Research Topics
| C M SchorSummaryAffiliation: University of California Country: USA Publications
| Collaborators
|
Detail Information
Publications
Saccades reduce latency and increase velocity of ocular accommodationC M Schor
School of Optometry, Vision Science Group, University of California, Berkeley 94720 2020, USA
Vision Res 39:3769-95. 1999..J., & Cumming, B. G. (1986). Journal of Neurophysiology, 55, 915-930; Zhang, Y., Mays, L. E., & Gamli, P. D. R. (1992). Journal of Neurophysiology, 67, 944-960]...- Pulse-step models of control strategies for dynamic ocular accommodation and disaccommodationClifton M Schor
School of Optometry, University of California at Berkeley, Berkeley, CA 94720, USA
Vision Res 46:242-58. 2006..Mismatched amplitudes of phasic-velocity and tonic-position signals in disaccommodation produce unstable step responses... 
Adaptive calibration of dynamic accommodation--implications for accommodating intraocular lensesClifton M Schor
School of Optometry and Vision Science, University of California at Berkeley, Berkeley, CA 94720, USA
J Refract Surg 24:984-90. 2008..Using human experiments, we also investigated whether the accommodative system has the capacity for adaptive recalibration in response to changes in lens biomechanics...- Adaptive control of vergence in humansClifton M Schor
University of California at Berkeley, School of Optometry, Berkeley, California 94720, USA
Ann N Y Acad Sci 956:297-305. 2002..Passive orbital mechanics simplify the neural control for precise vertical vergence and cyclovergence that are needed to achieve binocular alignment under open-loop conditions in response to perceived spatial location... - Plasticity of convergence-dependent variations of cyclovergence with vertical gazeC M Schor
School of Optometry, University of California, Berkeley CA 94720 2020, USA
Vision Res 41:3353-69. 2001.... - Envelope size tuning for stereo-depth perception of small and large disparitiesC M Schor
School of Optometry, University of California, 360 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 41:2555-67. 2001..Thus it would appear that envelope size and, to a greater extent, temporal synchrony of the dichoptic stimuli [Perception 24 (1995) 33] are the primary means for selecting matched binocular inputs for transient stereopsis... - Dynamic performance of accommodating intraocular lenses in a negative feedback control system: a simulation-based studyClifton M Schor
Vision Science Group, School of Optometry, University of California at Berkeley, Berkeley, CA 94720 2020, USA
Comput Biol Med 37:1020-35. 2007..Simulations indicate that neural control must be recalibrated to avoid unstable dynamic accommodation with A-IOLs. An interactive web-model of A-IOL illustrating these properties is available at http://schorlab.berkeley.edu... - Spatial-frequency and contrast tuning of the transient-stereopsis systemC M Schor
School of Optometry, University of California, Berkeley 94720, USA
Vision Res 38:3057-68. 1998.... - A cross-coupling model of vertical vergence adaptationJ W McCandless
Vision Science Group, School of Optometry, University of California, Berkeley 94720, USA
IEEE Trans Biomed Eng 43:24-34. 1996..The model provides a biologically plausible mechanism for vertical vergence adaptation... - Orientation tuning of the transient-stereopsis systemM Edwards
School of Optometry, University of California, Berkeley 94720, USA
Vision Res 39:2717-27. 1999.... - Adaptation of torsional eye alignment in relation to smooth pursuit and saccadesJ S Maxwell
University of California, 360 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 41:3735-49. 2001..During saccades, the dynamics of the cyclovergence training aftereffect more closely resembled the dynamics of cyclofusional movements than the dynamics of the saccades with which they were associated... - Depth aliasing by the transient-stereopsis systemM Edwards
School of Optometry, University of California, Berkeley 94720, USA
Vision Res 39:4333-40. 1999..e. it was phase, not absolute disparity dependent. Based upon these results, we conclude that while the sustained system implements the half-cycle disparity-processing limit, the transient system does not... - How does saccade adaptation affect visual perception?Teresa D Hernandez
Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA
J Vis 8:3.1-16. 2008..Changes in perceived direction resulting from saccade adaptation are mainly influenced by extra-retinal factors with a small retinal component in the lengthening condition... - Context-specific adaptation of vertical vergence to correlates of eye positionC M Schor
Vision Science Group, School of Optometry, University of California, Berkeley 94720, USA
Vision Res 37:1929-37. 1997..The results are modeled with an association matrix whose inputs are two classes of eye position and whose weighted output is vertical vergence... - Lens induced aniso-accommodationL Marran
Vision Science Group, University of California, Berkeley 94720, USA
