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Andrzejak RG, Kraskov A, Stoegbauer H, Mormann F, Kreuz T (2003) Bivariate surrogate techniques: Necessity, strengths, and caveats.Kreuz T, Andrzejak RG, Mormann F, Kraskov A, Stoegbauer H, Elger CE, Lehnertz K, Grassberger P (2003) Measure profile surrogates: A new method to validate the performance of epileptic seizure prediction algorithms.
2003
Andrzejak RG, Mormann F, Kreuz, T, Rieke C, Kraskov A, Elger CE, Lehnertz K (2003): Testing the null hypothesis of the nonexistence of a preseizure state. Phys. Rev. E, 67, 010901(R), preprint, abstract
Mormann F, Kreuz T, Andrzejak RG, David P, Lehnertz K, Elger CE (2003): Epileptic seizures are preceded by a decrease in synchronization. Epilepsy Res, 53, 173-185 (2003).
Mormann F, Andrzejak RG, Kreuz T, Rieke C, David P, Elger CE, Lehnertz K (2003): Automated preictal state detection based on a decrease in synchronization in intracranial electroencephalography recordings from epilepsy patients. Phys Rev E, 67, 021912 (2003).
Lehnertz K, Mormann F, Kreuz T, Andrzejak RG, Rieke C, David P, Elger CE (2003): Seizure prediction by nonlinear EEG analysis, IEEE Eng Med Biol Magazine, 57-63.
Rieke C, Mormann F, Andrzejak RG, Kreuz T, David P, Elger CE, Lehnertz K (2003): Discerning nonstationarity from nonlinearity in seizure-free and pre-seizure EEG recordings from epilepsy patients, IEEE Transactions on Biomedical Engineering, 50
2002
Rieke C, Sternickel K, Andrzejak RG, David P, Lehnertz K (2002): Measuring nonstationarity by analyzing the loss of recurrence in dynamical systems. Phys. Rev. Lett, 88, 244102. abstract
2001
Andrzejak RG, Widman G, Lehnertz K, Rieke C, David P, Elger CE (2001) : The epileptic process as nonlinear deterministic dynamics in a stochastic environment - An evaluation on mesial temporal lobe epilepsy. Epilepsy Research, 44 (2-3) 129-140. abstract
Andrzejak RG, Lehnertz K, Rieke C, Mormann F, David P, Elger CE (2001): Indications of nonlinear deterministic and finite dimensional structures in time series of brain electrical activity: Dependence on recording region and brain state. Phys. Rev. E, 64, 061907 analyzed data abstract full text article at the APS (subscription needed)
Lehnertz K, Andrzejak RG, Arnhold J, Kreuz T, Mormann F, Rieke C, Widman G and Elger CE (2001): Nonlinear EEG analysis in epilepsy: Its possible use for interical focus localization, seizure anticipation, and prevention. J. Clin. Neurophysiol. 18, 209-222.
2000
Elger CE, Widman G, Andrzejak R, Arnhold J, David P, Lehnertz K (2000): Nonlinear EEG analysis and its potential role in epileptology. Epilepsia, 41, Suppl.3, S34-S38.
1999
Lehnertz K, Widman G, Andrzejak R, Arnhold J, Elger CE (1999): Nichtlineare EEG-Analysen., Schweizer Archiv f. Neurologie and Psychiatrie, 150, 72-78.
Lehnertz K, Widman G, Andrzejak R, Arnhold J, Elger CE (1999): Is it possible to anticipate seizure onset by non-linear analysis of intracerebral EEG in human partial epilepsies?, Rev. Neurol. (Paris), 155 (6-7) 454-456.
Book chapters
Andrzejak R, Widman G, David P, Lehnertz K and Elger CE (2000):
Nonlinear deterministic dynamics in seizure free EEG epochs as an
indicator of the epileptogenic process. A comparison of three surrogate
methods. In Lehnertz K, Arnhold, J, Grassberger P, and Elger CE (Eds.)
Chaos in Brain ?, World Scientific, Singapore, 300-343. abstract
Lehnertz K, Widman G, Andrzejak R, Arnhold J, Burr W, David P, Elger CE (2000): Possible clinical and research applications of nonlinear EEG analysis in humans. In Lehnertz K, Arnhold, J, Grassberger P, and Elger CE (Eds.) Chaos in Brain ?, World Scientific, Singapore, 134-155.
Elger CE, Widman G, Andrzejak R, Dümpelmann M, Arnhold J, Grassberger P, Lehnertz K (2000): Value of nonlinear time series analysis of the EEG in neocortical epilepsies. In: Williamson, P.D., Siegel, A.M., Roberts, D.W., Thadani, V.M., Gazzaniga, M.S. (Eds.) Neocortical epilepsies. Advances in Neurology. Philadelphia: Lippincott-Raven, 317-330.
