Flexible Retinotopy: Motion-Dependent Position Coding in the Visual Cortex

Although the visual cortex is organized retinotopically, it is not clear whether the cortical representation of position necessarily reflects perceived position. Using functional magnetic resonance imaging (fMRI), we show that the retinotopic representation of a stationary object in the cortex was systematically shifted when visual motion was present in the scene. Whereas the object could appear shifted in the direction of the visual motion, the representation of the object in the visual cortex was always shifted in the opposite direction. The results show that the representation of position in the primary visual cortex, as revealed by fMRI, can be dissociated from perceived location.

[1]  D. Somers,et al.  Functional MRI reveals spatially specific attentional modulation in human primary visual cortex. , 1999, Proceedings of the National Academy of Sciences of the United States of America.

[2]  R. Snowden,et al.  Shifts in perceived position following adaptation to visual motion , 1998, Current Biology.

[3]  A. T. Smith,et al.  Sharpening of drifting, blurred images , 1995, Vision Research.

[4]  Kuno Kirschfeld,et al.  The Fröhlich effect: a consequence of the interaction of visual focal attention and metacontrast , 1999, Vision Research.

[5]  David Whitney,et al.  Motion distorts visual space: shifting the perceived position of remote stationary objects , 2000, Nature Neuroscience.

[6]  R. L. Valois,et al.  Vernier acuity with stationary moving Gabors , 1991, Vision Research.

[7]  M. Georgeson,et al.  Seeing blur: ‘motion sharpenin’ without motion , 2002, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[8]  Shin'ya Nishida,et al.  Influence of motion signals on the perceived position of spatial pattern , 1999, Nature.

[9]  P Fattori,et al.  Functional properties of neurons in area V1 of awake macaque monkeys: peripheral versus central visual field representation. , 1993, Archives italiennes de biologie.

[10]  E. DeYoe,et al.  A physiological correlate of the 'spotlight' of visual attention , 1999, Nature Neuroscience.

[11]  A. Dale,et al.  The Retinotopy of Visual Spatial Attention , 1998, Neuron.

[12]  J. Rovamo,et al.  Visual resolution, contrast sensitivity, and the cortical magnification factor , 2004, Experimental Brain Research.

[13]  David Whitaker,et al.  Non-veridical size perception of expanding and contracting objects , 1999, Vision Research.

[14]  Frans A. J. Verstraten,et al.  Limits of attentive tracking reveal temporal properties of attention , 2000, Vision Research.

[15]  V S Ramachandran,et al.  Sharpness Constancy during Movement Perception (Short Note) , 1974, Perception.

[16]  A. Dale,et al.  Functional analysis of primary visual cortex (V1) in humans. , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[17]  E. Switkes,et al.  Deoxyglucose analysis of retinotopic organization in primate striate cortex. , 1982, Science.

[18]  V. Ramachandran,et al.  Illusory Displacement of Equiluminous Kinetic Edges , 1990, Perception.

[19]  D. Whitteridge,et al.  The representation of the visual field on the cerebral cortex in monkeys , 1961, The Journal of physiology.

[20]  Michael J. Berry,et al.  Anticipation of moving stimuli by the retina , 1999, Nature.

[21]  Richard H Masland,et al.  Functional inhibition in direction-selective retinal ganglion cells: spatiotemporal extent and intralaminar interactions. , 2002, Journal of neurophysiology.

[22]  J W Belliveau,et al.  Borders of multiple visual areas in humans revealed by functional magnetic resonance imaging. , 1995, Science.

[23]  S. Sherman,et al.  Receptive-field characteristics of neurons in cat striate cortex: Changes with visual field eccentricity. , 1976, Journal of neurophysiology.

[24]  Anders M. Dale,et al.  Representation of motion boundaries in retinotopic human visual cortical areas , 1997, Nature.

[25]  G Aschersleben,et al.  Localizing the first position of a moving stimulus: The Fröhlich effect and an attention-shifting explanation , 1998, Perception & psychophysics.

[26]  P Cavanagh,et al.  Attention-based motion perception. , 1992, Science.

[27]  Henk Spekreijse,et al.  Contour from motion processing occurs in primary visual cortex , 1993, Nature.