Research Topics
| Johan WagemansSummaryAffiliation: Katholieke Universiteit Leuven Country: Belgium Publications
| Collaborators
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Detail Information
Publications
Perceived shape similarity among unfamiliar objects and the organization of the human object vision pathwayHans P Op de Beeck
Laboratory of Experimental Psychology, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
J Neurosci 28:10111-23. 2008..Thus, for unfamiliar objects, the organization of human object-selective cortex is strongly related to perceived shape, and this shape-based organization emerges gradually throughout the object vision pathway...
A century of Gestalt psychology in visual perception: I. Perceptual grouping and figure-ground organizationJohan Wagemans
University of Leuven KU Leuven, Laboratory of Experimental Psychology, Tiensestraat 102, Box 3711, BE 3000 Leuven, Belgium
Psychol Bull 138:1172-217. 2012..A better integration of this research tradition with the rest of vision science requires further progress regarding the conceptual and theoretical foundations of the Gestalt approach, which is the focus of a second review article...- A century of Gestalt psychology in visual perception: II. Conceptual and theoretical foundationsJohan Wagemans
Laboratory of Experimental Psychology, University of Leuven KU Leuven
Psychol Bull 138:1218-52. 2012..To answer the fundamental question of why things look as they do, a further synthesis of these complementary perspectives is required. (PsycINFO Database Record (c) 2012 APA, all rights reserved)... - Pictorial depth probed through relative sizesJohan Wagemans
University of Leuven KU Leuven, Laboratory of Experimental Psychology, Tiensestraat 102 Box 3711, BE 3000 Leuven, Belgium E mail
Iperception 2:992-1013. 2011..We discuss a simple formal framework that allows one to handle individual differences. We also compare the depth scale obtained by way of this method with depth scales obtained in totally different ways, finding generally good agreement... - Towards a new kind of experimental psycho-aesthetics? Reflections on the Parallellepipeda projectJohan Wagemans
University of Leuven K U Leuven, Laboratory of Experimental Psychology, Tiensestraat 102 Box 3711, BE 3000 Leuven, Belgium E mail
Iperception 2:648-78. 2011.... - Measuring 3D point configurations in pictorial spaceJohan Wagemans
University of Leuven, Laboratory of Experimental Psychology, Tiensestraat 102 Box 3711, 3000 Leuven, The Netherlands E mail
Iperception 2:77-111. 2011..This is expected on the basis of a formal analysis of monocular optical structure. The method will prove useful in a variety of potential applications... - The shading cue in contextJohan Wagemans
University of Leuven K U Leuven, Laboratory of Experimental Psychology, Tiensestraat 102 bus 3711 3000 Leuven present address Tiensestraat 102 bus 3711 3000 Leuven, Belgium E mail
Iperception 1:159-78. 2010.... 
Identification of everyday objects on the basis of silhouette and outline versionsJohan Wagemans
Department of Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Perception 37:207-44. 2008....- Introduction to Michotte's heritage in perception and cognition researchJohan Wagemans
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Acta Psychol (Amst) 123:1-19. 2006..We hope that the papers in this special issue will serve both to celebrate Michotte's heritage in this respect, and to inspire other investigators to continue the projects he began... - The visual word form area is organized according to orthographyWouter Braet
Laboratory of Experimental Psychology, University of Leuven, Belgium
Neuroimage 59:2751-9. 2012..Given the relationships between the internal organization and how visual input is processed in a brain region, our findings provide important constraints for computational models of how visual word forms are represented in the brain... - The influence of orientation jitter and motion on contour saliency and object identificationGeir Eliassen Nygård
Laboratory of Experimental Psychology, University of Leuven, B 3000 Leuven, Belgium
Vision Res 49:2475-84. 2009..Both contour properties ("good continuation") and object properties (identifiability) had a positive effect on detection and reaction time for identification... - The representation of subordinate shape similarity in human occipitotemporal cortexSven Panis
Laboratory of Experimental Psychology, University of Leuven, Belgium
J Vis 8:9.1-15. 2008..Together, these results suggest a narrow tuning in object-selective cortex for individual exemplars from natural object categories, consistent with an exemplar-based encoding principle... - Detection of symmetry and repetition in one and two objects. Structures versus strategiesArno Koning
University of Leuven, Belgium
Exp Psychol 56:5-17. 2009..We conclude that structural coding, not matching strategies, underlies the one-object advantage for symmetry and the two-objects advantage for repetition... - Identification of everyday objects on the basis of fragmented outline versionsSven Panis