Lehnertz K, Andrzejak RG, Kreuz T, Mormann F, Rieke C, David P, Elger CE (2002): Analysis of EEG data in epilepsy, in: Nardulli G & Stramaglia S: Modelling biomedical signals, World Scientific, Singapore
Elger CE, Mormann F, Kreuz T, Andrzejak RG, Rieke C, Sowa R, Florin S, David P, Lehnertz K: (2002) Characterizing the spatio-temporal dynamics of the epileptogenic process with nonlinear EEG analysis. In: Tetzlaff R (ed.) Proceedings of the 7th IEEE International Workshop on Cellular Neural Networks and Their Applications. World Scientific, Singapore, 228-242.
2003
Andrzejak RG, Kreuz T, Mormann F, Kraskov A, Rieke C, Elger CE, Lehnertz K, Put your seizure prediction statistics to the test: The method of seizure time surrogates. Annual Meeting of the American Society against Epilepsy, Boston, USA, December 2003.
Andrzejak RG, Kraskov A, Kreuz T, Stoegbauer H, Mormann F, Lehnertz K, Grassberger P (2003) On the use of bivariate surrogates techniques in combination with nonlinear interdependence measures. International Symposium. Topical problems of nonlinear wave physics. Nizhny Novogorod-Moscow, Russia, September 2003.
Andrzejak RG, Kraskov A, Kreuz T, Stoegbauer H, Mormann F, Lehnertz K, Grassberger P (2003) Discriminating Linear Correlation and Nonlinear Interdependence by Means of Bivariate Surrogate Techniques. SIAM Conference on Applications of Dynamical Systems, Snowbird, USA, Mai 2003.
Mormann F, Kreuz T, Andrzejak RG, Rieke C, Kraskov A, Elger CE, Lehnertz K, On the predictability of epileptic seizures. Annual Meeting of the American Society against Epilepsy, Boston, USA, December 2003.
Kreuz T, Andrzejak RG, Kraskov A, Mormann F, Stoegbauer H, Grassberger P, Elger CE, Lehnertz K (2003) Time profile surrogates: A new method to validate the performance of epileptic seizure prediction algorithms. Annual Meeting of the American Society against Epilepsy, Boston, USA, December 2003.
2002
Andrzejak RG, Rieke C, Mormann F, Kreuz T, David P, Elger CE
Lehnertz K: (2002): On the influence of nonstationarity of the EEG on
the capability of nonlinear surrogate measures to characterize the
spatial distribution of the epileptogenic process.
Epilepsia 43 (Suppl. 7) 43 abstract
Andrzejak RG, Kraskov A, Kreuz T, Mormann F, Grassberger P (2002): A comparison of the performance of different synchronizaztion measures in combination with the method of bivariate surrogates. Synchrozation meeting in Saratov, Russia.
Kreuz T, Kraskov A, Andrzejak RG, Mormann F, Rieke C, Grassberger P,
Elger CE, Lehnertz K (2002): Seizure prediction: Quantifying the
performance of measures in distinguishing pre-ictal from inter-ictal
states.
Epilepsia 43 (7) 48 abstract
Kraskov A, Kreuz T, Quian Quiroga R, Grassberger P, Mormann F,
Andrzejak RG, Elger CE, Lehnertz K (2002): Comparison of two phase
synchronization analyses techniques for interictal focus lateralization
in mesial temporal lobe epilepsy.
Epilepsia 43 (7) 48 abstract
Mormann F, Kreuz T, Andrzejak RG, Rieke C, Kraskov A, David P, Elger
CE, Lehnertz K (2002): Preictal state detection in continuous
intracranial EEG recordings based on decreased phase synchronization:
problems and pitfalls.
Epilepsia 43 (7) 121abstract
Rieke C, Andrzejak RG, Mormann F, Kreuz T, David P, Elger CE
Lehnertz K (2002): The influence of nonstationarity and segmentation
size on the analysis of intracranial EEG recordings.
Epilepsia 43 (7) 49 abstract
Stoegbauer H, Yang L, Grassberger P, Andrzejak RG, Kreuz T, Kraskov
A, Elger CE, Lehnertz K (2002) Lateralization of the focal hemisphere
in mesial temporal lobe epilepsy using independent component analysis.
Epilepsia 43 (7) 51 abstract
2001
Andrzejak RG, Lehnertz K, Rocamora R, Mormann F, David P, Elger CE
(2001): Focus localization using the fraction of nonlinear determinism:
influence of sleep depth.
Epilepsia 42 (Suppl. 2) 176 abstract
Mormann F, Lehnertz K, Andrzejak RG, David P, Elger CE (2001):
Spatial shifts in phase synchronization in intracranial EEG recordings
from epilepsy patients prior to seizures.
Epilepsia 42 (Suppl. 2) 105. abstract
Andrzejak RG, Lehnertz K, Rieke C, Mormann F, Kreuz T, David P,
Elger CE (2001): Focus lateralization in mesisal temporal lobe
epilepsy: A comparison of linear and nonlinear measures.
