Publications - Florian Mormann

 
Journal articles    (h-index=12)
  • Mormann F, Kornblith S, Quian Quiroga R, Kraskov S, Cerf M, Fried I, Koch C. Latency and selectivity of single neurons indicate hierarchical processing in the human medial temporal lobe. J Neurosci (in press)
  • Mormann F, Osterhage H, Andrzejak R, Weber B, Fernández G, Fell J, Elger C, Lehnertz K. Independent delta/theta rhythms in the human hippocampus and entorhinal cortex. Front Hum Neurosci 2:3  doi:10.3389/neuro.09.003.2008 (2008)     pdf
  • Döhler F,  Mormann F, Weber B, Elger CE, Lehnertz K. A cellular neural network based method for classification of magnetic resonance images: towards an automated detection of hippocampal sclerosis. J Neurosci Meth 170:324-331 (2008)
  • Osterhage H, Mormann F, Wagner T, Lehnertz K. Detecting directional coupling in the human epileptic brain: limitations and potential pitfalls. Phys Rev E 77:011914 (2008)
  • Mormann F, Koch C. The Neural Correlates of Consciousness. Scholarpedia 2:1740 (2007)
  • Osterhage H, Mormann F, Staniek M, Lehnertz K. Measuring synchronization in the epileptic brain: A comparison of different approaches. Int J Bifurcat Chaos 17:3539-3544 (2007)
  • Feldt S, Osterhage H, Mormann F, Lehnertz K, Zochowski M. Inter-network and intra-network communications during bursting dynamics: applications to seizure prediction. Phys Rev E 76:021920 (2007)
  • Axmacher N, Mormann F, Fernández G, Cohen MX, Elger CE, Fell J. Sustained neural activity patterns during working memory in the human medial temporal lobe. J Neurosci 27:7807-7816 (2007)
  • Osterhage H, Mormann F, Wagner T, Lehnertz K. Measuring the directionality of coupling: Phase versus state space dynamics and application to EEG time series. Int J Neural Syst 17:139-148 (2007)
  • Mormann F, Fernández G, Klaver P, Weber B, Elger CE, Fell J. Influence of hippocampal sclerosis on declarative memory formation: an intracranial ERP study. Neuroreport 18:317-321 (2007)     pdf
  • Lehnertz K, Mormann F, Osterhage H, Müller A, Chernihovskyi A, Staniek M, Krug D, Bialonski S, Elger CE.  State-of-the-art of seizure prediction. J Clin Neurophysiol 24:147-153 (2007)
  • Mormann F, Andrzejak RG, Elger CE, Lehnertz K. Seizure prediction: The long and winding road. Brain 130:314-333 (2007)     pdf

  • Kreuz T, Mormann F, Andrejak RG, Kraskov A, Lehnertz K, Grassberger P. Measuring synchronization in coupled model systems: a comparison of different approaches. Physica D 225:29-42 (2007)

  • Fell J, Fernández G, Klaver P, Axmacher N, Mormann F, Haupt S, Elger CE. Rhinal-hippocampal coupling during declarative memory formation: dependence on item characteristics. Neurosci Lett 407:37-41 (2006)

  • Mormann F, Elger CE, Lehnertz K. Performance of a seizure warning algorithm based on the dynamics of intracranial EEG (Comment letter). Epilepsy Res 71:241-242 (2006)     pdf

  • Axmacher N, Mormann F, Fernández G, Fell J. Memory formation by neuronal synchronization. Brain Res Rev  52:170-182 (2006)

  • Weber B, Wellmer J, Schür S, Dinkelacker V, Ruhlmann J, Mormann F, Axmacher N, Elger CE, Fernández G. Presurgical language fMRI in patients with drug-resistant epilepsy: Effects of task performance. Epilepsia 47:880-886 (2006)

  • Andrzejak RG, Mormann F, Widman G, Kreuz T, Elger CE, Lehnertz K. Improved spatial characterization of the epileptic brain by focusing on nonlinearity. Epilepsy Res 69:30-44 (2006)

