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Prof. Dr. Peter de Weerd

Professor

Universiteit Maastricht
Faculty of Psychology & Neuroscience
Department of Neurocognition
P.O. Box 616
6200 MD Maastricht
The Netherlands

For visitors:
Universiteitssingel 40 East
6229 ER Maastricht

July 1985

• M. Sc. (Psychology) at the Institute of Psychology of the Catholic University of Louvain, Belgium

June 1991

• Ph. D. (Psychology) at the Institute of Psychology of the Catholic University of Louvain, Belgium

Employment

• Associate Professor (UHD) at the University of Maastricht,

• Faculty of Psychology, Department of Cognitive Neuroscience, Maastricht, The Netherlands

• Assistant Professor at the University of Arizona, Dept. of Psychology, Tucson, Arizona 85721-0068

• Visiting Research Associate at the

• National Institute of Mental Health, Bethesda, Maryland (1991-1998)

• Scientific Associate, OT/89/25 (1989-1991)

• Research Assistant, National Fund for Scientific Research of Belgium (1986)  
   

Oct.’2003- current  

• Teaching at University of Maastricht (UM):

• Coordinator of ‘Perception and Attention’

• Coordinator of ‘Perceptual filling-in’

• Guest lectures and tutorships in other courses, at Bachelor’s, Masters, and Research Masters levels. 

• Supervision research internships at UM and abroad, Bachelor’s and masters thesis’s, Ph.D. reading Commissions

• Planning and tutorships Introductory Perception (Waarnemen) (2006)

• Supervision 2 Ph.D. Students, 2 postdocs (2006)

Oct.’98- Oct 2003   

Teaching at University of Arizona:

• involved 10 full semester courses (graduate and undergraduate) on topics in the field of Perception, Learning, and Memory Formation, as well as smaller seminars.

• Primary supervision of 2 postdocs, 2 graduate students. 

Papers

• KASTNER S., DE WEERD P. & UNGERLEIDER L.G. Cortical mechanisms of visuospatial attention in humans and monkeys.  In: Pomerantz J.R. & Crair M.C. (Eds.) Topics in integrative neuroscience: From cells to cognition; Cambridge University Press, 2007, in press.

• BLES M., SCHWARZBACH J., DE WEERD P., GOEBEL R. & JANSMA B.M. Receptive field size dependent attention effects in simultaneously presented stimulus displays. Neuroimage, 2006, 30: 506-511.

• DE WEERD P., SMITH E. & GREENBERG P. Effect of selective attention on perceptual filling-in. Journal of Cognitive Neuroscience, 2006, 18: 335-347. 

• DE WEERD P. Perceptual filling-in: More than the eye can see. Progress in Brain Research, 2006, 154: 227-245.

• BERTINI G., BUFFALO E.A., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Visual responses to targets and distracters by inferior temporal neurons after lesions of extrastriate areas V4 and TEO. Neuroreport, 2004, 15: 1611-1615.

• PINAUD R., DE WEERD P.,  CURRIE W.,  FIORANI M. Jr., HESS, F.F.,  & TREMERE, L.A.  NGFI-A Immunoreactivity in the Primate Retina: Implications for Genetic Regulation of Plasticity. International Journal of Neuroscience, 2003, 113:1275-85.

• DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Generalized deficit in visual selective attention after V4 and TEO lesions in macaques. European Journal of Neuroscience, 2003, 18: 1671-1691.

• De Weerd P., Reinke K., Ryan L., McIsaac T., Perschler p.,  Schnyer d., Trouard t., and Gmitro A. Cortical Mechanisms for Acquisition and Performance of Bimanual Motor Sequences. NeuroImage, 2003, 19: 1405-16.

• DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Impairments in spatial generalization of visual skills after V4 and TEO lesions in macaques. Behavioral Neuroscience, 2003, 117: 1441-1474.

• KASTNER S., DE WEERD P., PINSK M.A., ELIZONDO M.I., DESIMONE R. &  UNGERLEIDER L.G. MODULATION OF SENSORY SUPPRESSION: Implication for receptive field sizes in the human visual cortex. Journal of Neurophysiology, 2001, 86: 1398-1411.

