Cees van Leeuwen

Nationality

Dutch

Function

Head

Function Description

I am leading the Laboratory for Perceptual Dynamics at the RIKEN Brain Science Institute (BSI). The Laboratory runs in its initial five-year period (April, 2001-2006). It consists on average of 15 academic and technical staff. The lab is equipped with 256 and 64 channel EEG systems, two eye-trackers, and (soon) one NIRS optical imaging system. Its focus is to investigate the complex dynamics of visual information processing, combining experimental measurement and mathematical modeling.
For the time the lab is in existence I am on leave from my position at Sunderland University. During the leave I maintain an advisory role in my home university and collaborate on research projects with members of the Psychology Department. Further responsibilities include: Editor of Philosophical Psychology, jointly with Prof. W. F. Bechtel (UCSD) and Associate Editor of Cognitive Processing; representing the journal for the Asian/Pacific region.

Links

Philosophical Psychology

Editor

Cognitive Processing

Associate Editor

CV

Education
Ph.D. (1989) Nijmegen
MA (1986) Nijmegen

Research Interests
Visual perception and cognition, in particular perceptual organization and visual attention
Visual imagery and figural creativity, with applications to industrial design
Neural Networks, Dynamical Systems Theory
Philosophy of Mind, Psychology, and Neuroscience; Theoretical Psychology

Teaching portfolio
Graduate and undergraduate courses in: Cognitive Science, Cognitive Psychology, Perception, Dynamical Systems Theory, Connectionism, Experimental Methods, Theoretical and Philosophical Psychology. Advisor in more than 10 Ph.D. projects and more than 20 MA projects

Professional Service

Convenor: RIKEN workshop on Interdisciplinary Perspectives on Mind and Brain, November, 2002. Participants: W. Bechtel, P. Churchland (San Diego), M. Kubovy (Virginia), Jun Tani (BSI), e.o.
Member, Programme Committee and convenor of a special session ICONIP 2002,Singapore.
Convenor, special/invited session KES2002, Crema, Italy
Convenor, Workshop on Perceptual organization, Amsterdam, May 1998. Participants: M. Donk (VU), J. Enns (B. Columbia), P. van der Helm (KUN), R. Kimchi (Haifa), M. Kubovy (Virginia), E. Leeuwenberg (KUN), R. van Lier (KUN), S. Palmer (Berkeley), P. Vos (KUN), J. Wagemans (Leuven, B), Ch. de Weert (KUN)
Convenor, Workshop on Perceptual and Intentional Dynamics, Amsterdam, October, 1995 Participants: H. Haken, H. Hock, J.A.S. Kelso, B. Tuller (Center for Complex Dynamical Systems, Boca Raton, FL); H.G. Geissler (Leipzig, BRD), S. Link (McMaster, CND), G. Schöner (CNRS Marseille, F), J. Townsend (Bloomington, IN)
Project Reviewer, NWO (Dutch Science Foundation), FWO (Flanders Science Foundation), 2001, 2002.
Manuscript reviewer for: Acta Psychologica, Journal of Experimental Psychology: Human Perception and Performance, Journal of Mathematical Psychology; Nederlands Tijdschrift voor Psychologie, Network: Computation in Neural Systems, Neural Networks, Pattern Recognition Letters, Perception, Perception & Psychophysics, Progress in Mathematical Psychology, Psychological Research, etc.

Department and University Service

Research chair during a major reorganization of the psychology department, University of Sunderland. I initiated and completed within the period of one year the expansion of the Psychology Department with 7 new academic staff (two full professors and five (senior)-lecturers) and new research labs. The expansion put firmly on track the transformation of a teaching-oriented department into a research oriented one. I worked with existing staff to increase their research activity and output.
Unit of Assessment Leader in the 2001, University of Sunderland. I prepared the submission Research Assessment Exercise,
Service teaching and consultancy for the department of Mathematics, Information Sciences and Physics, 1995-2000
Program leader, computational psychology (dept of cognitive science) 1997-2000.

Membership in Professional Organizations

Behavioral & Brain Sciences: Fellow
Psychonomic Society: Member
Society for Chaos and the Social Sciences

Publications

Peer-reviewed journal publications

van Leeuwen, C., Verver, S., & Brinkers, M. (2000) Visual illusions and outline-invariance in nonstationary activity patterns. Connection Science, 12, 279-298.

