Temporal contrast sensitivity during smooth pursuit eye movements.

During smooth pursuit eye movements, stimuli other than the pursuit target move across the retina, and this might affect their detectability. We measured detection thresholds for vertically oriented Gabor stimuli with different temporal frequencies (1, 4, 8, 12, 16, 20, and 24 Hz) of the sinusoids. Observers kept fixation on a small target spot that was either stationary or moved horizontally at a speed of 8 deg/s. The sinusoid of the Gabor stimuli moved either in the same or in the opposite direction as the pursuit target. Observers had to indicate whether the Gabor stimuli were displayed 4 degrees above or below the target spot. Results show that contrast sensitivity was mainly determined by retinal-image motion but was slightly reduced during smooth pursuit eye movements. Moreover, sensitivity for motion opposite to pursuit direction was reduced in comparison to motion in pursuit direction. The loss in sensitivity for peripheral targets during pursuit can be interpreted in terms of space-based attention to the pursuit target. The loss of sensitivity for motion opposite to pursuit direction can be interpreted as feature-based attention to the pursuit direction.

[1]  R Uwer,et al.  Effects of dual task demands on the accuracy of smooth pursuit eye movements. , 1999, Psychophysiology.

[2]  J. Maunsell,et al.  State dependent activity in monkey visual cortex , 2004, Experimental Brain Research.

[3]  Andrew B. Watson,et al.  Window of visibility: a psychophysical theory of fidelity in time-sampled visual motion displays , 1986 .

[4]  H. Collewijn,et al.  Human smooth and saccadic eye movements during voluntary pursuit of different target motions on different backgrounds. , 1984, The Journal of physiology.

[5]  Andrew B. Watson,et al.  Digital images and human vision , 1993 .

[6]  Ken Nakayama,et al.  Visual and cognitive control of attention in smooth pursuit. , 2002, Progress in brain research.

[7]  M. Carrasco,et al.  Covert attention affects the psychometric function of contrast sensitivity , 2002, Vision Research.

[8]  M. Masson,et al.  Using confidence intervals in within-subject designs , 1994, Psychonomic bulletin & review.

[9]  Felix Wichmann,et al.  The psychometric function: II. Bootstrap-based confidence intervals and sampling , 2001, Perception & psychophysics.

[10]  Harold E. Bedell,et al.  Direction and extent of perceived motion smear during pursuit eye movement , 2007, Vision Research.

[11]  P. van Donkelaar,et al.  Spatiotemporal modulation of attention during smooth pursuit eye movements. , 1999, Neuroreport.

[12]  S. B. Hutton,et al.  The effects of dividing attention on smooth pursuit eye tracking , 2005, Experimental Brain Research.

[13]  B. C. Motter,et al.  Neural correlates of feature selective memory and pop-out in extrastriate area V4 , 1994, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[14]  Michael P. Eckert,et al.  The significance of eye movements and image acceleration for coding television image sequences , 1993 .

[15]  K R Gegenfurtner,et al.  Processing of color, form, and motion in macaque area V2 , 1996, Visual Neuroscience.

[16]  C. J. Keemink,et al.  Contrast sensitivity for oscillating sine wave gratings during ocular fixation and pursuit , 1988, Vision Research.

[17]  F A Wichmann,et al.  Ning for Helpful Comments and Suggestions. This Paper Benefited Con- Siderably from Conscientious Peer Review, and We Thank Our Reviewers the Psychometric Function: I. Fitting, Sampling, and Goodness of Fit , 2001 .

[18]  J. Reynolds,et al.  Attentional modulation of visual processing. , 2004, Annual review of neuroscience.

[19]  Jeff B. Pelz,et al.  Spatio-velocity CSF as a function of retinal velocity using unstabilized stimuli , 2006, Electronic Imaging.

[20]  M. Masson.  Using confidence intervals for graphically based data interpretation. , 2003, Canadian journal of experimental psychology = Revue canadienne de psychologie experimentale.

[21]  Ernst von Fleischl,et al.  Physiologisch-optische Notizen , 1882 .

[22]  Brian J. Murphy,et al.  Pattern thresholds for moving and stationary gratings during smooth eye movement , 1978, Vision Research.

[23]  Harold E. Bedell,et al.  Asymmetry of perceived motion smear during head and eye movements: Evidence for a dichotomous neural categorization of retinal image motion , 2005, Vision Research.

[24]  E. Ludvigh,et al.  Study of visual acuity during the ocular pursuit of moving test objects. I. Introduction. , 1958, Journal of the Optical Society of America.