• KASTNER S., DE WEERD P. & UNGERLEIDER L.G. Texture segregation in the human visual cortex: A functional MRI study. Journal of Neurophysiology, 2000, 83: 2453-2457.

• KASTNER S., PINSK M.A., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Increased activity in human visual cortex during directed attention in the absence of visual stimulation. Neuron, 1999, 22: 751-761. 

• DE WEERD P., PERALTA III M.R., DESIMONE R. & UNGERLEIDER L.G. Loss of attentional stimulus selection after extrastriate cortical lesions in macaques. Nature Neuroscience, 1999, 2: 753-758.

• DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Perceptual filling-in: A parametric study. Vision Research, 1998, 38:2721-2734.

• KASTNER S., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Mechanisms of directed attention in human extrastriate cortex as revealed by  functional MRI. Science, 1998, 282: 108-111.

• DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Response to Pessoa and Neumann: A few clarifications. Invited Commentary on PESSOA L. & NEUMANN H. Why does the brain Fill-in? Trends in Cognitive Sciences, 1998, 2: 425-426. 

• GATTASS R. PESSOA L.A., DE WEERD P. & FIORANI M. Filling-in in topographically organized distributed networks. Proceedings of the Brazilian Academy of Sciences, 1998, 70: 1-11.

• DE WEERD P. Linking spread of neural activity and filling-in: A few more arguments in favor. Invited Commentary on PESSOA L., THOMPSON E., & NOE A. Finding out about filling-in: A guide to perceptual completion for visual science and the philosophy of perception. Behavioral and Brain Sciences, 1998, 21: 754-755.

• SPRAGUE J.M., DE WEERD P., XIAO D.X., VANDENBUSSCHE E. & ORBAN G.A.  Orientation discrimination in the cat : its cortical locus .II. Extrastriate cortical areas.  Journal of Comparative Neurolology, 1996, 364: 32-50. 

• DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Cue dependent deficits in grating orientation discrimination after V4 lesions in macaques. Visual Neuroscience, 1996, 13: 529-538. 

• DE WEERD P., GATTASS R., DESIMONE, R. & UNGERLEIDER L.G. Responses of cells in monkey visual cortex during perceptual filling-in of an artificial scotoma. Nature, 1995, 377: 731-734.

• DE WEERD P., SPRAGUE J.M., VANDENBUSSCHE E. & ORBAN G.A.  Two stages in visual texture segregation: A lesion study in the cat.  Journal of Neuroscience, 1994, 14: 929-948. 

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Occlusion cues contribute to orientation judgments of occlusion-defined contours. Perception & Psychophysics, 1993, 54 : 706-715. 

• DE WEERD P., SPRAGUE J.M., RAIGUEL S., VANDENBUSSCHE E. & ORBAN G.A.  Effects of visual cortex lesions on orientation discrimination of illusory contours in the cat.  European Journal of  Neuroscience, 1993, 5: 1695-1710.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Texture segregation in the cat: a parametric study. Vision Research, 1992, 32 : 305-322.

• VANDENBUSSCHE E., SPRAGUE J.M., DE WEERD P. & ORBAN G.A.  Orientation discrimination in the cat : its cortical locus .I. Areas 17 and 18.  Journal of Comparative Neurology, 1991, 305: 632-658.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Speeding up visual discrimination learning in cats by differential exposure of positive and negative stimuli.  Behavioural Brain Research, 1990, 36: 1-12.

• ORBAN G.A., VANDENBUSSCHE E., SPRAGUE J.M. & DE WEERD P.  Orientation discrimination in the cat : a distributed function.  Proceedings of the National Academy of Science USA, 1990, 87: 1134-1138.

• De Weerd P., VANDENBUSSCHE E. & ORBAN G.A.  Bar orientation discrimination in the cat.  Visual Neuroscience, 1990, 4: 257-268.

• DE WEERD P., VANDENBUSSCHE E., DE BRUYN B. & ORBAN G.A.  Illusory contour orientation discrimination in the cat.  Behavioural Brain Research, 1990, 39: 1-17.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Staircase procedure and constant stimuli method in cat psychophysics.  Behavioural Brain Research, 1990, 40: 201-214.

