Shared computational mechanism for tilt compensation accounts for biased verticality percepts in motion and pattern vision

被引:91
作者
De Vrijer, M. [1 ,2 ]
Medendorp, W. P. [2 ,3 ]
Van Gisbergen, J. A. M. [1 ]
机构
[1] Radboud Univ Nijmegen, Dept Biophys, Inst Neurosci, NL-6500 HB Nijmegen, Netherlands
[2] Radboud Univ Nijmegen, Nijmegen Inst Cognit & Informat, NL-6525 ED Nijmegen, Netherlands
[3] Radboud Univ Nijmegen, FC Donders Ctr Cognit Neuroimaging, NL-6525 ED Nijmegen, Netherlands
关键词
D O I
10.1152/jn.00921.2007
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
To determine the direction of object motion in external space, the brain must combine retinal motion signals and information about the orientation of the eyes in space. We assessed the accuracy of this process in eight laterally tilted subjects who aligned the motion direction of a random-dot pattern (30% coherence, moving at 6 degrees/s) with their perceived direction of gravity (motion vertical) in otherwise complete darkness. For comparison, we also tested the ability to align an adjustable visual line (12 degrees diameter) to the direction of gravity (line vertical). For small head tilts (<40 degrees), systematic errors in either task were almost negligible. In contrast, tilts > 60 degrees revealed a pattern of large systematic errors (often >30 degrees) that was virtually identical in both tasks. Regression analysis confirmed that mean errors in the two tasks were closely related, with slopes close to 1.0 and correlations >0.89. Control experiments ruled out that motion settings were based on processing of individual single-dot paths. We conclude that the conversion of both motion direction and line orientation on the retina into a spatial frame of reference involves a shared computational strategy. Simulations with two spatial-orientation models suggest that the pattern of systematic errors may be the downside of an optimal strategy for dealing with imperfections in the tilt signal that is implemented before the reference-frame transformation.
引用
收藏
页码:915 / 930
页数:16
相关论文
共 74 条
  • [1] Self-motion-induced eye movements: Effects on visual acuity and navigation
    Angelaki, DE
    Hess, BJM
    [J]. NATURE REVIEWS NEUROSCIENCE, 2005, 6 (12) : 966 - 976
  • [2] Aubert H., 1861, VIRCHOWS ARCH, V20, P381, DOI [DOI 10.1007/BF02355256, 10.1007/BF02355256]
  • [3] BATSCHELET E, 1981, MATH BIOL CIRCULAR S
  • [4] The perception of body verticality (subjective postural vertical) in peripheral and central vestibular disorders
    Bisdorff, AR
    Wolsley, CJ
    Anastasopoulos, D
    Bronstein, AM
    Gresty, MA
    [J]. BRAIN, 1996, 119 : 1523 - 1534
  • [5] Localization of the subjective vertical during roll, pitch, and recumbent yaw body tilt
    Bortolami, Simone B.
    Pierobon, Alberto
    DiZio, Paul
    Lackner, James R.
    [J]. EXPERIMENTAL BRAIN RESEARCH, 2006, 173 (03) : 364 - 373
  • [6] The psychophysics toolbox
    Brainard, DH
    [J]. SPATIAL VISION, 1997, 10 (04): : 433 - 436
  • [7] BRANDT T, 1974, EXP BRAIN RES, V21, P337
  • [8] Reciprocal inhibitory visual-vestibular interaction - Visual motion stimulation deactivates the parieto-insular vestibular cortex
    Brandt, T
    Bartenstein, P
    Janek, A
    Dieterich, M
    [J]. BRAIN, 1998, 121 : 1749 - 1758
  • [9] The vestibular cortex - Its locations, functions, and disorders
    Brandt, T
    Dieterich, M
    [J]. OTOLITH FUNCTION IN SPATIAL ORIENTATION AND MOVEMENT, 1999, 871 : 293 - 312
  • [10] VESTIBULAR CORTEX LESIONS AFFECT THE PERCEPTION OF VERTICALITY
    BRANDT, T
    DIETERICH, M
    DANEK, A
    [J]. ANNALS OF NEUROLOGY, 1994, 35 (04) : 403 - 412