Verstijnen, I.M., van Leeuwen, C., Hamel, R., & Hennessey, J. (2000) What imagery can't do and why sketching might help. Empirical Studies of the Arts, 18, 167-182.

van Leeuwen, C. (1998). Regular spaces versus computing with chaos. The Behavioral and Brain Sciences, 21, 482-483.

Verstijnen, I.M., van Leeuwen, C., Goldschmidt, G., Hamel, R., & Hennessey, J.M. (1998b) Creative imagery of figural combinations: Combinations can be
formed but restructuring requires a sketch. Acta Psychologica, 99, 177-200.

Verstijnen, I.M., van Leeuwen, C., Goldschmidt, G., Hamel, R., & Hennessey, J.M. (1998a) Sketching and Creative Discovery. Design Studies, 19, 519-546.

Verstijnen, I.M. & van Leeuwen, C. (1998). Anomalous orientation effects in the Bourdon illusion. Psychonomic Bulletin & Review, 5, 290-294.

Hogeboom, M. & van Leeuwen, C. (1997). Visual search strategy and perceptual organization covary with individual preference and structural complexity. Acta Psychologica, 95, 141-164.

van Leeuwen, C., Steyvers, M., & Nooter, M. (1997). Stability and intermittency in large-scale coupled oscillator models for perceptual segmentation. Journal of Mathematical Psychology, 41, 319-344.

van Leeuwen, C., & Bakker, L. (1995). Stroop can occur without Garner interference: Strategic and mandatory influences in multidimensional stimuli. Perception & Psychophysics, 57, 379-392.

Snijder, P. & van Leeuwen, C. (1994). Motion detection and tracking with a hierarchical modular filter system. Pattern Recognition , 27, 1463-1473.

van Leeuwen, C. & Stins, J. (1994). Perceivable information or: the happy marriage between ecological realism and Gestalt. Philosophical Psychology, 7, 263-281.

van Leeuwen, L., Smitsman, A., & van Leeuwen, C. (1994). Affordances, perceptual complexity, and the development of tool use. Journal of Experimental Psychology: Human Perception and Performance, 20, 174-191.

Stins, J., & van Leeuwen, C. (1993). Context influence on the perception of figures as conditional upon perceptual organization strategies. Perception & Psychophysics, 53, 34-42.

Hogeboom, M. & van Leeuwen, C. (1992). Synergetica: een nieuwe impuls voor Gestaltpsychologie en Ecologisch Realisme (Synergetics: a new impulse for Gestalt psychology and ecological realism). Nederlands tijdschrift voor Psychologie (Netherlands Journal of Psychology), 47, 31-36.

van Leeuwen, C. (1991). Testing organization preferences in serial pattern learning. Journal of General Psychology, 118, 139-145.

van Leeuwen, C. & Buffart, H. (1991). Action at a distance: Evidence for network models from plausibility ratings of novel compounds. The Psychological Record, 41, 415-428.

van Leeuwen, C. & van de Hof, M. (1991). What has happened to Prägnanz: Coding, stability or resonance. Perception & Psychophysics, 50, 435-448.

van Leeuwen, C. (1990b). Perceptual learning systems as conservative structures: Is economy an attractor? Psychological Research, 52, 145-152.

van Leeuwen, C. (1990a). Indeterminacy of the isomorphism heuristic. Psychological Research, 52, 1-4.

van Leeuwen, C. & van Leeuwen, L. (1990). Wie werden Symbole wahrgenommen? Die Antworte von Helmholtz und Koffka (How are symbols perceived? The answers of Helmholtz and Koffka). Zeitschrift für Semiotik (Journal of Semiotics), 12, 63-74 (in German).

van der Vegt, J., Buffart, H., & van Leeuwen, C. (1989). The Structural Memory: A network model for human perception of serial objects. Psychological Research, 50, 211-222.

van Leeuwen, C. (1989). PDP and Gestalt, an integration? Psychological Research, 50, 199-201.

van Leeuwen, C. & Buffart, H. (1989). Facilitation of retrieval by perceptual structure. Psychological Research, 50, 202-210.

van Leeuwen, C., Buffart, H., & van der Vegt, J. (1988). Sequence influence on the organization of meaningless serial stimuli: Economy after all. Journal of Experimental Psychology: Human Perception and Performance, 14, 481-502.

van Leeuwen, C. (1987). Schemas and representational constraints. Behavioral and Brain Sciences, 10, 448.