• ORBAN G.A., VANDENBUSSCHE E., SPRAGUE J.M. & DE WEERD P.  Stimulus contrast and visual cortical lesions.  Experimental Brain Research, 1988, 72: 191-194.

Books

• PINAUD R, TREMERE L. & DE WEERD P. (Eds.). Plasticity in the visual system: From genes  to circuits. NY, Springer, 2006.

• PESSOA L.& DE WEERD P. (Eds.). Filling-in: From Perceptual Completion to Skill Learning. Oxford, Oxford University Press, 2003.

Chapters

• DE WEERD P., PINAUD R. & BERTINI G. Plasticity in V1 induced by perceptual learning. In: Plasticity in the visual system: From genes to circuits: Pinaud L., Tremere L. & De Weerd P. (Eds.). NY, Springer, 2006.

• DE WEERD P., PINAUD R. & TREMERE L. Introduction to plasticity in the visual system. In: Plasticity in the visual system: From genes to circuits: Pinaud L., Tremere L. & De Weerd P. (Eds.). NY, Springer, 2006.

• TREMERE L., DE WEERD P. & PINAUD R. A unified theoretical frmaework for plasticity in visual circuitry. In: Plasticity in the visual system: From genes to circuits: Pinaud L., Tremere L. & De Weerd P. (Eds.). NY, Springer, 2006.

• KASTNER S., DE WEERD P. & UNGERLEIDER L.G. Cortical mechanisms of visuospatial attention in humans and monkeys.  In: Proceedings of the 4th DeLange Conference, 2003. 

• DE WEERD P. The neural basis of attention. In: Encyclopedia of Cognitive Science. Nature Publishing Group, 2003.

• DE WEERD P. The occipital lobe. In: Encyclopedia of Cognitive Science. Nature Publishing Group, 2003.

• SPILLMAN L. &  DE WEERD P. Mechanisms of Surface Completion: Perceptual Filling-in of Texture. In: Filling-in: From Perceptual Completion to Skill Learning. Pessoa L. & De Weerd P. (Eds.). Oxford University Press, 2003.

• DE WEERD P. & PESSOA L. Filling-in: More than meets the eye. In: Filling-in: From Perceptual Completion to Skill Learning. Pessoa L.& De Weerd P. (Eds.). Oxford University Press, 2003.

• Tremere L.A, Pinaud R. & De WEERD P. Contributions of Inhibitory Mechanisms to Perceptual Completion. In: Filling-in: From Perceptual Completion to Skill Learning. Pessoa L.& De Weerd P. (Eds.). Oxford University Press, 2003

• SPRAGUE J.M., DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.   Orientation discrimination in the cat and its cortical loci.  In : Progress in Brain Research, Vol. 95. T.P. Hicks, S. Molotchnikoff and T. Ono (Eds.). Elsevier Science Publishers B.V., 1993, pp 381-400.

• ORBAN G.A., DE WEERD P. & VANDENBUSSCHE E.  Cats discriminate orientations of illusory contours.  In : Comparative Perception, Vol. II : Complex Signals.  W.C. Stebbins & M.A. Berkley (Eds.). John Wiley & Sons, 1990, pp. 157-185.

Abstracts 

• VAN DE VEN V., JANS B., GOEBEL R., & DE WEERD P. fMRI correlates of brightness filling-in in early visual cortex. Soc. Neurosci. Abstr., 2007.

• SCHWARZBACH J. & DE WEERD P. Distinct neural mechanisms for transient and sustained attention revealed by fMRI. HBM Abstr., 2006.

• JANS B., GOEBEL R., & DE WEERD P. Neural correlates of perceptual filling-in in humans. HBM Abstr., 2006.

• PETERS J., DE WEERD P. 7 GOEBEL R. Jumping or zooming to different levels? Neuroimaging & behavioral results of a global-local attention paradigm. Soc. Neurosci. Abstr., 2005.

• DE WEERD P. Perceptual filling-in: More than the eye can see. ECVP Abstr., 2005.

• De Weerd P., Pinaud R. & Tremere L.A. Neural Interpolation Mediated by Intracortical GABA in Visual and Somatosensory Cortices. FeSBE Abstr, 2002.

• Tremere L.A, Pinaud R., Hess FF., Currie R.W. & De Weerd P.  Plasticity-Regulated Immediate Early Gene Expression in the Rat Brain. FeSBE Abstr., 2002.