Vision Res 38:3601-19. 1998..Aniso-accommodation also may provide an appropriate efferent feedback signal for each eye's unique refractive error which could be used to guide developmental isometropization (attainment of equal refractive error in the two eyes.)... - Envelope size-tuning for transient disparity vergenceM Sato
Vision Science Group, School of Optometry, 360 Minor Hall, University of California at Berkeley, Berkeley, CA 94720-2020, USA
Vision Res 41:1695-707. 2001..However, the transient-vergence system also responds to monocular, hemi-retinal stimuli over a larger (3-octave) range. Thus some of the observed "binocular tuning" may be due to these monocular responses... - First- and second-order processing in transient stereopsisM Edwards
School of Optometry, University of California, 94720, Berkeley, CA, USA
Vision Res 40:2645-51. 2000..This finding of interaction between first- and second-order stereoscopic processing is different from the independence that has been found with the motion system... - The coordination of binocular eye movements: vertical and torsional alignmentJames S Maxwell
University of California, 360 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 46:3537-48. 2006.... - The extended horopter: quantifying retinal correspondence across changes of 3D eye positionKai M Schreiber
School of Optometry, University of California, Berkeley, CA, USA
J Vis 6:64-74. 2006.... - A pulse-step model of accommodation dynamics in the aging eyeClifton M Schor
School of Optometry, University of California at Berkeley, Vision Science Group, 512 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 45:1237-54. 2005..The model illustrates a neural control strategy that is similar to the classical neural control model of step changes by the saccadic and vergence systems... - A virtual ophthalmotrope illustrating oculomotor coordinate systems and retinal projection geometryKai M Schreiber
School of Optometry, UC Berkeley, Berkeley, CA, USA
J Vis 7:4.1-14. 2007..The virtual ophthalmotrope shows the influence of these oculomotor patterns on retinal projection geometry... - Symmetrical horizontal vergence contributes to the asymmetrical pursuit of targets in depthJames S Maxwell
University of California, 360 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 44:3015-24. 2004.... 
Neuromuscular plasticity and rehabilitation of the ocular near responseClifton M Schor
School of Optometry, University of California, Berkeley, CA 94720 2020, USA
Optom Vis Sci 86:E788-802. 2009..The adaptable near-response couplings form the basis of an area of orthoptics that optimizes visual performance by facilitating our natural ability to calibrate neural pathways underlying binocular postural reflexes...- Eye movements facilitate stereo-slant discrimination when horizontal disparity is noisyEllen M Berends
Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA
J Vis 3:780-94. 2003..Both methods elevated slant-discrimination thresholds when horizontal disparity noise was present, suggesting that vertical disparity is used as a cue for azimuth... - Thresholds for stereo-slant discrimination between spatially separated targets are influenced mainly by visual and memory factors but not oculomotor instabilityZhi Lei Zhang
Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA
J Vis 3:710-24. 2003..Thus, oculomotor error increases with target separation, and it is an important factor in stereo-depth discrimination... - Comparison of the time courses of concomitant and nonconcomitant vertical phoria adaptationErich W Graf
Vision Science Group, Department of Optometry, University of California-Berkeley, 360 Minor Hall, School of Optometry, Berkeley, CA 94720-2020, USA
Vision Res 43:567-76. 2003..The results support the notion that concomitant and nonconcomitant phoria adaptation involve different mechanisms but not the contention that adaptation to prisms is easier or more robust than adaptation to lenses... - The first and second order dynamics of accommodative convergence and disparity convergenceJames Maxwell
University of California at Berkeley, 360 Minor Hall, Berkeley, CA 94720, United States
Vision Res 50:1728-39. 2010.... - Charles F. Prentice award lecture 2008: surgical correction of presbyopia with intraocular lenses designed to accommodateClifton M Schor
School of Optometry, University of California, Berkeley, Berkeley, California 94720 2020, USA
Optom Vis Sci 86:E1028-41. 2009..Other design issues for A-IOLs include stability of optical properties, aberrations and image quality, and interactions of restored accommodation with binocular eye alignment (the near response)... - Unconstrained stereoscopic matching of linesR van Ee
School of Optometry, University of California, Berkeley, USA
Vision Res 40:151-62. 2000..This operating range can be extended vertically when matches are constrained by image primitives... - The effect of target proximity on the aniso-accommodative responseL Marran
School of Optometry, University of California, Berkeley 94720, USA
Ophthalmic Physiol Opt 19:376-92. 1999..Alternatively, these subjects may have had a lower threshold to proximal stimuli and experienced target proximity at the more distant (1 m) viewing condition... - Variation of binocular-vertical fusion amplitude with convergenceShrikant R Bharadwaj