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Perception 37:271-89. 2008.... - Multiple scales of organization for object selectivity in ventral visual cortexMarijke Brants
Laboratory of Biological Psychology, University of Leuven K U Leuven, Leuven, Belgium
Neuroimage 56:1372-81. 2011..This finding confirms the existence of multiple scales of organization in the ventral visual pathway... - Time-course contingencies in perceptual organization and identification of fragmented object outlinesSven Panis
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium
J Exp Psychol Hum Percept Perform 35:661-87. 2009..This new insight can explain why different studies on shape-based object identification have produced seemingly contradictory results... - Subordinate categorization enhances the neural selectivity in human object-selective cortex for fine shape differencesCeline R Gillebert
University of Leuven K U Leuven, Belgium
J Cogn Neurosci 21:1054-64. 2009..This result indicates that the task context during training modulates the extent to which object selectivity is enhanced as a result of training... - Activation of fusiform face area by Greebles is related to face similarity but not expertiseMarijke Brants
University of Leuven K U Leuven, Belgium
J Cogn Neurosci 23:3949-58. 2011..This indicates that the activity in the FFA for Greebles does not depend on the degree of expertise acquired with the objects but on the interpretation of the stimuli as face-related... - Object form discontinuity facilitates displacement discrimination across saccadesMaarten Demeyer
Laboratory of Experimental Psychology, Leuven, Belgium
J Vis 10:17. 2010..We conclude that a strong assumption of visual stability underlies the suppression of transsaccadic change detection performance, the rejection of which generalizes from stimulus form to stimulus position... - Parametric integration of visual form across saccadesMaarten Demeyer
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Vision Res 50:1225-34. 2010..We conclude that integration of parametric visual form information occurs across saccades, but that it relies on a quickly decaying and maskable visual memory... - Similarity, typicality, and category-level matching of morphed outlines of everyday objectsSven Panis
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Perception 37:1822-49. 2008.... - Transsaccadic identification of highly similar artificial shapesMaarten Demeyer
Laboratory of Experimental Psychology, University of Leuven, B 3000 Leuven, Belgium
J Vis 9:28.1-14. 2009.... - Texture and haptic cues in slant discrimination: reliability-based cue weighting without statistically optimal cue combinationPedro Rosas
Department of Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
J Opt Soc Am A Opt Image Sci Vis 22:801-9. 2005..Our results show that the weights for the cues were generally sensitive to their reliability but fell short of statistically optimal combination--we find reliability-based reweighting but not statistically optimal cue combination... - Emergence of perceptual Gestalts in the human visual cortex: the case of the configural-superiority effectJonas Kubilius
University of Leuven, Leuven 3000, Belgium
Psychol Sci 22:1296-303. 2011..These results show how at least some Gestalt phenomena in vision emerge only at the higher stages of visual information processing and suggest that feed-forward processing might be sufficient to produce such phenomena... - Modelling contrast discrimination data suggest both the pedestal effect and stochastic resonance to be caused by the same mechanismRobbe L T Goris
Laboratory for Experimental Psychology, University of Leuven, Tiensestraat, Leuven, Belgium
J Vis 8:17.1-21. 2008.... - Perceptual grouping of object contours survives saccadesMaarten Demeyer
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Leuven, Belgium
PLoS ONE 6:e21257. 2011..We conclude that an intermediate-level description of object shape persists in the visual system across gaze shifts, providing it with a robust basis for balancing efficiency and continuity during scene exploration... - Dynamic norm-based encoding for unfamiliar shapes in human visual cortexSven Panis
University of Leuven K U Leuven, Belgium
J Cogn Neurosci 23:1829-43. 2011.... - Perceptual wholes can reduce the conscious accessibility of their partsErvin Poljac
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Belgium
Cognition 123:308-12. 2012.... - Context modulates the ERP signature of contour integrationBart Machilsen
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Leuven, Belgium
PLoS ONE 6:e25151. 2011..A modulatory effect of context on contour integration was observed on the N1 component. These results highlight the importance of the context in which contour integration takes place... - Perceptual grouping in Gabor lattices: proximity and alignmentPeter M Claessens
University of Leuven, Leuven, Belgium
Percept Psychophys 67:1446-59. 2005..In light of these results, we further motivate the relevance of these stimuli and the associated experimental paradigm... - Dynamic prototypicality effects in visual searchGreet Kayaert