Books and Edited Volumes

van Leeuwen, C. (forthcoming). Network Ecology Theory: A principle of processing in perception and cognition. Hillsdale, N.J.: Erlbaum Inc. 2 volumes.

van Leeuwen, C. (1994) The Gestalt heritage and its relevance to today's issues Philosopical Psychology, 7(2), Guest Editor of Special Issue.

van Leeuwen, C. (1989). Structural Memory and the Dynamics of Preference. Ph.D. Thesis, University of Nijmegen.

Invited Articles, Full-text Conference Proceedings, and Book Chapters

Lachmann, T., & van Leeuwen, C. (2004). Memory-guided Inference in same-different comparison tasks. In C. Kaernbach, E. Schroeger, & H. J. Müller.(Eds.): Psychophysics beyond sensation. Mahwah, NJ: Erlbaum (pp. 199-222).

Gong, P., Nikolaev, A., & van Leeuwen (2003). Dynamical poperties of global phase synchronization patterns in human EEG. Proceedings of the Symposion on Nonlinear Science and its Applications (SNSA 03 (CD-edition), Shanghai, China, 0470/full text.

Tyukin, I. Yu. & van Leeuwen, C. (2003). Pattern-dependent synchronization in a system of coupled maps. Proceedings of the Symposion on Nonlinear Science and its Applications (SNSA 03 (CD-edition), Shanghai, China, 0470/full text..

Tyukin, I.Yu. & van Leeuwen, C. (2003). On the choice of coupling in a system of coupled maps: Structure implies features. In: Proceedings of the Physics and Control Conference (PhysCon 2003), St. Petersburg, Russia. pp 555-562. IEEE Catalog number: 03EX708C, ISBN: 0-7803-7940-3.

Tyukin, I.Yu., Prokhorov, D.V. & van Leeuwen, C. (2003). Finite-form realization of adaptive algorithms. In: Proceedings of the European Control Conference (ECC 2003). Cambridge, UK. CD-Rom.

Tyukin I.Yu., van Leeuwen C., Prokhorov D.V. Terekhov V.A. (2002) On a Problem of Time-Varying Learning Rate Influence on the Adaptive System Dynamics. Proceedings of 41^st IEEE Conference on Decision and Control. Nevada, USA (pp. 4718-4721).

Nakatani, H. & van Leeuwen, C. (2003). A basic study on analysis of single-trial event related potentials induced by visual stimulation. Proceedings of the 18th Symposium on Biological and Physiological Engineering, pp. 251-252. (in Japanese)

Nikolaev, A., Ito, J., Aukes, M., Luman, M., Nakatani, C., & van Leeuwen, C. (2002) Eye movements during perceptual switches in the pointing triangles illusion. In: L. Wang, J.C. Rajapakse, & K. Fukushima (Eds): Iconip?02 Proceedings of the 9th International Conference of Neural Information Processing, Singapore, 981-04-7524-1 (pp. 1174-1176).

Plomp, G., Nakatani, C., & van Leeuwen, C. (2002). Different interpretations of ambiguously occluded figures are relected in eye movements. In: L. Wang, J.C. Rajapakse, & K. Fukushima (Eds): Iconip?02 Proceedings of the 9th International Conference of Neural Information Processing, Singapore, 981-04-7524-1 (pp. 1169-1173).

van Leeuwen, C., Aukes, M., & Luman, M. (2002) Ambiguous figures, fixation durations, and the Bus-paradox. In: L. Wang, J.C. Rajapakse, & K. Fukushima (Eds): Iconip?02 Proceedings of the 9th International Conference of Neural Information Processing, Singapore, 981-04-7524-1, pp 1164-1168.

Plomp G, Nakatani C, van Leeuwen C (2002) Visual completion and eye movements in a directed visual search task. Perception, 31 Suppl. S, 180.