• Tremere L.A, Pinaud R. & De WEERD P.  Perceptual Completion in Visual and Somatosensory Cortices: Implications for Inhibitory Mechanisms. Soc. Neurosci. Abstr., 2002.

• TOWERS D.N. & DE WEERD P. Two-target visual conjunction search reveals serial component in allocation of attention. Soc. Neurosci. Abstr., 2002.

• HIDE-KI TANAKA & DE WEERD P. Psychophysical estimation of the receptive field size of neurons contributing to selective attention. Soc. Neurosci. Abstr., 2002.

• SMITH E. & DE WEERD P. Interactions between attention and perceptual filling-in. Cognitive Neuroscience Abstract, 2001, pp. 149.

• KIM J.H. & DE WEERD P. Evidence for a serial component in search from a two-target paradigm. Soc. Neurosci. Abstr, 2001, 416.1.

• REINKE K.S., RYAN L., FUGLEVAND, A., JOHNSON J., TROUARD T., SCHNYER D, & DE WEERD P.   Activation of Motor Areas During Bimanual Finger Tapping:  An FMRI Study.  NeuroImage, 2000, 11, 5, S813.

• REINKE K.S., RYAN L., FUGLEVAND A., JOHNSON J., TROUARD T., SCHNYER D, & DE WEERD P.   Activation of Motor Areas During Bimanual Finger Tapping:  An FMRI Study. Soc. Neurosci. Abstr, 2000, pp. 1852.

• BERTINI G., BUFFALO E.A., THAKAR H., JAGADEESH B., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. The effects of V4/TEO lesions on responses of macaque area TE neurons to targets embedded in distracters. EBBS, 1999.

• KASTNER S., DE WEERD P., ELIZONDO M.I.., DESIMONE  R. & UNGERLEIDER L.G. Attentional response modulation in human striate and extrastriate cortex as revealed by functional MRI. Fourth International Conference on Functional Mapping of the Human Brain, 1998.

• KASTNER S., DE WEERD P., GEORGOPOULOS M.A., DESIMONE  R. & UNGERLEIDER L.G. Mechanisms of spatial attention in human extrastriate cortex as revealed by functional MRI. Forum of European Neuroscience, 1998.

• JEZZARD P., KARNI A., KASTNER S., UNGERLEIDER L.G. & DE WEERD P. fMRI Spatial Resolution in the Visual Cortex. Proceedings of the International Society of Magnetic Resonance Medicine, Sydney, Australia, 1998, 3 : 1538.

• KASTNER S., DE WEERD P., ELIZONDO M.I., DESIMONE  R. & UNGERLEIDER L.G. Mechanisms of spatial attention in human extra-striate cortex as revealed by functional MRI. Soc. Neurosci. Abstr, 1998, 24: 1249

• DE WEERD P., KASTNER S., DESIMONE  R. & UNGERLEIDER L.G. Texture segregation in human extrastriate cortex: A functional MRI study. Soc. Neurosci. Abstr, 1998, 24: 1396.

• DE WEERD P., KARNI A., KASTNER S., UNGERLEIDER L.G. & JEZZARD P. An investigation of fMRI resolution in the visual cortex. Third International Conference on Functional Mapping of the Human Brain, 1997.

• KARNI A., BERTINI G., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Perceptual learning of texture discrimination: subject and task dependent variables. Soc. Neurosci. Abstr., 1996, 634.1 : 1614.

• BERTINI G., KARNI A., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Plasticity in macaque visual cortex: comparison of learning-related effects in V1 and V2. Soc. Neurosci. Abstr., 1996, 444.2 : 1122.

• DE WEERD P., HOAG R.A., DESIMONE R. & UNGERLEIDER L.G. Attention deficits after a combined lesion of areas V4 and TEO in a rhesus monkey. Soc. Neurosci. Abstr., 1996, 634.7 : 1615.

• BERTINI G., KARNI A., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. A behavioral and electrophysiological study of monkey visual cortex plasticity. Soc. Neurosci. Abstr., 1995, 117.13 : 276.