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Tiensestraat 102, Bus 3711, B 3000 Leuven, Belgium
J Exp Psychol Gen 140:506-19. 2011..In general, we show that the prototypical status of a stimulus in visual search is a highly dynamic property, depending on the distribution of stimuli within a shape space but not on familiarity with the prototype... - The representation of perceived shape similarity and its role for category learning in monkeys: a modeling studyHans P Op de Beeck
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Vision Res 48:598-610. 2008..These results show the intimate link between category learning and perceived similarity as represented in IT cortex... - Delayed shape matching benefits from simplicity and symmetryGreet Kayaert
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Vision Res 49:708-17. 2009..Thus, we show that simplicity in general and symmetry in particular enhance the short-term recognition of unfamiliar shapes... - Crowding with conjunctions of simple featuresEndel Põder
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium
J Vis 7:23.1-12. 2007..Feature errors were not purely random, but biased by the features of distractors. We propose a simple feature integration model that predicts most of the observed regularities... - Identification of everyday objects on the basis of kinetic contoursKatrien Segaert
Department of Psychology, University of Leuven, Belgium
Vision Res 49:417-28. 2009..A linear increase in either the speed difference or the direction difference caused a linear decrease in RT for correct identification. In addition, the combination of speed and motion differences appeared to be super-additive... - Some observations on contrast detection in noiseRobbe L T Goris
Laboratory for Experimental Psychology, University of Leuven, Leuven, Belgium
J Vis 8:4.1-15. 2008..Both simple uncertainty reduction and an energy discrimination strategy can be excluded as possible explanations for this effect. We present a quantitative model consistent with the effects and discuss the implications... - Perceptual grouping in haptic search: the influence of proximity, similarity, and good continuationKrista E Overvliet
University of Leuven, Laboratory of Experimental Psychology, Tiensestraat 102 Box 3711, B 3000 Leuven, Belgium
J Exp Psychol Hum Percept Perform 38:817-21. 2012..PsycINFO Database Record (c) 2012 APA, all rights reserved)... - Identification of everyday objects on the basis of Gaborized outline versionsMichaël Sassi
Laboratory of Experimental Psychology, Tiensestraat 102 bus 3711, 3000 Leuven, Belgium
Iperception 1:121-42. 2010.... - A new perceptual bias reveals suboptimal population decoding of sensory responsesTom Putzeys
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium
PLoS Comput Biol 8:e1002453. 2012.... - Integrating biological motion: the role of grouping in the perception of point-light actionsErvin Poljac
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Leuven, Belgium
PLoS ONE 6:e25867. 2011..These results provide evidence that Gestalt principles of good continuity and similarity also apply to more complex and dynamic meaningful stimuli... - Increased Stroop interference with better second-language reading skillWouter Braet
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, Leuven, Belgium
Q J Exp Psychol (Hove) 64:596-607. 2011..We suggest that the lack of consistency in the results of earlier studies may be due, at least in part, to these studies looking at Stroop interference in isolation, rather than comparing interference between languages... - Linking depth to lightness and anchoring within the differentiation-integration formalismNaoki Kogo
Katholieke Universiteit Leuven, Laboratory of Experimental Psychology, B 3000 Leuven, Belgium
Vision Res 50:1486-500. 2010..By applying the same principles to simple figures consisting of black and white areas of different size ratios, the model succeeded in reproducing published empirical results on lightness anchoring (Li & Gilchrist, 1999)... - Integration of contour and surface information in shape detectionBart Machilsen
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium
Vision Res 51:179-86. 2011..Results from Experiment 2 indicate that participants applied a combination rule that was better than mere probability summation. We found no evidence against the integration rule... - The role of vertical mirror symmetry in visual shape detectionBart Machilsen
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium
J Vis 9:11.1-11. 2009..Across the different noise levels, symmetric shapes were easier to detect than asymmetric ones. This finding indicates that vertical mirror symmetry is indeed used as a cue in perceptual grouping... - The influence of orientation and contrast flicker on contour saliency of outlines of everyday objectsGeir Eliassen Nygård
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Belgium