Jurica, P., Brinkers, M., van Leeuwen, C. (2002). Component-based framework for design and simulation of neural networks . Proceedings of KES2002. Also available at http://pdl.brain.riken.go.jp/publications/Jurica.pdf

Gong, P. & van Leeuwen, C. (2002) Emergence of scale-free network structure with chaotic units. Proceedings of KES2002. Also available at: http://pdl.brain.riken.go.jp/publications/Gong.pdf

Raffone, A. & van Leeuwen, C. (2002). The "Divide and Conquer" model of image Segmentation. Proceedings of KES 2002. Also available at: http://pdl.brain.riken.go.jp/publications/Raffone.pdf

Tyukin, I & van Leeeuwen, C. (2002) Some problems related to the choice of coupling in a system of coupled maps. Proceedings of KES2002. Also available at: http://pdl.brain.riken.go.jp/publications/Tyukin.pdf

van Leeuwen, C., Gong, P., & Nikolaev, A. (2002). Coherence intervals in the brain and their role in inner psychophysics. In J.A. Da Silva, E.H. Matsushima, & N.R. Ribeiro-Filho (Eds.). Fechner Day 2002. Ribeirao Preto, Brasil: ISP. 85-902952-1-4 (pp. 151-155)

van Leeuwen, C., Raffone, A., & Simionescu, A. (2001) Flexible Synchronization in cognitive processing. Proceedings of the International Conference of Neural Information Processing (ICONIP 2001). Also available at: http://www.cse.cuhk.edu.hk/~apnna/proceedings/iconip2001/papers/040a.pdf

van Leeuwen, C. (2001) The complex dynamical systems approach to inner psychophysics. In: E. Sommerfeld, R. Kompass, T. Lachmann (Eds.). Fechner Day 2001: Proceedings of the International Society of Psychophysics (pp. 55-60). Lengerich, Berlin, Germany: Pabst.

van Leeuwen, C. (2000) Coupled Map Lattices as Models for Visual Information Processing. Proceedings of the International Conference of Neural Information Processing (ICONIP 2000), pp. 408-411.

van Leeuwen, C., Verstijnen, I.M., & Hekkert, P. (1999). Common unconscious dynamics underly uncommon conscious effect: A case study in the iterative nature of perception and creation In. J.S. Jordan (Ed.), Modeling Consciousness Across the Disciplines. MD: University Press of America

"Lovely extended case study of the use of sketchpads by abstract artists. See the commentary by Andy Clark in Mindware, pp.147-150" John Sutton.

van Leeuwen, C. (1998b). Visual perception at the edge of chaos. In J.S. Jordan (Ed.), Systems Theories and Apriori Aspects of Perception. Amsterdam, NL: Elsevier, pp. 289-314.

van Leeuwen, C. (1998a). Perception. In W. Bechtel & G. Graham (Eds.), A Companion to Cognitive Science. Oxford, UK: Blackwell, pp. 265-282.

Verstijnen, I.M., Stuyver, R. , Hennessey, J.M., van Leeuwen, C., & Hamel, R. (1997). Considerations for electronic idea creation tools. Conference Manual of CHI-96.

van Leeuwen, C. (1995b). Task, intention, context, globality, ambiguity: More of the Same. In P. Kruse & M. Stadler (Eds.), Ambiguity in Mind and Nature. Berlin, Germany: Springer Verlag, pp. 85-98.

van Leeuwen, C. (1995a). Founding fathers erring in the dark. Review of S.C. Masin, Ed. (1993), Foundations of Perceptual Theory. Acta Psychologica, 89, 283-290.

Verstijnen, I.M., & van Leeuwen, C. (1995). Review of: B. Roskos-Ewoldsen, M. Intons-Peterson & R. Anderson (Eds), Imagery, Creativity and Discovery: a cognitive approach. Acta Psychologica, 89, 293-295.

van Leeuwen, C. (1993) We see the world as we do because we view the world as we do: Strategies of Gestalt formation. In R. Casati & G. White (Eds.), Proceedings of the 16th international Wittgenstein Symposium. Kirchberg am Wechsel, Austria: The Austrian Ludwig Wittgenstein Society, pp. 285-291.

van Leeuwen, C. (1992). Drawing inferences from representation structure. In H.G. Geissler, S.W. Link & J.T. Townsend (Eds.), Cognition, Information Processing and Psychophysics: Basic Issues. Hillsdale, N.J.: Erlbaum, pp. 91-103.