• DE WEERD P., HOAG R.A., DESIMONE R. & UNGERLEIDER L.G. A combined lesion of areas V4 and TEO leaves color and shape discriminations largely intact. Soc. Neurosci. Abstr., 1995, 267.6 : 660.

• DE WEERD P., GATTASS R., DESIMONE R. & UNGERLEIDER L.G. Neuronal mechanisms for perceptual filling-in. Soc. Neurosci. Abstr., 1994, 434.4 : 1194.

• NELSON J.I., DE WEERD P., DESIMONE R. & UNGERLEIDER L.G. Responses to a moving Kanisza square in areas V2 and V4 of the monkey.  Soc. Neurosci. Abstr., 1994, 710.3 : 1740.

• VANDENBUSSCHE E., DE WEERD P. & ORBAN G.A.  Texture segregation in the cat: interaction between orientation and contrast.   Invest. Ophthalmol. Vis. Sci., 1993, 34(4) : 1237.

• DE WEERD P., GATTASS R., DESIMONE R. & UNGERLEIDER L.G. Center-surround interactions in areas V2/V3: A possible mechanism for filling-in? Soc. Neurosci. Abstr., 1993, 19.27 : 27.

• UNGERLEIDER L.G., DE WEERD P., MISHKIN M. & DESIMONE R. Cue-dependent deficits in contour orientation discrimination after V4 lesions. Soc. Neurosci. Abstr., 1993, 398.7 : 974.

• DE WEERD P., VANDENBUSSCHE E., ORBAN G.A. & SPRAGUE J.M. Effects of lesions in the visual cortex of the cat on texture segregation.  Perception, 1991, 20 : 86.

• DE WEERD P., SPRAGUE J.M., VANDENBUSSCHE E. & ORBAN G.A.  The effect of lower and higher order visual cortex lesions on illusory contour orientation discrimination and texture segregation in the cat.  Soc. Neurosci. Abstr., 1991, 17 : 1211.

• DE WEERD P., SPRAGUE J.M., VANDENBUSSCHE E. & ORBAN G.A.  Extrastriate lesions and illusory contour orientation discrimination in the cat.  Soc. Neurosci. Abstr., 1990, 16 : 963.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Texture segregation in the cat.  Perception, 1990, 19 : 410.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Texture segmentation in the cat.  Arch. int. Physiol. Biochim., 1989, 97 : P33.

• VANDENBUSSCHE E., DE WEERD P. & ORBAN G.A.  Speed discrimination as a function of stimulus contrast in the Japanese monkey (Macaca fuscata).  Arch. int. Physiol. Biochim., 1989, 97 : P54.

• VANDENBUSSCHE E., SPRAGUE J.M., DE WEERD P. & ORBAN G.A.  Effect of higher cortical ablations on cat orientation discrimination.  Soc. Neurosci. Abstr., 1989, 15 : 1255.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Illusory contour orientation discrimination in the cat.  Soc. Neurosci. Abstr., 1989, 15 : 1255.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Speeding up visual discrimination learning in cats by differential exposure of positive and negative stimuli.  Suppl. Europ. J. Neurosci., 1989, 2 : 313.

• VANDENBUSSCHE E., DE WEERD P., SPRAGUE J. & ORBAN G.A.  The contribution of areas 17 and 18 to line orientation discrimination performance of the cat.  Suppl. Europ. J. Neurosci., 1989, 2 : 323.

• VANDENBUSSCHE E., DE WEERD P., SPRAGUE J. & ORBAN G.A.  The contribution of areas 17 and 18 to line orientation discrimination performance in the cat.  Perception, 1989, 18 : 512-513.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Speeding up learning of visual discrimination by differential exposure of positive and negative stimuli.  Perception, 1989, 18 : 553.

• DE WEERD P., VANDENBUSSCHE E. & ORBAN G.A.  Is the cat able to judge orientation of illusory contours ?  Perception, 1987, 16 : A11.

• SPRAGUE J.M., VANDENBUSSCHE E., ORBAN G.A., GULYAS B. & DE WEERD P.  Effects of area 17 and 18 ablations on line orientation discrimination in the cat.  Soc. Neurosci. Abstr., 1987, 13 : 1450.