Vision Res 51:65-73. 2011..In addition, we found that object properties, such as identity and complexity, affected detection performance... - A computational model of visual anisotropyBart Ons
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium
PLoS ONE 6:e21091. 2011..We discuss the scope of the theory in the context of other anisotropies in perception... - The awakening of Attneave's sleeping cat: identification of everyday objects on the basis of straight-line versions of outlinesJoeri De Winter
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Perception 37:245-70. 2008..Results are discussed in relation to Attneave's original hypotheses as well as in the light of more recent theories on shape perception and object identification... - Eccentric grouping by proximity in multistable dot latticesLizzy Bleumers
Laboratory of Experimental Psychology, Department of Psychology, Faculty of Psychology and Educational Sciences, K U Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Vision Res 48:179-92. 2008.... - A Bayesian framework for cue integration in multistable grouping: Proximity, collinearity, and orientation priors in zigzag latticesPeter M E Claessens
Laboratory of Experimental Psychology, Department of Psychology, University of Leuven, Belgium
J Vis 8:33.1-23. 2008..H. Elder & R. M. Goldberg, 2002). The potential of hierarchically extended Bayes models for a better understanding of principles in cue integration is discussed... - Sex differences in human virtual water maze performance: novel measures reveal the relative contribution of directional responding and spatial knowledgeDaniel G Woolley
Department of Biomedical Kinesiology, Research Centre for Movement Control and Neuroplasticity, KU Leuven, Heverlee, Belgium
Behav Brain Res 208:408-14. 2010..Instead, the largest sex differences were observed during the initial trajectory phase of the trial, which is thought to depend on effective processing of distal features of the environment... - Perception-action coupling during bimanual coordination: the role of visual perception in the coalition of constraints that govern bimanual actionStephan P Swinnen
Laboratory of Motor Control, Department of Kinesiology, K U Leuven, Tervuursevest 101, B 3001 Heverlee, Belgium
J Mot Behav 36:394-8, 402-7; discussion 408-17. 2004.... - The effects of mirror reflections and planar rotations of pictures on the shape percept of the depicted objectEls V K Cornelis
Industrial Design, Delft University of Technology, Landbergstraat 15, 2628 CC Delft, The Netherlands
Perception 38:1439-66. 2009..In all cases, the differences between the pictorial reliefs could be resolved by affine transformations, and could thus be ascribed to different solutions of the depth ambiguities inherent in pictures... - The influence of motion coherence manipulations on the synchronization level of a perception-action taskTanja Ceux
Motor Learning Laboratory, Department of Kinesiology, Faculty of Kinesiology and Rehabilitation Sciences, Katholieke Universiteit Leuven, Tervuursevest 101, 3001 Leuven, Belgium
Behav Brain Res 162:83-9. 2005..In general, these findings highlighted the impact of the perception of motion based on the level of motion coherence in the visual signal on the synchronization behavior in a perception-action setting... - Removal of BCG artifacts from EEG recordings inside the MR scanner: a comparison of methodological and validation-related aspectsKatrien Vanderperren
Katholieke Universiteit Leuven, Department of Electrical Engineering, ESAT SCD, Leuven, Belgium
Neuroimage 50:920-34. 2010..Moreover, applying OBS prior to ICA can optimize the data quality even more, but caution is recommended since the effect of the additional ICA step may be strongly subject-dependent... - Embodied simulation and the meaning of facial expression in autismKris Evers
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Belgium www gestaltrevision be
Behav Brain Sci 33:445-6. 2010..Second, there is no room for subjective and high-level conceptual processes in the model. Third, disentangling the different stages in the model is very difficult... - Picasso in the mind's eye of the beholder: three-dimensional filling-in of ambiguous line drawingsJan Koenderink
University of Leuven KU Leuven, Laboratory of Experimental Psychology, Belgium
Cognition 125:394-412. 2012..Observers also freely insert "template knowledge" about the structure of familiar generic objects... - Generalization of visual shapes by flexible and simple rulesBart Ons
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Tiensestraat 102, P O Box 3711, B 3000 Leuven, Belgium
Seeing Perceiving 25:237-61. 2012.... - Subjectively interpreted shape dimensions as privileged and orthogonal axes in mental shape spaceBart Ons
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102 bus 3711, B 3000 Leuven, Belgium
J Exp Psychol Hum Percept Perform 37:422-41. 2011..The implications of these findings for shape-based object processing are discussed... - Synchronising horizontal arm movement with transparent motionLizzy Bleumers