Elshout, J. & van Leeuwen, C. (1992). Protocolanalyse als Methode van Kennisacquisitie voor Expertsystemen (Protocol Analysis as Method for Knowledge Acquisition in Expert Systems). In R. Jorna & J. Simons (Eds.), Kennis in organisaties: Theorie en Toepassing van Kennissystemen. (Knowledge in Organizations: Theory and Applications of Expert Systems). Muiderberg: Coutinho, pp. 154-175 (in Dutch).

Publications

Andrey R Nikolaev, Sergei Gepshtein, Pulin Gong & Cees van Leeuwen (2009). Duration of coherence intervals in electrical brain activity in perceptual organization. Cerebral Cortex . (doi:10.1093/cercor/bhp107)

Thomas Lachmann, Bettina Schumacher, and Cees van Leeuwen (2009). Controlled but independent: Effects of mental rotation and developmental dyslexia in dual-task settings. Perception, 38, 1019--1034.

Mikail Rubinov, Olaf Sporns, Cees van Leeuwen and Michael Breakspear (2009). Symbiotic relationship between brain structure and dynamics. BMC Neuroscience, 10:55.

Gijs Plomp, Cees van Leeuwen, and Andreas A. Ioannides (2009). Functional Specialization and Dynamic Resource Allocation in Visual Cortex. Human Brain Mapping.

Lars T. Boenke, Frank W. Ohl, Andrey R. Nikolaev, Thomas Lachmann, Cees van Leeuwen (2009). Different time courses of Stroop and Garner effects in perception -- An Event-Related Potentials Study. NeuroImage, 45 (4), 1272--1288.

Herrero JL, Nikolaev AR, Raffone A, van Leeuwen C (2009). Selective attention in visual short-term memory consolidation. Neuroreport, 20 (7), 652--656.

Peter Jurica, Cees van Leeuwen (2009). OMPC: an open-source MATLAB®-to-Python compiler. Frontiers in Neuroinformatics, 3 (5), 1--9.

Thomas Lachmann, Cees van Leeuwen (2008). Differentiation of holistic processing in the time course of letter recognition. Acta Psychologica, 129 (1), 121--129.

Nobuyuki Jincho, Thomas Lachmann, Cees van Leeuwen (2008). Dissociating congruence effects in letters versus shapes: Kanji and kana. Acta Psychologica, 129 (1), 138--146.

Thomas Lachmann and Cees Van Leeuwen (2008). Different letter-processing strategies in diagnostic subgroups of developmental dyslexia. Cognitive Neuropsychology, 25 (5), 730--744.

Nikolaev AR, Gepshtein S, Kubovy M, van Leeuwen C (2008). Dissociation of early evoked cortical activity in perceptual grouping. Experimental Brain Research, 186 (1), 107--122.

IVAN TYUKIN, ERIK STEUR, HENK NIJMEIJER, AND CEES VAN LEEUWEN (2008). NONUNIFORM SMALL-GAIN THEOREMS FOR SYSTEMS WITH UNSTABLE INVARIANT SETS. SIAM Journal on Control and Optimization, 47 (2), 849--882.

Nikolaev AR, Ziessler M., Dimova K., van Leeuwen C (2008). Anticipated action consequences as a nexus between action and perception: evidence from event-related potentials. Biological Psychology, 78 (1), 53--65.

Ivan Y. Tyukin, Danil Prokhorov, Cees van Leeuwen (2008). Adaptive Classification of Temporal Signals in Fixed-Weight Recurrent Neural Networks: An Existence Proof. Neural Computation, 20, 2564--2596.

THOMAS LACHMANN & CEES VAN LEEUWEN (2008). Goodness is central: Task invariance of perceptual organization in a dual-task setting. Japanese Psychological Research, 50 (4), 193--203.

Peter Jurica, Sergei Gepshtein, Ivan Tyukin, Danil Prokhorov, Cees van Leeuwen (2007). Unsupervised adaptive optimization of motion-sensitive systems guided by measurement uncertainty. 2007 International Conference on Intelligent Sensors, Sensor Networks and Information Processing, 179--184.

