
Dynamical diseases of brain systems: different routes to epileptic seizures.
IEEE transactions on bio-medical engineering 2003;50(5):540-8.
2003: Jaime Parra; Stiliyan Kalitzin; J Iriarte; Wouter Blanes; Demetrios N Velis; Fernando Lopes da Silva
Gamma-band phase clustering and photosensitivity: is there an underlying mechanism common to photosensitive epilepsy and visual perception?
Brain : a journal of neurology 2003;126(Pt 5):1164-72.
2003: Fernando Lopes da Silva; Wouter Blanes; Stiliyan Kalitzin; Jaime Parra; Piotr Suffczynski; Demetrios N Velis
Epilepsies as dynamical diseases of brain systems: basic models of the transition between normal and epileptic activity.
Epilepsia 2003;44 Suppl 12():72-83.
2002: Stiliyan Kalitzin; Jaime Parra; Demetrios N Velis; Fernando Lopes da Silva
Enhancement of phase clustering in the EEG/MEG gamma frequency band anticipates transitions to paroxysmal epileptiform activity in epileptic patients with known visual sensitivity.
IEEE transactions on bio-medical engineering 2002;49(11):1279-86.
2002: Stiliyan Kalitzin; Wojciech Zbijewski; Jaime Parra; Demetrios N Velis; Ilonka Manshanden; Fernando Lopes da Silva
Correlation-based alignment of multichannel signals and application to paroxysmal events.
IEEE transactions on bio-medical engineering 2002;49(9):1068-70.
2000: Jaime Parra; Demetrios N Velis
[New developments in clinical neurophysiology: magnetoencephalography. Contributions of magnetoencephalography to the study of epilepsy].
Revista de neurologia 2000;30(4):364-70.
1999: M J van der Heyden; Demetrios N Velis; BP Hoekstra; Jan Pieter M Pijn; Walter van Emde Boas; C W M van Veelen; P C van Rijen; Fernando Lopes da Silva; J DeGoede
Non-linear analysis of intracranial human EEG in temporal lobe epilepsy.
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 1999;110(10):1726-40.
1999: Pauly Ossenblok; M Fuchs; Demetrios N Velis; E Veltman; Jan Pieter M Pijn; Fernando H Lopes da Silva
Source analysis of lesional frontal-lobe epilepsy.
IEEE engineering in medicine and biology magazine : the quarterly magazine of the Engineering in Medicine & Biology Society 1999;18(3):67-77.
1998: GJ Brekelmans; Walter van Emde Boas; Demetrios N Velis; Fernando Lopes da Silva; Peter C van Rijen; C W M van Veelen
Comparison of combined versus subdural or intracerebral electrodes alone in presurgical focus localization.
Epilepsia 1998;39(12):1290-301.
1998: GJ Brekelmans; Demetrios N Velis; C W M van Veelen; Peter C van Rijen; Fernando H Lopes da Silva; Walter van Emde Boas
Intracranial EEG seizure-offset termination patterns: relation to outcome of epilepsy surgery in temporal lobe epilepsy.
Epilepsia 1998;39(3):259-66.
1997: Fernando Lopes da Silva; Jan Pieter M Pijn; Demetrios N Velis; Peter Nijssen
Alpha rhythms: noise, dynamics and models.
International journal of psychophysiology : official journal of the International Organization of Psychophysiology 1997;26(1-3):237-49.
1997: Jan Pieter M Pijn; Demetrios N Velis; M J van der Heyden; J DeGoede; C W M van Veelen; Fernando Lopes da Silva
Nonlinear dynamics of epileptic seizures on basis of intracranial EEG recordings.
Brain topography 1997;9(4):249-70.
1992: Jan Pieter M Pijn; Demetrios N Velis; Fernando Lopes da Silva
Measurement of interhemispheric time differences in generalised spike-and-wave.
Electroencephalography and clinical neurophysiology 1992;83(2):169-71.
1992: Bernard Sadzot; R M Debets; Pierre Maquet; C W M van Veelen; Eric Salmon; Walter van Emde Boas; Demetrios N Velis; Alexander C van Huffelen; Georges Franck
Regional brain glucose metabolism in patients with complex partial seizures investigated by intracranial EEG.
Epilepsy research 1992;12(2):121-9.
1990: Dorothée G A Kasteleijn-Nolst Trenité; A M Smit; Demetrios N Velis; J Willemse; Walter van Emde Boas
On-line detection of transient neuropsychological disturbances during EEG discharges in children with epilepsy.
Developmental medicine and child neurology 1990;32(1):46-50.
1990: C W M van Veelen; R M Debets; A C van Huffelen; Walter van Emde Boas; Colin Binnie; W Storm van Leeuwen; Demetrios N Velis; A van Dieren
Combined use of subdural and intracerebral electrodes in preoperative evaluation of epilepsy.
Neurosurgery 1990;26(1):93-101.
1990: R M Debets; C W M van Veelen; Pierre Maquet; Alexander C van Huffelen; Walter van Emde Boas; Bernard Sadzot; J Overweg; Demetrios N Velis; D Dive; Georges Franck
Quantitative analysis of 18/FDG-PET in the presurgical evaluation of patients suffering from refractory partial epilepsy. Comparison with CT, MRI, and combined subdural and depth. EEG.
Acta neurochirurgica. Supplementum 1990;50():88-94.
1990: Alexander C van Huffelen; Hans VAN ISSELT; C W M van Veelen; P P van Rijk; A M van Bentum; D Dive; Pierre Maquet; Georges Franck; Demetrios N Velis; Walter van Emde Boas
Identification of the side of epileptic focus with 123I-Iomazenil SPECT. A comparison with 18FDG-PET and ictal EEG findings in patients with medically intractable complex partial seizures.
Acta neurochirurgica. Supplementum 1990;50():95-9.