Laboratory of Experimental Psychology, Department of Psychology, Faculty of Psychology and Educational Sciences, K U Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Behav Brain Res 173:199-204. 2006..Overall, these results suggest that colour can serve as a strong top-down cue for proper target selection and tracking, provided that bottom-up motion signals are sufficiently strong... - Perceptual saliency of points along the contour of everyday objects: a large-scale studyJoeri De Winter
University of Leuven, Leuven, Belgium
Percept Psychophys 70:50-64. 2008..A point is more salient when the two line segments connecting it with its two neighboring salient points make a sharp turning angle and when the 2-D part defined by the triplet of salient points is less compact and sticks out more... - Switching dynamics of border ownership: a stochastic model for bi-stable perceptionNaoki Kogo
Katholieke Universiteit Leuven, Laboratory of Experimental Psychology, Leuven, Belgium
Vision Res 51:2085-98. 2011..In this framework, the adaptation and the recovery processes need to be perception dependent (not physical input dependent) to reproduce human perception... - Contour-based object identification and segmentation: stimuli, norms and data, and software toolsJoeri De Winter
University of Leuven, Leuven, Belgium
Behav Res Methods Instrum Comput 36:604-24. 2004..g., priming, agnosia, perceptual organization, and picture naming). The full set of norms, data, and stimuli may be downloaded from www.psychonomic.org/archive/... - Segmentation of object outlines into parts: a large-scale integrative studyJoeri De Winter
Department of Psychology, University of Leuven, Tiensestraat 102, B-3000 Leuven, Belgium
Cognition 99:275-325. 2006..Based on these results, a framework is presented in which all of the previously proposed (and now empirically validated) segmentation rules or rules for part formation are integrated... - Distributed subordinate specificity for bodies, faces, and buildings in human ventral visual cortexHans P Op de Beeck
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Belgium Laboratory of Biological Psychology, University of Leuven K U Leuven, Leuven, Belgium
Neuroimage 49:3414-25. 2010.... - Surface construction by a 2-D differentiation-integration process: a neurocomputational model for perceived border ownership, depth, and lightness in Kanizsa figuresNaoki Kogo
Laboratory of Experimental Psychology, Katholieke Universiteit Leuven, Leuven, Belgium
Psychol Rev 117:406-39. 2010.... - The distributed representation of random and meaningful object pairs in human occipitotemporal cortex: the weighted average as a general ruleAnnelies Baeck
Laboratory of Biological Psychology, University of Leuven KU Leuven, Tiensestraat 102, 3000 Leuven, Belgium
Neuroimage 70:37-47. 2013..A weighted average thus relates the response patterns of object pairs to the response patterns of single objects, even when the objects interact... - Artful terms: A study on aesthetic word usage for visual art versus film and musicM Dorothee Augustin
Laboratory of Experimental Psychology, University of Leuven KU Leuven, Tiensestraat 102, Box 3711, 3000 Leuven, Belgium E mail
Iperception 3:319-37. 2012..The results render important information about aesthetic word usage in the realm of the arts and may serve as a starting point to develop tailored measurement instruments for different art forms... - DepthJan J Koenderink
University of Leuven K U Leuven, Laboratory of Experimental Psychology, Tiensestraat 102 Box 3711, BE 3000 Leuven, Belgium, and Delft University of Technology, EEMCS, MMI, Mekelweg 4, NL 2628 CD Delft, The Netherlands E mail
Iperception 2:541-64. 2011..We introduce a number of general ways to design and implement methods of geodesy in pictorial space, and discuss some basic problems associated with such measurements. We deal mainly with conceptual issues... - The concavity effect is a compound of local and global effectsJoachim Vandekerckhove
University of Leuven, Department of Psychology, Leuven, Belgium
Percept Psychophys 69:1253-60. 2007..For our data analysis, we used a nonparametric bootstrap method, which greatly increases sensitivity (compared to more traditional analyses like ANOVA)... - Low-level correlations between object properties and viewpoint can cause viewpoint-dependent object recognitionMaarten Demeyer
University of Leuven, Belgium
Spat Vis 20:79-106. 2007..We conclude that low-level correlations do exist prior to object recognition, and can offer an explanation for some viewpoint effects on the discrimination of metrically manipulated 3-D objects... - Infants and toddlers show enlarged visual sensitivity to nonaccidental compared with metric shape changesGreet Kayaert
Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, B 3000, Leuven, Belgium E mail
Iperception 1:149-58. 2010.... - Empirical aesthetics, the beautiful challenge: An introduction to the special issue on Art & PerceptionM Dorothee Augustin
University of Leuven KU Leuven, Laboratory of Experimental Psychology, Tiensestraat 102, Box 3711, 3000 Leuven, Belgium E mail