Nikolaev AR, Gepshtein S, Kubovy M, van Leeuwen C (2007). Temporal structure of perceptual grouping: EEG analysis. Proceedings of the 23rd Annual Meeting of the International Society for Psychophysics (Fechner Day)., 67--72.

van Leeuwen, C. (2007). Chaos breeds autonomy: connectionist design between bias and baby-sitting. Cognitive Processing.

Tyukin I.Yu., Prokhorov D.V., van Leeuwen C. (2007). Adaptation and Parameter Estimation in Systems with Unstable Target Dynamics and Nonlinear Parametrization. IEEE Transactions on Automatic Control.

Herrero, J. L., Crawley, R., van Leeuwen, C., Raffone, A. (2007). Visual marking and change detection. Cognitive Processing, 8, 233--244.

Pulin Gong, Andrey R. Nikolaev, and Cees van Leeuwen (2007). Intermittent dynamics underlying the intrinsic fluctuations of the collective synchronization patterns in electrocortical activity. Physical Review E, 76 (011904).

Andrey R. Nikolaev & Cees van Leeuwen (2007). Collinearity, Curvature Interpolation, and the Power of Perceptual Integration. Psychological Research, 71 (4), 427--437.

van Leeuwen, C. (2007). What needs to emerge to make you conscious?. Journal of Consciousness Studies, 14, 115--136. (Published with extensions in Japanese translation by Masao Ito in: Seitai no Kagaku, 58, 21-36)

Lachmann, T. & van Leeuwen, C. (2007). Paradoxical enhancement of letter recognition in developmental dyslexia. Developmental Neuropsychology, 31 (1), 61--77.

Rusiak, P., Lachmann, T., Jaskowski, P., & van Leeuwen, C. (2007). Mental Rotation of Letters and Shapes in Developmental Dyslexia. Perception, 36, 617--631.

van Leeuwen, C. (In Press). Synchrony, binding, and consciousness: how are they related?. Theory and Psychology.

Junji Ito, Andrey R. Nikolaev, Cees van Leeuwen (2007). Dynamics of Spontaneous Transitions Between Global Brain States. Human Brain Mapping, 28 (9), 904--913.

Pulin Gong and Cees van Leeuwen (2007). Dynamically Maintained Spike Timing Sequences in Networks of Pulse-Coupled Oscillators with Delays. Physical Review Letters (98), 048104-1--048104-4.

Kwok, H.F., Jurica, P. Raffone, A., & van Leeuwen, C. (2007). Robust emergence of small-world structure in networks of spiking neurons. Cognitive Neurodynamics, 1, 39--51.

Lachmann, T. & van Leeuwen, C. (2007). Goodness takes effort: perceptual organization in dual-task settings. Psychological Research, 71, 152--169.

Ivan Tyukin and Cees van Leeuwen (2006). Decentralized adaptation in interconnected uncertain systems with nonlinear parametrization. Lecture Notes in Control and Information Sciences, 336, 251--270.

Gijs Plomp, Lichan Liu, Cees van Leeuwen, and Andreas A. Ioannides (2006). The "Mosaic Stage" in Amodal Completion as Characterized by Magnetoencephalography Responses. Journal of Cognitive Neuroscience, 18 (8), 1394--1405.

Lu, H.T., & van Leeuwen, C. (2006). Synchronization of chaotic neural networks via output or state coupling. Chaos, Solitons and Fractals, 30, 166--176.

Prashanth, A. & van Leeuwen, C. (2006). Phase plot manifestations in globally coupled maps: Effects of scale. Connection Science, 18, 61--67.

Plomp, G & van Leeuwen, C (2006). Asymetric Priming Effects in Visual Processing of Occlusion Patterns. Perception & Psychophysics, 68, 946--958.

Gepshtein, Sergei and Tyukin, Ivan and Kubovy, Michael and van Leeuwen, Cees (2006). A Pareto-optimality theory of motion perception. Journal of Vision, 6 (6), 577--577.

Liu, L., Plomp, G., van Leeuwen, C., & Ioannides, A. (2006). Neural correlates of priming on occluded figure interpretation in human fusiform cortex. Neuroscience, 141, 1585--1597.

Junji Ito, Andrey R. Nikolaev, and Cees van Leeuwen (2005). Spatial and temporal structure of phase synchronization of spontaneous alpha EEG activity. Biological Cybernetics, 92, 54--60.