  • Weber B, Hoppe C, Faber J, Axmacher N, Fliessbach, Mormann F, Weis S, Ruhlmann J, Elger CE, Fernández G. Association between scalp hair-whorl direction and hemispheric language dominance. Neuroimage 30:539-543 (2006)

  • Mormann F, Elger CE, Lehnertz K. Seizure anticipation: from algorithms to clinical practice. Curr Opin Neurol 19:187-193 (2006)     pdf

  • Müller A, Osterhage H, Sowa R, Andrzejak RG, Mormann F, Lehnertz K. A distributed computing system for multivariate time series analyses of multichannel neurophysiological data. J Neurosci Meth 152:190-201 (2006)

  • Weber B, Wellmer J, Reuber M, Mormann F, Weis S, Urbach H, Ruhlmann J, Elger CE, Fernández G. Left hippocampal pathology is associated with atypical language lateralization in patients with focal epilepsy. Brain 129:346-351 (2006)

  • Chernihovskyi A, Mormann F Mueller M, Elger CE, Baier G, Lehnertz K. EEG analysis with nonlinear excitable media. J Clin Neurophysiol 22:314-329 (2005)

  • Mormann F, Fell J, Axmacher N, Weber B, Lehnertz K, Elger CE, Fernández G. Phase/amplitude reset and theta-gamma interaction in the human medial temporal lobe during a continous word recognition memory task; Hippocampus 15:890-900 (2005)     pdf

  • Mormann F, Andrzejak RG, Elger CE, Lehnertz K. Seizure anticipation: Do mathematical measures correlate with video-EEG evaluation? (Comment letter). Epilepsia 46:1335-1336 (2005)     pdf

  • Sowa R, Chernihovskyi A, Mormann F, Lehnertz K. Estimating phase synchronization in dynamical systems using Cellular Neural Networks. Phys Rev E 71:061926 (2005)

  • Mormann F, Kreuz T, Rieke C, Andrzejak RG, Kraskov A, David P, Elger CE, Lehnertz K. On the predictability of epileptic seizures. Clin Neurophysiol 116:569-587 (2005)     pdf

  • Kreuz T, Andrzejak RG, Mormann F, Kraskov A, Stögbauer H, Elger CE, Lehnertz K, Grassberger P. Measure profile surrogates: A new method to validate the performance of epileptic seizure prediction algorithms. Phys Rev E 69:061915 (2004)

  • Rieke C, Andrzejak RG, Mormann F, Lehnertz K. Improved statistical test for nonstationarity using recurrence time statistics. Phys Rev E 69:046111 (2004)

  • Andrzejak RG, Kraskov A, Stögbauer H, Mormann F, Kreuz T. Bivariate surrogate techniques: Necessity, strengths, and caveats. Phys Rev E 68:066202 (2003)

  • Rieke C, Mormann F, Andrzejak RG, Kreuz T, David P, Elger CE, Lehnertz K. Discerning nonstationarity from nonlinearity in seizure-free and pre-seizure EEG recordings from epilepsy patients. IEEE Trans Biomed Eng 50:634-639 (2003)

  • Mormann F, Andrzejak RG, Kreuz T, Rieke C, David P, Elger CE, Lehnertz K. Automated preictal state detection based on a decrease in synchronization in intracranial electroencephalography recordings from epilepsy patients. Phys Rev E 67:021912 (2003)     pdf

  • Mormann F, Kreuz T, Andrzejak RG, David P, Lehnertz K, Elger CE. Epileptic seizures are preceded by a decrease in synchronization. Epilepsy Res 53:173-185 (2003)     pdf

  • Lehnertz K, Mormann F, Kreuz T, Andrzejak RG, Rieke C, David P, Elger CE. Seizure prediction by nonlinear EEG analysis. IEEE Eng Med Biol 22:57-63 (2003)

  • Andrzejak RG, Mormann F, Kreuz T, Rieke C, Kraskov A, Elger CE, Lehnertz K. Testing the null hypothesis of the non-existence of a pre-seizure state. Phys Rev E 67:010901 (2003)

