Movement detection by cats: invariance with direction and target configuration.

Absolute thresholds for movement detection were measured in three cats and two human subjects under similar conditions. A two-alternative spatial forced-choice procedure was used with the method of constant stimuli. When targets were moving random-dot patterns, cat thresholds ranged from .6 degrees to 2.3 degrees/sec, while human thresholds were approximately .05 degrees/sec. Similar thresholds were found for cats tested with square wave gratings ranging in spatial frequency from .18 to 1 cycle/degree. Neither cats nor humans showed any directional asymmetry for motion detection.

[1]  W. Levick,et al.  Sustained and transient neurones in the cat's retina and lateral geniculate nucleus , 1971, The Journal of physiology.

[2]  Karl U. Smith,et al.  Visual Thresholds of Real Movement in the Cat , 1935 .

[3]  H. Leibowitz.  Effect of reference lines on the discrimination of movement. , 1955, Journal of the Optical Society of America.

[4]  P Sterling,et al.  Visual receptive fields in the superior colliculus of the cat. , 1969, Journal of neurophysiology.

[5]  D A GORDON,et al.  The relation between the thresholds of form, motion, and displacement in parafoveal and peripheral vision at a scotopic level of illumination. , 1947, The American journal of psychology.

[6]  J. Movshon.  The velocity tuning of single units in cat striate cortex. , 1975, The Journal of physiology.

[7]  M. Berkley,et al.  Visual acuity and the near point of accommodation in cats , 1977, Vision Research.

[8]  C. Enroth-Cugell,et al.  The contrast sensitivity of retinal ganglion cells of the cat , 1966, The Journal of physiology.

[9]  H B BARLOW,et al.  Visual Resolution and the Diffraction Limit , 1965, Science.

[10]  A. Fuchs,et al.  Saccadic, smooth pursuit, and optokinetic eye movements of the trained cat. , 1978, The Journal of physiology.

[11]  J. Movshon,et al.  Spatial and temporal contrast sensitivity of neurones in areas 17 and 18 of the cat's visual cortex. , 1978, The Journal of physiology.

[12]  J. Stone,et al.  Very slow-conducting ganglion cells in the cat's retina: a major, new functional type? , 1972, Brain research.

[13]  D. Willshaw,et al.  Responses of the various types of cat retinal ganglion cells to moving contours , 1978, Vision Research.

[14]  A Pantle.  Adaptation to pattern spatial frequency: effects on visual movement sensitivity in humans. , 1970, Journal of the Optical Society of America.

[15]  L Maffei,et al.  Behavioural contrast sensitivity of the cat in various visual meridians , 1974, The Journal of physiology.

[16]  F. Campbell,et al.  The effect of orientation on the visual resolution of gratings , 1966, The Journal of physiology.

[17]  R. Sekuler,et al.  Masking of motion by broadband and filtered directional noise , 1979 .

[18]  Chris A. Johnson,et al.  Velocity-time reciprocity in the perception of motion: Foveal and peripheral determinations , 1976, Vision Research.

[19]  R. Blake.  Spatial Vision in the Cat , 1978 .

[20]  L. Maffei,et al.  The visual cortex as a spatial frequency analyser. , 1973, Vision research.

[21]  R. L. de Valois,et al.  Psychophysical studies of monkey vision. 3. Spatial luminance contrast sensitivity tests of macaque and human observers. , 1974, Vision research.

[22]  J. F. Brown.  The thresholds for visual movement , 1931 .

[23]  K. Hoffmann,et al.  Retinal input to direction selective cells in the nucleus tractus opticus of the cat , 1975, Brain Research.

[24]  A W Goodwin,et al.  The influence of stimulus velocity on the responses of single neurones in the striate cortex. , 1978, The Journal of physiology.

[25]  P. O. Bishop,et al.  Orientation, axis and direction as stimulus parameters for striate cells. , 1974, Vision research.

[26]  Robert Sekuler,et al.  Human Vision Favors Centrifugal Motion , 1980, Perception.

[27]  B. Dreher,et al.  Receptive field analysis: responses to moving visual contours by single lateral geniculate neurones in the cat , 1973, The Journal of physiology.

[28]  Leibowitz Hw,et al.  The relation between the rate threshold for the perception of movement and luminance for various durations of exposure. , 1955 .

[29]  K. D. Valois.  Spatial frequency adaptation can enhance contrast sensitivity , 1977, Vision Research.

[30]  M. Crook.  Visual Discrimination of Movement , 1937 .

[31]  Robert Sekuler,et al.  A two-dimensional analysis of direction-specific adaptation , 1980, Vision Research.

[32]  J. L. Kennedy.  The Effects of Complete and Partial Occipital Lobectomy upon Thresholds of Visual Real Movement Discrimination in the Cat , 1939 .

[33]  B G Breitmeyer,et al.  A relationship between the detection of size, rate, orientation and direction in the human visual system. , 1973, Vision research.

[34]  Forrest L. Dimmick,et al.  The effect of the exposure time upon the R. L. of visible motion , 1930 .

[35]  D. Hubel,et al.  Receptive fields, binocular interaction and functional architecture in the cat's visual cortex , 1962, The Journal of physiology.

[36]  F. Campbell,et al.  The contrast sensitivity of the cat , 1973, The Journal of physiology.

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

[38]  J. Palka,et al.  Diffraction and Visual Acuity of Insects , 1965, Science.

[39]  Santo Salvatore.  32 – Spatial Summation in Motion Perception , 1978 .

[40]  Berkley Ma,et al.  Movement discrimination capacities in the cat. , 1978 .