Lachmann, T. & van Leeuwen, C. (2005). Task-invariant Aspects of Goodness in Perceptual Representation. Quarterly Journal of Experimental Psychology, 58A (7), 1295--1310.

Lachmann, T. & van Leeuwen, C. (2005). Individual pattern representations are context- independent; their collective representation is context-dependent. Quarterly Journal of Experimental Psychology, 58A (7), 1265--1294.

Jaarsveld, S., & van Leeuwen, C. (2005). Sketches from a Design Process: Creative Cognition Inferred From Intermediate Products. Cognitive Science, 95, 79--107. (<a href="/jaarsveld/">more information available here</a>)

Nakatani, C., Ito, J., Nikolaev, R. A., Gong, P., & van Leeuwen, C. (2005). Phase Synchronization Analysis of EEG during Attentional Blink. Journal of Cognitive Neuroscience, 17 (12), 1969--1979.

Nikolaev AR, Gong P, van Leeuwen C. (2005). Evoked phase synchronization between adjacent high-density electrodes in human scalp EEG: Duration and time course related to behavior. Clinical Neurophysiology, 116 (10), 2403--2419. (coherence intervals)

Ivan Tyukin, Denis Efimov, and Cees van Leeuwen (In Press). Adaptive Regulation to Invariant Sets. 16th IFAC World Congress 2005.

Ivan Tyukin and Cees van Leeuwen (In Press). Adaptation and nonlinear parametrization: nonlinear dynamics prospective. 16th IFAC World Congress 2005.

H. Nakatani and C. van Leeuwen (2005). Individual differences in perceptual switching rates; the role of occipital alpha and frontal theta band activity. Biological Cybernetics, 93, 343--354.

Ivan Tyukin, Danil Prokhorov, and Cees van Leeuwen (2004). Parameter estimation and control for a class of systems with nonlinear parametrization. arXiv.org.

Gong, P., & van Leeuwen, C. (2004). Evolution to a small-world network with chaotic units. Europhysics Letters, 67 (2), 328--333.

Hironori Nakatani and Cees van Leeuwen (2004). Perceptual switching and synchronized neural activities between frontal and parietal areas in human scalp EEG. IEICE 2004.

Lachmann, T. & van Leeuwen, C. (2004). Negative Congruence Effects in Letter and Pseudo- letter Recognition: The Role of Similarity and Response Conflict. Cognitive Processing, 5, 239--248.

Plomp, G., Nakatani, C., Bonnardel, V., & van Leeuwen (2004). Amodal completion as reflected by gaze durations. Perception, 33, 1185--1200.

van den Berg, D. & van Leeuwen, C. (2004). Adaptive rewiring in chaotic networks renders small-world connectivity with consistent clusters. Europhysics Letters, 65 (4), 459--464.

van Leeuwen, C. & Lachmann, T. (2004). Negative and Positive Congruence Effects in Letters and Shapes. Perception & Psychophysics, 66, 908--925.

Nikolaev AR, van Leeuwen (2004). Flexibility in Spatial and Non-Spatial Feature Grouping: an Event-Related Potentials Study. Cognitive Brain Research, 22 (1), 13--25.

Lachmann, T. & van Leeuwen, C. (2004). Negative and Positive Congruence Effects in Letters and Shapes. Technical Report on Attention and Cognition 2004.

Ivan Tyukin, Danil Prokhorov, and Cees van Leeuwen (2003). Adaptive Algorithms in Finite Form. arXiv.org.

Ito, J., Nikolaev, A.R., Luman, M., Aukes, M.F., Nakatani, C., & van Leeuwen, C. (2003). Perceptual switching, eye-movements, and the bus-paradox. Perception, 32, 681--698.

Gong, P., & van Leeuwen, C. (2003). Emergence of scale-free network with chaotic units. Physica A: Statistical Mechanics and its Applications, 321, 679--688.

Gong, P., Nikolaev, A., & van Leeuwen, C. (2003). Scale-invariant fluctuations of dynamical synchronization in human brain electrical activity. Neuroscience Letters, 336, 33--36.

Nakatani, H., Khalilov, I., Gong, P., & van Leeuwen, C. (2003). Nonlinearity in giant depolarizing potentials. Physics Letters A, 319, 167--172.