  • Andrzejak RG, Lehnertz K, Mormann F, Rieke C, David P, Elger CE. 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 (2001)

  • Lehnertz K, Andrzejak RG, Arnhold J, Kreuz T, Mormann F, Rieke C, Widman G, Elger CE. Nonlinear EEG analysis in epilepsy: its possible use for interictal focus localization, seizure anticipation, and prevention. J Clin Neurophysiol 18:209-222 (2001)

  • Mormann F, Lehnertz K, David P, Elger CE. Mean phase coherence as a measure for phase synchronization and its application to the EEG of epilepsy patients. Physica D 144:358-369 (2000)     pdf
Book chapters and Proceedings
  • Mormann F, Lehnertz K, Elger CE. "Preictal" Precursors of Epileptic Seizures. In: Lüders H, Najm I, Bingaman W (eds.) Textbook of Epilepsy Surgery. Informa Healthcare (in press)
  • Döhler F, Chernihovskyi A, Mormann F, Elger CE, Lehnertz K. Detecting structural alterations in the brain using a Cellular Neural Network based classification of magnetic resonance images. In: Tavsanoglu V, Arik S (eds.) Proceedings of the 10th IEEE International Workshop on Cellular Neural Networks and Their Applications. IEEE-Press, pp. 297-300 (2006)
  • Andrzejak R, Kreuz T, Mormann F, Lehnertz K and Elger CE. Surrogate time series improve the capability of nonlinear measures to characterize the epileptic process. In: Klonowski (ed.) Simplicity behind complexity. Pabst Science Publishers, Berlin, pp. 360-366 (2004)
  • Sowa R, Mormann F, Chernihovskyi A, Florin S, Elger CE, Lehnertz K. Estimating synchronization in brain electrical activity from epilepsy patients with cellular neuronal networks. In: Roska T, Gili M, Shi B, Zarandy A (eds.) Proceedings of the 8th IEEE International Workshop on Cellular Neural Networks and Their Applications. Amulett’98 Kft, Budapest, Hungary (2004)
  • Elger CE, Mormann F, Kreuz T, Andrzejak RG, Rieke C, Sowa R, Florin S, David P, Lehnertz K. 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, pp. 228-242 (2002)
  • Lehnertz K, Andrzejak RG, Kreuz T, Mormann F, Rieke C, David P, Elger CE. Analysis of EEG data in epilepsy. In: Nardulli G, Stramaglia S (eds.) Modelling biomedical signals. World Scientific, Singapore, pp. 17-27 (2002)
Abstracts
  • Mormann F, Quian Quiroga R, Kraskov A, Cerf M, Fried I, Koch C. Dynamics of selective single neurons in the human MTL in a visual working memory task. Abstract for the Annual Meeting of the Society for Neuroscience in San Diego (2007).
  • Von Oertzen TJ, Mormann F, Reichmann K, Urbach H, Biersack HJ, Elger CE. Prospective use of SISCOM in presurgical evaluation. Epilepsia 47 (4), 80 (2006)
  • Dohler F, Weber B, Mormann F, Elger CE, Lehnertz K. Detecting mesial temporal lobe sclerosis using a cellular neural network based classification of magnetic resonance images. Epilepsia 47 (4), 67 (2006)
  • Mormann F. Responsive (closed-loop) stimulation, is it really feasible? Epilepsia 47 (3), 241 (2006)
  • Weber B, Mormann F, Reinartz A, Fliessbach K, Elger C. Z-score transformation of individual voxel-intensity-distribution improves detection of structural abnormalities in MR-images. Epilepsia 47 (3), 157 (2006)
  • Axmacher N, Mormann F, Fernandez G, Cohen MX, Elger CE, Fell J. Increased working memory demands recruit mediotemporal networks: A combined intracranial EEG and fMRI study. Int J Psychophysiol 61 (3), 308-309 (2006)