• DE WEERD P., ORBAN G.A., VANDENBUSSCHE E. & VOGELS R.  Human discrimination of line orientation for brief stimulus exposures.  Perception, 1986, 15 : A23.

Selected Invited Talks

• May 31^st 2007 Brain mechanisms of perceptual filling-in. Invited lecture at Perception Symposium. Vrije Universiteit Amsterdam, Amsterdam, Netherlands.

• May 14^th 2007 Brain mechanisms of attention. Invited lecture. Utrecht, Netherlands.

• April 15th 2007 The brain’s perception (De hersenen ontmaskerd). Radio Interview at L1 Broadcasting station, Maastricht, Netherlands.

• April 14th 2007 The brain’s perception (De hersenen ontmaskerd). Invited Lecture at the ‘Bonnefanten Museum’ Maastricht, Netherlands.

• April 8^th 2006 Perceptual Filling-in: More than the eye can see. Invited Plenary Lecture at the Tucson Consciousness Conference, Tucson, Arizona, USA.

• April 26^th 2006 Focusing on Attention: Neurocognitive contributions to the study of selective attention. Invited Lecture at NICI, Radboud University Nijmegen, Netherlands.

• August 23^rd 2006 Adult V1 plasticity: Yes or no? Invited lecture at Symposium on Plasticity in the adult brain, FESBE (Brazilian Neuroscience Conference), Sao Paulo, Brazil.

• August 26^th 2006 Neural mechanisms of selective attention: Evidence from monkey physiology, lesions, and human fMRI. Invited lecture at Symposium on Attention and Learning, FESBE (Brazilian Neuroscience Conference), Sao Paulo, Brazil.

• September 22^nd 2006 Sensation and Perception (Zintuiglijke Waarneming). Invited Lecture by the ‘Koninklijke Zeeuwsche Genootschap der Wetenschappen’ and the ‘Natuurkundig gezelschap Middelburg’. Middelburg, Netherlands.

• Jan 18^th 2005 The psychophysics of perceptual filling-in. Luncheon Seminar. Psychology Department, University of Maastricht, Netherlands

• Jan 20^th 2005 From genes to cognition: The molecular basis of perceptual learning. Psychology Department, University of Maastricht, Netherlands

• April 15^th 2005 What lesion experiments can tell you about the neural mechanisms of attention. Colloquiem at Department of Physiology. Section John van Opstal. University of Nijmegen, Netherlands

• June 20^th 2005 What psychophysics can tell you about the neural mechanisms of perceptual filling-in. Colloquium at Charite University, Department of Medicine, Berlin, Germany.

• Mar10^th 2004 Neural mechanisms of attention. Departmental Colloquiem. University of Maastricht, Netherlands

• May14^th 2004 Perceptual filling-in: Evidence for active surface interpolation. NVP Conference. University of Maastricht, Netherlands

• March 2^nd 2001 Re-mapping in M1 and motor learning. Motor-Bytes. Motor Control Group. University of Arizona, Tucson, USA.

• Dec 11^th 2001 Neural mechanisms of contour perception, surface perception, and selective attention. Donders Institute. University of Nijmegen, Netherlands.

• Mar 27^th 2000 Perceptual filling-in: Active neural representation or ignoring the absence of information? Bodian Seminar. The Zanvyl Krieger Mind/Brain Institute, Johns Hopkins University, Baltimore MD, USA.

• Sept 8^th 2000 Mechanisms of selective attention in human and non-human primates. Neurology Grand Rounds, Dept. of Medicine. University of Arizona, Tucson, USA.

• Sept 29^th 2000 Cortical mechanisms of bimanual motor learning. Doings-series. Motor Control Group. University of Arizona, Tucson, USA.

• June 3^rd 1999 Beitraege retinotop geordneter kortikaler Arteal zur anschaulichen Einfuelling. Gehirn und Gestalt Symposium, Hanse Wisschenschaftskolleg, Delmenhorst, Germany.

• July 2^nd, 1999 Contribution of retinotopic cortical areas to perceptual filling-in. Symposium of the International Society for Behavioural Neuroscience, Santorini, Greece.

• Sept 23^rd 1999 Mechanisms of attention in extrastriate visual cortex. Division of Neurobiology, Interdisciplinary Programs in Genetics and Insect Science, University of Arizona, Tucson, USA. 

