C J Erkelens

Summary

Affiliation: Utrecht University
Country: The Netherlands

Publications

  1. ncbi request reprint Perceived direction during monocular viewing is based on signals of the viewing eye only
    C J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA, Utrecht, The Netherlands
    Vision Res 40:2411-9. 2000
  2. ncbi request reprint Organisation of signals involved in binocular perception and vergence control
    C J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA, Utrecht, The Netherlands
    Vision Res 41:3497-503. 2001
  3. ncbi request reprint Monocular symmetry in binocular vision
    Casper J Erkelens
    Utrecht University, Helmholtz Institute, Utrecht, The Netherlands
    J Vis 7:5. 2007
  4. ncbi request reprint The role of the cyclopean eye in vision: sometimes inappropriate, always irrelevant
    Casper J Erkelens
    Helmholtz Institute, Utrecht University P O Box 80 000, 3508 TA, Utrecht, The Netherlands
    Vision Res 42:1157-63. 2002
  5. ncbi request reprint Coordination of smooth pursuit and saccades
    Casper J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA Utrecht, The Netherlands
    Vision Res 46:163-70. 2006
  6. ncbi request reprint Multi-coloured stereograms unveil two binocular colour mechanisms in human vision
    Casper J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA Utrecht, The Netherlands
    Vision Res 42:1103-12. 2002
  7. ncbi request reprint A computational model of depth perception based on headcentric disparity
    C J Erkelens
    Helmholtz Institute, Utrecht University, The Netherlands
    Vision Res 38:2999-3018. 1998
  8. pmc Depth cues, rather than perceived depth, govern vergence
    D A Wismeijer
    Helmholtz Institute, Department Physics of Man, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
    Exp Brain Res 184:61-70. 2008
  9. ncbi request reprint Capture of the visual direction of monocular objects by adjacent binocular objects
    C J Erkelens
    Helmholtz Instituut, Utrecht University, The Netherlands
    Vision Res 37:1735-45. 1997
  10. ncbi request reprint Control of fixation duration in a simple search task
    I T Hooge
    Helmholtz Institute, Utrecht University, The Netherlands
    Percept Psychophys 58:969-76. 1996