  • Wellmer J, Weber B, Mormann F, Weis S, Klaver P, Urbach H, Reul J, Ruhlmann J, Elger CE, Fernandez G. Increasing the validity of functional MRI for presurgical language lateralization: proposal for an algorithm, Klin Neurophysiol 37, 99 (2006)
  • Axmacher N, Mormann F, Fernandez G, Elger CE, Fell J. Working memory recruits mediotemporal networks: A combined intracranial EEG adn fMRI study. Klin Neurophysiol 37, 20 (2006)
  • Mormann F, Andrzejak RG, Elger CE, Lehnertz K. Focus lateralization in temporal lobe epilepsy: Measuring focal driving in the EEG. Epilepsia 46 (8), 268 (2005)
  • Osterhage H, Mormann F, Andrzejak RG, Elger CE, Lehnertz K. Focus lateralization in temporal lobe epilepsy: Comparison of different synchronization measures. Epilepsia 46 (8), 320 (2005)
  • Mormann F, Kraskov A, Kreuz T, Andrzejak RG, Osterhage H, Elger CE, Lehnertz K. Seizure prediction: Influence of EEG band-pass filtering on the predictive performance of synchronization measures. Epilepsia 45 (7), 62-63 (2004)
  • Andrzejak RG, Mormann F,  Kreuz T, Widman G, Elger CE, Lehnertz K. Nonlinearity: the key to a successful characterization of the spatial distribution of the epileptic process. Epilepsia 45 (7), 66 (2004)
  • Kreuz T, Mormann F, Kraskov A, Andrzejak RG, Grassberger P, Elger CE, Lehnertz K. Measuring synchronization and directionality in EEG time series from epilepsy patients: An application to seizure prediction. Epilepsia 45 (7), 243-244 (2004)
  • Osterhage H, Mormann F, Andrzejak RG, Elger CE, Lehnertz K. Spatial synchronization maps from intracranial EEG recordings allow differentiation of anatomically and functionally distinct brain structures. Epilepsia 45 (7), 245-246 (2004)
  • Sowa R, Mormann F, Chernihovskyi A, Niederhoefer C, Tetzlaff R, Elger CE, Lehnertz K. Seizure prediction: Measuring EEG phase synchronization with cellular neural networks. Epilepsia 45 (7), 244 (2004)
  • von Oertzen TJ, Hundt F, Mormann F, Specht C, Ruhlmann J, Elger CE. Voxel based morphometry (VBM) with high contrast MRI compared to normal MRI: a methodical study. Epilepsia 45 (7), 294 (2004)
  • Mormann F, Kreuz T, Andrzejak RG, Rieke C, Kraskov A, Elger CE, Lehnertz K. On the predictability of seizures. Epilepsia 44 (9), 172 (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. Epilepsia 44 (9), 172 (2003)
  • Kreuz T, Andrzejak RG, Kraskov A, Mormann F, Stoegbauer H, Grassberger P, Elger CE, Lehnertz K. Time profile surrogates: A new method to validate the performance of seizure prediction algorithms. Epilepsia 44 (9), 231 (2003)
  • Osterhage H, Mormann F, Kreuz T, Elger CE, Lehnertz K. Synchronization and interdependence in intracranial EEG recordings from epilepsy patients: A comparative study. Epilepsia 44 (9), 232 (2003)
  • Mormann F, Kreuz T, Andrzejak RG, Rieke C, Kraskov A, David P, Elger CE, Lehnertz K. Preictal state detection in continuous intracranial EEG recordings based on decreased phase synchronization: problems and pitfalls. Epilepsia 43 (7), 121 (2002)
  • Andrzejak RG, Rieke C, Mormann F, Kreuz T, David P, Elger CE Lehnertz K. 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 (7), 43 (2002)
  • Kraskov A, Kreuz T, Quian Quiroga R, Grassberger P, Mormann F, Andrzejak RG, Elger CE, Lehnertz K. Comparison of two phase synchronization analyses techniques for interictal focus lateralization in mesial temporal lobe epilepsy. Epilepsia 43 (7), 48 (2002)