[25]  B Brown,et al.  The effect of target contrast variation on dynamic visual acuity and eye movements. , 1972, Vision research.

[26]  John H. R. Maunsell,et al.  Feature-based attention in visual cortex , 2006, Trends in Neurosciences.

[27]  Eileen Kowler,et al.  Shared attentional control of smooth eye movement and perception , 1986, Vision Research.

[28]  P. H. Schiller,et al.  State dependent activity in monkey visual cortex , 2004, Experimental Brain Research.

[29]  C. Rashbass,et al.  The relationship between saccadic and smooth tracking eye movements , 1961, The Journal of physiology.

[30]  B Brown,et al.  Dynamic visual acuity, eye movements and peripheral acuity for moving targets. , 1972, Vision research.

[31]  D. Methling,et al.  Sehscharfe des auges bei horizontalen folgebewegungen , 1968 .

[32]  Wilson S. Geisler,et al.  Motion streaks provide a spatial code for motion direction , 1999, Nature.

[33]  L. Yumin,et al.  CONTRAST SENSITIVITY MEASURED DURING SMOOTH PURSUIT MOVEMENT , 1984 .

[34]  Wilson S. Geisler,et al.  Variable‐Resolution Displays for Visual Communication and Simulation , 1999 .

[35]  D Methling,et al.  [Visual acuity in horizontal tracking movements of the eye]. , 1968, Vision research.

[36]  Marisa Carrasco,et al.  Attention improves or impairs visual performance by enhancing spatial resolution , 1998, Nature.

[37]  B. Jiang,et al.  Contrast sensitivity measured during smooth pursuit movement. , 1984, Scientia Sinica. Series B, Chemical, biological, agricultural, medical & earth sciences.

[38]  Harold E Bedell,et al.  Suppression of motion-produced smear during smooth pursuit eye movements , 1996, Current Biology.

[39]  Norbert Kathmann,et al.  Deficits in gain of smooth pursuit eye movements in schizophrenia and affective disorder patients and their unaffected relatives. , 2003, The American journal of psychiatry.

[40]  J. Maunsell,et al.  Effects of Attention on the Processing of Motion in Macaque Middle Temporal and Medial Superior Temporal Visual Cortical Areas , 1999, The Journal of Neuroscience.

[41]  R. Angel,et al.  Visual suppression during smooth following and saccadic eye movements. , 1969, Vision research.

[42]  D. Kerzel,et al.  Visual short-term memory during smooth pursuit eye movements. , 2005, Journal of experimental psychology. Human perception and performance.

[43]  Carrie J. McAdams,et al.  Effects of Attention on Orientation-Tuning Functions of Single Neurons in Macaque Cortical Area V4 , 1999, The Journal of Neuroscience.

[44]  P. van Donkelaar,et al.  The allocation of attention during smooth pursuit eye movements. , 2002, Progress in brain research.

[45]  Hermann Aubert,et al.  Die Bewegungsempfindung , 2005, Archiv für die gesamte Physiologie des Menschen und der Tiere.

[46]  R. Krauzlis,et al.  Tracking with the mind’s eye , 1999, Trends in Neurosciences.

[47]  M. Carrasco,et al.  Spatial covert attention increases contrast sensitivity across the CSF: support for signal enhancement , 2000, Vision Research.

[48]  S. Yantis,et al.  Cortical mechanisms of space-based and object-based attentional control , 2003, Current Opinion in Neurobiology.

[49]  S. Treue,et al.  Feature-Based Attention Increases the Selectivity of Population Responses in Primate Visual Cortex , 2004, Current Biology.

[50]  D. H. Kelly.  Motion and vision. II. Stabilized spatio-temporal threshold surface. , 1979, Journal of the Optical Society of America.

[51]  H. Levitt.  Transformed up-down methods in psychoacoustics. , 1971, The Journal of the Acoustical Society of America.

[52]  J. B. Levitt,et al.  Receptive fields and functional architecture of macaque V2. , 1994, Journal of neurophysiology.

[53]  E. J. Morris,et al.  Visual motion processing and sensory-motor integration for smooth pursuit eye movements. , 1987, Annual review of neuroscience.

[54]  A. Sereno,et al.  Spatial selective attention in schizophrenic, affective disorder, and normal subjects , 1996, Schizophrenia Research.

[55]  P. Gelder,et al.  Anticipatory saccades in smooth pursuit: Task effects and pursuit vector after saccades , 1995, Vision Research.