Detail Information

Publications32

  1. ncbi request reprint Perceived direction during monocular viewing is based on signals of the viewing eye only
    C J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA, Utrecht, The Netherlands
    Vision Res 40:2411-9. 2000
    ..This conclusion challenges the prevailing concept of cyclopean vision and current views about stereoscopic depth perception...
  2. ncbi request reprint Organisation of signals involved in binocular perception and vergence control
    C J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA, Utrecht, The Netherlands
    Vision Res 41:3497-503. 2001
    ..The discussion leads to suggesting a headcentric organisation of signals involved in binocular perception and a retinal organisation of signals involved in vergence control...
  3. ncbi request reprint Monocular symmetry in binocular vision
    Casper J Erkelens
    Utrecht University, Helmholtz Institute, Utrecht, The Netherlands
    J Vis 7:5. 2007
    ..We conclude that observers use either of the two monocular 2-D images separately but not a single cyclopean view-nicely dovetailing with what they do when they assess both 3-D visual direction and 3-D shape-to assess 3-D symmetry...
  4. ncbi request reprint The role of the cyclopean eye in vision: sometimes inappropriate, always irrelevant
    Casper J Erkelens
    Helmholtz Institute, Utrecht University P O Box 80 000, 3508 TA, Utrecht, The Netherlands
    Vision Res 42:1157-63. 2002
    ..The concept of the cyclopean eye is sometimes inappropriate and always irrelevant as far as vision is concerned...
  5. ncbi request reprint Coordination of smooth pursuit and saccades
    Casper J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA Utrecht, The Netherlands
    Vision Res 46:163-70. 2006
    ..Furthermore, pursuit changes are made fast. Directional changes occur almost entirely within the accompanying saccade. To explain the results we hypothesize a two-stage mechanism for the coordinated generation of saccades and pursuit...
  6. ncbi request reprint Multi-coloured stereograms unveil two binocular colour mechanisms in human vision
    Casper J Erkelens
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA Utrecht, The Netherlands
    Vision Res 42:1103-12. 2002
    ..We suggest that during binocular viewing the fast process of binocular colour mixing masks the changes in colour appearance produced by the much slower process of binocular colour induction...
  7. ncbi request reprint A computational model of depth perception based on headcentric disparity
    C J Erkelens
    Helmholtz Institute, Utrecht University, The Netherlands
    Vision Res 38:2999-3018. 1998
    ..The model explains existing data on whole-field disparity transformations as well as hitherto unexplained aspects of stereoscopic depth perception...
  8. pmc Depth cues, rather than perceived depth, govern vergence
    D A Wismeijer
    Helmholtz Institute, Department Physics of Man, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
    Exp Brain Res 184:61-70. 2008
    ..Collectively our results show that depth cues rather than perceived depth govern vergence...
  9. ncbi request reprint Capture of the visual direction of monocular objects by adjacent binocular objects
    C J Erkelens
    Helmholtz Instituut, Utrecht University, The Netherlands
    Vision Res 37:1735-45. 1997
    ..The phenomenon of binocular capture has negative consequences for the general use of nonius lines as indicators of eye position...
  10. ncbi request reprint Control of fixation duration in a simple search task
    I T Hooge
    Helmholtz Institute, Utrecht University, The Netherlands
    Percept Psychophys 58:969-76. 1996
    ..The results support a preprogramming model of the control of fixation duration. In a simple search task, control of fixation duration appears to be indirect...
  11. doi request reprint Depth cue combination in spontaneous eye movements
    D A Wismeijer
    Physics of Man, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
    J Vis 10:25. 2010
    ..We also measured vergence, which allowed us to calculate the orientation of the plane fitted to points scanned in depth. Contrary to perception and saccades, vergence was dominated by a single cue, binocular disparity...
  12. ncbi request reprint Capture of visual direction: an unexpected phenomenon in binocular vision
    C J Erkelens
    Helmholtz Instituut, Utrecht University, The Netherlands
    Vision Res 37:1193-6. 1997
    ..This mechanism ensures that, despite eye movements, objects have the same spatial order in monocular and binocular vision. This conservation of spatial order also explains why retinal blind spots are not manifest in binocular vision...
  13. ncbi request reprint Strength of depth effects induced by three types of vertical disparity
    E M Berends
    Helmholtz Institute, Utrecht University, P O Box 80000, 3508 TA Utrecht, Netherlands
    Vision Res 41:37-45. 2001
    ..The different ratios for different types of vertical disparity suggest that weighting is specific for each type of vertical disparity and the associated oculomotor signal...
  14. ncbi request reprint Binocular alignment in different depth planes
    C J Erkelens
    Helmholtz Instituut, Utrecht University, The Netherlands
    Vision Res 36:2141-7. 1996
    ..This difference is perceived shape is not possible if the centre of binocular direction has a fixed position in the head...
  15. ncbi request reprint Contribution of disparity to the perception of 3D shape as revealed by bistability of stereoscopic Necker cubes
    C J Erkelens
    Helmholtz Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
    Seeing Perceiving 25:561-76. 2012
    ..I propose a framework for 3D shape perception in which 3D shape is inferred from pictorial cues acting on luminance- and disparity-defined 2D shapes...
  16. ncbi request reprint Anisotropy in Werner's binocular depth-contrast effect
    R van Ee
    Utrecht University, Vakgroep Fysica v d Mens, The Netherlands
    Vision Res 36:2253-62. 1996
    ....
  17. ncbi request reprint Peripheral vision and oculomotor control during visual search