School of Optometry, University of California at Berkeley, Berkeley, CA, USA
Invest Ophthalmol Vis Sci 48:1592-600. 2007..VFA at several convergence angles was measured to obtain a quantitative description of the changes in VFA with convergence... - The surface of the empirical horopterKai M Schreiber
School of Optometry, University of California at Berkeley, CA, USA
J Vis 8:7.1-20. 2008.... - The influence of first near-spectacle reading correction on accommodation and its interaction with convergenceIndu Vedamurthy
School of Optometry, University of California at Berkeley, Berkeley, California 94720, USA
Invest Ophthalmol Vis Sci 50:4215-22. 2009.... - Initial destination of the disaccommodation step responseShrikant R Bharadwaj
School of Optometry, University of California at Berkeley, 94720, USA
Vision Res 46:1959-72. 2006..These observations suggest that cycloplegic refractive state is a good behavioral correlate of initial destination of disaccommodation step responses... - Adaptation to the induced effect stimulus normalizes surface slant perception and recalibrates eye position signals for azimuthBaoxia Liu
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA
J Vis 5:808-22. 2005.... - Fatigue reduces tonic accommodationS Hasebe
360 Minor Hall, School of Optometry, Vision Science Group, University of California-Berkeley, Berkeley, CA 94720-2020, USA
Ophthalmic Physiol Opt 21:151-60. 2001..Accommodative fatigue could be responsible for the lower values of TA observed in counter-adaptive responses to sustained accommodative or convergence effort... - Spatial interactions minimize relative disparity between adjacent surfacesZ Zhang
School of Optometry, University of California, Berkeley, CA 94720, USA
Vision Res 41:2995-3007. 2001..uncrossed), an idiosyncratic depth bias served as a tie-breaker. The present results show that absolute disparity matches are constrained to minimize relative disparity between adjacent features... - Acceleration characteristics of human ocular accommodationShrikant R Bharadwaj
Vision Science Group, School of Optometry, University of California at Berkeley, 512 Minor Hall, Berkeley, CA 94720-2020, USA
Vision Res 45:17-28. 2005.... - Temporal aspects of spatial interactions affecting stereo-matching solutionsZhi Lei Zhang
Program in Vision Science, University of California at Berkeley, Berkeley, CA 94720 2020, USA
Vision Res 44:3183-92. 2004..Likelihood of MRD decreased as ISI increased (48.9 ms time constant) and increased as contrast was reduced for short ISIs, suggesting that monocular persistence (temporal impulse response) underlies the temporal interaction... - Perisaccadic stereo depth with zero retinal disparityZhi Lei Zhang
School of Optometry, University of California at Berkeley, Berkeley, CA 94720 2020, USA
Curr Biol 20:1176-81. 2010..This is the first demonstration that a coding scheme other than retinal disparity has a role in human stereopsis... - Effects of partial occlusion on perceived slant differenceBaoxia Liu
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA
J Vis 5:969-82. 2005..The effect of the occluder on perceived slant differences could have resulted from either a reduction of slant contrast or an increase of slant assimilation... - Dynamic control of ocular disaccommodation: first and second-order dynamicsShrikant R Bharadwaj
School of Optometry, University of California at Berkeley, CA 94720, USA
Vision Res 46:1019-37. 2006..Large discrepancies between the primary destination and desired final position appear to produce overshoots and oscillations of small responses from proximal starting positions... - Illusory contrast-induced shifts in binocular visual direction bias saccadic eye movements toward the perceived target positionJulia A Weiler
School of Optometry, University of California, Berkeley, CA 94720 2020, USA
J Vis 7:3.1-18. 2007..The oculomotor system, however, was close to following linear summation... - Changes in cyclotorsion and vertical eye alignment during prolonged monocular occlusionErich W Graf
Vision Science Group, Department of Optometry, University of California-Berkeley, 360 Minor Hall, Berkeley, CA 94720-2020, USA
Vision Res 42:1185-94. 2002..Simulations with Orbit(TM) suggest that these non-concomitant changes in vertical phoria with a concomitant excyclophoria may be based upon orbital mechanics. Excyclophoria appears to be the baseline state of binocular alignment... - Effects of luminance and saccadic suppression on perisaccadic spatial distortionsZhi Lei Zhang
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA
J Vis 8:22.1-18. 2008..To explain these effects, we propose that stimulus-dependent nonlinearities (contrast gain control and saccadic suppression) influence the duration of the temporal impulse response of both single- and double-flashed stimuli... - Stereo-slant adaptation is high level and does not involve disparity codingEllen M Berends
Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
J Vis 5:71-80. 2005..These results suggest that two types of adaptation occurred, namely adaptation on a mapping/perception level and adaptation contingent on distance...