Raffone, A. & van Leeuwen, C. (2003). Dynamic synchronization and chaos in an associative neural network with multiple active memories. Chaos, 13, 1090--1104. (also selected for the September 1, 2003 issue of the <a target="_blank" href="http://www.vjbio.org">Virtual Journal of Biological Physics Research</a>)

Tyukin, I.Yu., van Leeuwen, C., & Prokhorov, D. (2003). Parameter Estimation of Sigmoid Superpositions: Dynamical System Approach. Neural Computation, 15, 2419--2455.

Andrey R. Nikolaev, Pulin Gong, and Cees van Leeuwen (2003). Dynamical properties of global phase synchronization patterns in human EEG. SNSA 2003.

Ivan Tyukin and Cees van Leeuwen (In Press). Pattern-dependent Synchronization in a System of Coupled Maps. SNSA 2003.

Junji Ito, Andrey R. Nikolaev, and Cees van Leeuwen (2003). Traveling Waves of Spontaneous Alpha EEG Activity - phase synchronization method for spatio-temporal EEG pattern analysis. SNSA 2003.

Ivan Tyukin and Cees van Leeuwen (In Press). On the Choice of Coupling in a System of Coupled Maps: Structure Implies Features. PhysCon 2003.

Ivan Tyukin, Danil Prokhorov, and Cees van Leeuwen (In Press). Finite Form Realizations of Adaptive Control Algorithms. IEE European Control Conference.

Peter Jurica, Martijn Brinkers, and Cees van Leeuwen (2002). Component-based Framework for Design and Simulation of Neural Networks. KES 2002.

Raffone, A. & van Leeuwen (2002). Chaos and neural coding: is the binding problem a pseudo-problem?. Behavioral and Brain Sciences, 24, 826--827.

van Leeuwen, C. & Simionescu, I. (2002). Flexible synchronization indicators for complex systems. Connection Science, 14, 203--217.

Ivan Tyukin and Cees van Leeuwen (In Press). Some Problems Related to the Choice of Coupling in a System of Coupled Maps. KES 2002.

Pulin Gong and Cees van Leeuwen (In Press). Emergence of Scale-free Network Structure with Chaotic Units. KES 2002.

Antonino Raffone and Cees van Leeuwen (In Press). The Divide and Conquer Model of Image Segmentation: Object-bounded Synchrony Propagation in Coupled Map Lattices. KES 2002.

Cees van Leeuwen, Maartje Aukes, and Marjolein Luman (In Press). Ambiguous Figures, Fixation Durations, and the Busparadox. ICONIP.

Cees van Leeuwen, Pulin Gong, and Andrey Nikolaev (2002). Coherence Intervals in the Brain and Their Role in Inner Psychophysics. Fechner Day.

Ivan Tyukin, Cees van Leeuwen, Danil Prokhorov, and Valery Terekhov (In Press). On a Problem of Time-Varying Learning Rate Influence on the Adaptive System Dynamics. IEEE Conference on Decisions and Control 2002.

Raffone, A., Olivetti Belardinelli, M., & van Leeuwen, C. (2001). Context And Neural Coding: Are Universals Reflected In The Experienced World?. Behavioral and Brain Sciences, 24, 701--702.

Raffone, A., & van Leeuwen, C. (2001). Activation and coherence in memory processes: Revisiting the Parallel Distributed Processing approach to retrieval. Connection Science, 13, 349--382.

van Leeuwen, C., & Raffone, A. (2001). Coupled map Lattice models of long, short, and intermediate memory. Cognitive Processing, 2, 67--116.

Cees van Leeuwen, Ionel Simionescu, and Antonino Raffone (In Press). Flexible Synchronization in Cognitive Processing. ICONIP.

Cees van Leeuwen (In Press). The Complex Dynamical Systems Approach to Inner Psychophysics. Fechner Day.

van Leeuwen, C., Verver, S., & Brinkers, M. (2000). Visual illusions and outline-invariance in nonstationary activity patterns. Connection Science, 12, 279--298.

Cees van Leeuwen (In Press). Coupled Map Lattices as Models for Visual Information Processing. ICONIP.

Ivan Tyukin, Cees van Leeuwen, Danil Prokhorov, and Valery Terekhov (In Press). An Extension of Certainty Equivalence Condition in Direct Adaptive Control. arXiv.org.

Staff