    I T Hooge
    Helmholtz Instituut, Utrecht University, The Netherlands
    Vision Res 39:1567-75. 1999
    ..The results of the present experiment suggest that, besides the difficulty of the peripheral selection task, fixation duration is an important factor determining the selection of potential targets for eye movements...
  18. ncbi request reprint Coarse-to-fine eye movement strategy in visual search
    E A B Over
    Physics of Man, Helmholtz Institute, Utrecht University, The Netherlands
    Vision Res 47:2272-80. 2007
    ..We hypothesize an intrinsic coarse-to-fine strategy for visual search that is even used when such a strategy is not optimal...
  19. ncbi request reprint Adaptation to disparity but not to perceived depth
    E M Berends
    Helmholtz Institute, Utrecht University, P O Box 80000, 3508 TA, Utrecht, The Netherlands
    Vision Res 41:883-92. 2001
    ..We conclude that the visual system can adapt to disparity signals in the absence of a perceptual drive...
  20. ncbi request reprint Bi-stability in perceived slant when binocular disparity and monocular perspective specify different slants
    Raymond van Ee
    Utrecht University, Helmholtz Institute, Utrecht, The Netherlands
    J Vis 2:597-607. 2002
    ..More interestingly, when the monocular--and binocular-specified orientations were rather different, observers experienced perceptual bi-stability (they were able to select either a perspective--or a disparity-dominated percept)...
  21. doi request reprint Dichoptic masking and binocular rivalry share common perceptual dynamics
    Jeroen J A van Boxtel
    Department Physics of Man, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
    J Vis 7:3.1-11. 2007
    ..We suggest that binocular rivalry and dichoptic masking may be mediated by the same inhibitory mechanisms...
  22. pmc The role of temporally coarse form processing during binocular rivalry
    Jeroen J A van Boxtel
    Department of Physics, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
    PLoS ONE 3:e1429. 2008
    ..Together, our findings demonstrate that binocular conflict resolution depends on temporally coarse form-based processing, possibly originating in the ventral visual pathway...
  23. ncbi request reprint A single motion system suffices for global-motion perception
    Jeroen J A van Boxtel
    Department Physics of Man, Helmholtz Institute, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
    Vision Res 46:4634-45. 2006
    ..These results speak against a bipartite global-motion system. Model simulations indicate that present and previous experimental results can be produced by a single motion system providing that the mechanisms within it are speed-tuned...
  24. ncbi request reprint A single system explains human speed perception
    Jeroen J A van Boxtel
    Department Physics of Man, Helmholtz Institute, Utrecht University, The Netherlands
    J Cogn Neurosci 18:1808-19. 2006
    ..These findings have important implications for computational models of motion processing and the low-level organization of the process...
  25. ncbi request reprint A quantitative measure for the uniformity of fixation density: The Voronoi method
    Eelco A B Over
    Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
    Behav Res Methods 38:251-61. 2006
    ..Not only are these measures objective and quantitative, they also have a simple intuitive meaning: They may be thought of as reflecting the clustering of fixations...
  26. ncbi request reprint Temporal properties of disparity processing revealed by dynamic random-dot stereograms
    Elena Gheorghiu
    Helmholtz Institute, Utrecht University, The Netherlands
    Perception 34:1205-19. 2005
    ....
  27. ncbi request reprint Cause of kinematic differences during centrifugal and centripetal saccades
    Ansgar R Koene
    Department Physics of Man, Faculty of Physics and Astronomy, Utrecht University, Princetonplein 5, 3584 CC Utrecht, Netherlands
    Vision Res 42:1797-808. 2002
    ..Based on these simulations we show that the cause of the kinematic differences between the centrifugal and centripetal saccades is the non-linear force-velocity relationship (i.e. muscle viscosity) of the muscles...
  28. ncbi request reprint Differences in perceived depth for temporally correlated and uncorrelated dynamic random-dot stereograms
    Elena Gheorghiu
    Physics of Man Department, Helmholtz Institute, Utrecht University, Pricetonplain 5, P O Box 80 000, 3508 TA Utrecht, The Netherlands
    Vision Res 45:1603-14. 2005
    ....
  29. ncbi request reprint Properties of 3D rotations and their relation to eye movement control
    Ansgar R Koene
    Helmholtz Institute, Physics, Utrecht University, The Netherlands
    Biol Cybern 90:410-7. 2004
    ..Finally, we investigate the consequences of assuming fixed muscle pulley locations when modeling the control of eye movements...
  30. ncbi request reprint Perceived slant from Werner's illusion affects binocular saccadic eye movements
    Martin H Both
    Utrecht University, Helmholtz Institute, Utrecht, The Netherlands
    J Vis 3:685-97. 2003
    ..This study shows that saccadic eye movements are determined predominantly by the disparity-defined slant, but they can be affected by perceived slant, particularly when multiple saccades are being made...
  31. ncbi request reprint Vertical disparity can alter perceived direction
    Ellen M Berends
    Helmholtz Institute, Utrecht University, PO Box 80000, NL 3508 TA Utrecht, The Netherlands
    Perception 31:1323-33. 2002
    ..We argue that vertical disparity is a factor in the calibration of the relationship between eye-position signals and perceived direction...
  32. ncbi request reprint Spatial-scale interaction in human stereoscopic vision in response to sustained and transient stimuli
    Elena Gheorghiu
    Helmholtz Institute, Utrecht University, P O Box 80 000, 3508 TA Utrecht, The Netherlands
    Vision Res 44:563-75. 2004
    ..This study provides experimental evidence for a hierarchical organisation of spatial scales in human stereoscopic vision based on neural interaction instead of vergence eye movements...