Epilepsia 42 (Suppl. 7) 98 abstract
Rieke C, Lehnertz K, Andrzejak RG, Mormann F, Kreuz T, David P,
Elger CE (2001): Characterizing nonstationarities in the EEG of
epilepsy patients.
Epilepsia 42 (Suppl. 7) 40 abstract
Kreuz T, Kraskov A, Quian Quiroga R, Grassberger P, Andrzejak RG,
Mormann F, Rieke C, Lehnertz K, Elger CE (2001): The capability of
different interdependence measures to predict epileptic seizures.
Epilepsia 42 (Suppl. 7) 39 abstract
Mormann F, Lehnertz K, Andrzejak RG, Kreuz T, Rieke C, David P,
Elger CE (2001): Preictal state detection in intracranial EEG
recordings from epilepsy patients using the linear cross correlation
function.
Epilepsia 42 (Suppl. 7) 39 abstract
2000
Andrzejak RG, Lehnertz K, Mormann F, David P and Elger CE (2000):
Does the fraction of nonlinear determinism in the EEG increase
prior to seizures?
Epilepsia 41 (Suppl. 7) 202. abstract
Lehnertz K, Andrzejak RG, Mormann F, Kreuz T, David P and Elger, CE
(2000): Forecasting epileptic seizures: adequacy of different EEG
analysis techniques.
Epilepsia 41 (Suppl. 7) 212.
Mormann F, Lehnertz K, Andrzejak RG and Elger, CE (2000):
Characterizing preictal states by changes in phase synchronization in
intracranial EEG recordings from epilepsy patients.
Epilepsia 41 (Suppl 7) 167. abstract
Rieke C, Lehnertz K, Andrzejak RG, David P and CE Elger (2000): Nonlinearity or nonstationarity in the EEG of epilepsy patients ? Epilepsia 41 (Suppl 7) 208. abstract
Schmadel S, Mormann F, Andrzejak RG, Lehnertz K. and Ebert U (2000):
Amygdala kindling induces changes of EEG complexity and synchronization
in rats.
Epilepsia 41 (Suppl. 7) 17. abstract
1999
Andrzejak R, Widman G, David P, Lehnertz K, Elger CE (1999):
Nonlinear deterministic dynamics in seizure free EEG epochs as an
indicator of the epileptogenic process. A comparison of three surrogate
methods.
Book of abstracts of the interdisciplinary workshop Chaos in Brain ?,
March, 1999, Bonn.
Andrzejak RG, Widman G, Lehnertz K, David P, Elger CE (1999) :
Nonlinear determinism in intracranial EEG recordings allows focus
localization in neocortical lesional epilepsy.
Epilepsia 40 (Suppl.7) 171-172. abstract
Lehnertz K, Widman G, Andrzejak R, Arnhold J, David P, Elger CE (1999): Possible clinical and research applications of nonlinear EEG analysis in humans., Book of abstracts of the interdisciplinary workshop "Chaos in Brain ?", March, 1999, Bonn.
Lehnertz K, Andrzejak R, Morman F, Wegner J, Widman G, David P,
Elger CE (1999): Linear and nonlinear EEG analysis techniques for
anticipating epileptic seizures.
Epilepsia 40 (Suppl.2) 71.
Widman G, Andrzejak R, Morman F, Wegner J, Widman G, David P,
Lehnertz K, Elger CE (1999): Designing a seizure prediction system:
problems and pitfalls.
Epilepsia 40 (Suppl. 2) 16.
1998
Andrzejak RG, Widman G, Lehnertz K, David P, Elger CE (1998) :
Fraction of nonlinear determinism in intracranial EEG recordings allows
focus lateralization in mesial temporal lobe epilepsy.
Epilepsia 39 (Suppl.6) 206. abstract
Diploma thesis (in german)
Andrzejak R (1997): Anteile nichtlinearer Determinismen in Zeitreihen:
Theorie und Simulation sowie Anwendung auf hirnelektrische
Aktivität von Patienten der prächirurgischen
Epilepsiediagnostik., Diploma thesis in physics, University of Bonn.
PhD thesis (in german)
Andrzejak RG (2001) Epilepsie als eine nichtlinear deterministische
Dynamik: Eine Untersuchung hirnelektrischer Aktivität mit Methoden
der linearen und nichtlinearen Zeitreihenanalyse.
University of Bonn.
PDF files of PhD thesis:
Pages
0-19, Pages
20-39, Pages
40-59, Pages
60-79, Pages
80-99, Pages
100-125, Cover
Christian
Erich Elger
Peter
Grassberger
Alexander
Kraskov
Thomas
Kreuz
Klaus
Lehnertz
Florian
Mormann
Rodrigo Quian Quiroga
Harald
Stoegbauer
Lei
Yang
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last change: 01/SEP/03 by Ralph G. Andrzejak