  • Kreuz T, Kraskov A, Andrzejak RG, Mormann F, Rieke C, Grassberger P, Elger CE, Lehnertz K. Seizure prediction: Quantifying the performance of measures in distinguishing pre-ictal from inter-ictal states. Epilepsia 43 (7), 48 (2002)
  • Mormann F, Lehnertz K, Andrzejak RG, Kreuz T, Rieke C, David P, Elger CE. Preictal state detection in intracranial EEG recordings from epilepsy patients using the linear cross correlation function. Epilepsia 42 (7), 39 (2001)
  • Andrzejak RG, Lehnertz K, Rieke C, Mormann F, Kreuz T, David P, Elger CE. Focus lateralization in mesial temporal lobe epilepsy: A comparison of linear and nonlinear measures. Epilepsia 42 (7), 98 (2001)
  • Rieke C, Lehnertz K, Andrzejak RG, Mormann F, Kreuz T, David P, Elger CE. Characterizing nonstationarities in the EEG of epilepsy patients. Epilepsia 42 (7), 40 (2001)
  • Kreuz T, Kraskov A, Quian Quiroga R, Grassberger P, Andrzejak RG, Mormann F, Rieke C, Lehnertz K, Elger CE: The capability of different interdependence measures to predict epileptic seizures. Epilepsia 42 (7), 39 (2001)
  • Kraskov A, Kreuz T, Quian Quiroga R, Grassberger P, Mormann F, Lehnertz K, Elger CE. Phase synchronization using continuous Wavelet Transform of the EEG for interictal focus localizatiopn in mesial temporal lobe epilepsy. Epilepsia 42 (7), 38 (2001)
  • Mormann F, Lehnertz K, Andrzejak RG, David P, Elger CE. Spatial shifts in phase synchronization in intracranial EEG recordings from epilepsy patients prior to seizures. Epilepsia 42 (2), 105 (2001)
  • Andrzejak RG, Lehnertz K, Rocamora R, Mormann F, David P, Elger CE. Focus localization using the fraction of nonlinear determinism: influence of sleep depth. Epilepsia 42 (2), 176 (2001)
  • Mormann F, Lehnertz K, Andrzejak RG, Elger CE. Characterizing preictal states by changes in phase synchronization in intracranial EEG recordings from epilepsy patients. Epilepsia41 (7), 167 (2000)
  • Andrzejak RG, Lehnertz K, Mormann F, David P, Elger CE. Does the  fraction of nonlinear determinism in the EEG increase prior to seizures?. Epilepsia 41 (7), 202 (2000)
  • Lehnertz K, Andrzejak RG, Mormann F, Kreuz T, David P, Elger CE. Forecasting epileptic seizures: adequacy of different EEG analysis techniques. Epilepsia 41 (7), 212 (2000)
  • Schmadel S, Mormann F, Andrzejak RG, Lehnertz K, Ebert U. Amygdala kindling induces changes of EEG complexity and synchronization in rats. Epilepsia 41 (7), 17 (2000)
  • Mormann F, Lehnertz K, David P, Elger CE. Spatio-temporal phase synchronization in intracranial EEG recordings of patients with mesial temporal lobe epilepsy. Epilepsia 40 (7), 169-170 (1999)
  • Lehnertz K, Andrzejak R, Mormann F, Wegner J, Widman G, David P, Elger CE. Linear and nonlinear EEG analysis techniques for anticipating epileptic seizures. Epilepsia 40 (2), 71 (1999)
  • Widman G, Andrzejak R, Mormann F, Wegner J, David P, Lehnertz K, Elger CE. Designing a seizure prediction system: problems and pitfalls. Epilepsia 40 (2), 16 (1999)
Theses
  • Mormann F. Synchronisationsphänomene in synthetischen Zeitreihen und Zeitreihen  hirnelektrischer Aktivität. Diploma thesis in physics. University of Bonn (1998)
  • Mormann F. Synchronization phenomena in the human epileptic brain. PhD thesis in physics. University of Bonn (2003)     pdf
  • Mormann F. Anfallsvorhersage bei Epilepsie-Patienten mittels Synchronisationsverschiebungen im Elektroenzephalogramm. MD thesis in medicine. University of Bonn (2004)