Iperception 3:455-8. 2012..The contributions span a wide range of topics, but are all centred around two questions: How can one understand art perception and aesthetics from a psychological point of view, and how is this reflected in art itself?.. - All is beautiful? Generality vs. specificity of word usage in visual aestheticsM Dorothee Augustin
Laboratory of Experimental Psychology, University of Leuven, Belgium
Acta Psychol (Amst) 139:187-201. 2012..Such a common vocabulary should facilitate the development of cross-disciplinary models of aesthetics and create a basis for the construction of standardised aesthetic measures... - The effect of category learning on the representation of shape: dimensions can be biased but not differentiatedHans Op de Beeck
Lab for Neuro and Psychophysiology, University of Leuven, Leuven, Belgium
J Exp Psychol Gen 132:491-511. 2003..Thus, category learning is capable of biasing separable shape dimensions but does not alter the status of dimensions in the visual system as either separable or integral... - Some observations on the effects of slant and texture type on slant-from-texturePedro Rosas
Department of Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Vision Res 44:1511-35. 2004.... - Ambiguous figures: living versus nonliving objectsIlse M Verstijnen
Laboratory of Experimental Psychology, Department of Psychology, University of Leuven, Tiensestraat 102, B 3000 Leuven, Belgium
Perception 33:531-46. 2004..The bias found with figures of living objects may be explained on the basis of top-down processes. For nonliving figures, an hypothesis based on bottom-up processes like neural fatigue was considered but rejected... - What is required for a signal to be qualified as a 'grouping' tag?Naoki Kogo
Laboratory of Experimental Psychology, University of Leuven K U Leuven, Belgium
Br J Psychol 102:676-81; author reply 682-3. 2011..Instead, the perception of the illusory contours corresponds to the existence of border-ownership signals, which reflect the global configuration of the image... - Mental rotation versus invariant features in object perception from different viewpoints: an fMRI studyJan Vanrie
Department of Psychology, University of Leuven, Tiensestraat 102, B-3000 Leuven, Belgium
Neuropsychologia 40:917-30. 2002..Furthermore, some areas were activated uniquely by the rotation condition, probably reflecting the additional processes apparent in the behavioral response patterns... - Offside decisions by expert assistant referees in association football: Perception and recall of spatial positions in complex dynamic eventsBart Gilis
Department of Biomedical Kinesiology, Laboratory of Perception and Performance, Katholieke Universiteit Leuven, Belgium
J Exp Psychol Appl 14:21-35. 2008..Further experimentation is needed to examine whether video- and computer-based decision-making training is effective in improving the decision-making skills of ARs during the game... - Texture and object motion in slant discrimination: failure of reliability-based weighting of cues may be evidence for strong fusionPedro Rosas
Katholieke Universiteit Leuven, Leuven, Belgium
J Vis 7:3. 2007..Furthermore, the fitted motion thresholds as a function of texture type are correlated with the slant thresholds as a function of texture type. One interpretation of such a finding is a strong coupling of cues... - Asymmetries in stimulus comparisons by monkey and manHans Op de Beeck
Laboratorium voor Neuro en Psychofysiologie, K U Leuven, Campus Gasthuisberg, Herestraat 49, B 3000, Leuven, Belgium
Curr Biol 13:1803-8. 2003..Thus, seemingly complex phenomena that occur when human subjects rate stimulus similarity are also present in macaques' similarity judgments and could be based on relatively simple mechanisms... - Effect of benzodiazepines on structural and conceptual/lexical primingMuriel Boucart
CHRU Lille, Hopital Roger Salengro, Exploration Fonctionnelle de la Vision, France
Psychopharmacology (Berl) 165:43-50. 2002..We used a previously developed paradigm to examine whether lorazepam affects visual processes involved in the coding of contour information or conceptual/lexical representations... - Perceptual-motor adaptations in a synchronization task: the joint effects of frequency and motion coherence manipulationsTanja Ceux
Department of Biomedical Kinesiology, Motor Learning Laboratory, Faculty of Kinesiology and Rehabilitation Sciences, Katholieke Universiteit Leuven, Tervuursevest 101, 3001 Leuven, Belgium
Behav Brain Res 168:226-35. 2006..In general, these findings provided evidence for the important role of perceptual constraints on perception-action coupling in this type of synchronization task... - Goodness of regularity in dot patterns: global symmetry, local symmetry, and their interactionsMassimo Nucci
Dipartimento di Psicologia Generale, Universita di Padova, Italy
Perception 36:1305-19. 2007..The results confirmed our hypothesis, showing that performance in this regularity-detection task did not increase in a linear way when some symmetries were added to other symmetries...