• Oct 24^th 1999 Physiological, fMRI and lesion data reveal neural mechanisms of attention. Cognitive Science Seminar, Dept. of Psychology, University of Arizona, Tucson, USA.

• Nov 5^th 1999 Contributions of extrastriate visual cortex to attentional selection. Brain and Cognitive Science Departmental Colloquium, Massachusetts Institute of Technology, Boston, USA.

• Sept 24^th 1998 Neuronal mechanisms underlying perceptual filling-in. Integrative Neuroscience Series Presentation. National Institute of Mental Health, Bethesda, MD, USA.

• March 11^th 1997 Mechanisms of visual attention: A lesion study in the rhesus monkey. Medische Faculteit, Katholieke Universiteit te Leuven, Leuven, Belgium.

• March 10^th 1997 Neural mechanisms of perceptual filling-in. Instituut voor Psychologie en Pedagogie, Katholieke Universiteit te Leuven, Leuven, Belgium.

• April 18^th 1997 Neuronal mechanisms of perceptual filling-in. Dept. Cognitive and Computational Sciences, Georgetown University, Washington DC, USA.

• July 7^th 1997 Neuronal mechanisms of perceptual filling-in. Department of Psychology. McGill Univ.  Montreal, Canada.

• March 20st 1996 Neural mechanisms underlying perceptual filling-in. Department of Psychology, Univ. of Arizona, Tucson, USA.

• April 24^th 1996 Neural mechanisms of perceptual filling-in.  Salk Institute, San Diego, USA. 

• October 11^th 1996 Contributions of V4 and TEO in a rhesus monkey to shape discrimination and attention. Univ. di Borgoroma, Dipartimento di Scienze Neurologiche, Verona, Italy.

• October 14^th 1996 A neural substrate for perceptual filling-in in areas V2 and V3 of the rhesus monkey. Univ. di Borgoroma, Dipartimento di Scienze Neurologiche, Verona, Italy.

• October 17^th 1996 Mechanisms of perceptual filling-in. Medical Research Council Applied Psychology Unit, Cambridge, United Kingdom.

• October 21^st 1996 The role of visual cortical areas V4 and TEO in shape perception and attention: A lesion study in the rhesus monkey. Oxford Univ., Department of Experimental Psychology, Oxford, United Kingdom.

• March 20^th 1996 Neural mechanisms of attention: Evidence from physiological, lesion and fMRI studies. School of Medicine, University of Arizona, Tucson, USA.

• August 25^th 1995 Expanding receptive fields in areas V2/V3: a possible basis for perceptual filling-in ? X reniao anual da federacao de sociedades de biologia experimental (FESBE), Serra Negra, Brazil.

• September 25^th 1995 Mechanisms of perceptual filling-in. Univ. do Para, Belem, Brazil

Fellowships and Grants

• December 2005 VICI award NWO (€1,250,000)
• February 2005 Open Competition award NWO (€160,000€)
• September 2000 Award from NIH (R01 MH61972-01) ($375,000)
• December 1999 Award from the Small Grants Program of the University of Arizona ($5,000)
• January 1992 Award from the Collen Foundation of the Catholic University of Louvain ($12,500)
• September 1991 Long term fellowship from the International Human Frontier Science Program

Scientific activities/experience

• Ad Hoc Reviewer for all major journals in the field of neuron-cognition

• Ad Hoc Referee of NIH and NSF grants

Oct.’2003- current     

• Service at University of Maastricht, Netherlands

• Curriculum Committee member

• Member Ethical Committee (ECP) (2005)

• President Committee on Research Infrastructure (COV) (2006)

• Scientific Director Psychology Department (MIPO) (2006)

• Member ad hoc work-groups on (2006)

• NWO initiative behavioral sciences (‘Klankbord’)
• Behavioral Sciences at UM
• Subject Insurance

Oct.’98- Oct 2003      

Service at Psychology Department, University of Arizona, Tucson, USA

• Yearly Member of Graduate Student Selection Committee                 

• Member of two Assistant/Associate Professor Recruitment Committees

Memberships

• Society of Neuroscience
• American Association for the Advancement of Science
• Cognitive Neuroscience Society
• Human Brain Mapping