• Publications
  • Influence
A local mechanism for differential velocity detection
  • S. McKee
  • Physics, Medicine
  • Vision Research
  • 1981
Abstract Differential velocity detection in the fovea was used to probe the properties of a local motion mechanism. Human observers can detect differences in velocity of less than 5% even for a 200Expand
  • 292
  • 45
The pattern of visual deficits in amblyopia.
Amblyopia is usually defined as a deficit in optotype (Snellen) acuity with no detectable organic cause. We asked whether this visual abnormality is completely characterized by the deficit inExpand
  • 409
  • 32
  • PDF
Spatial configurations for visual hyperacuity
Abstract The threshold for discrimination of relative position of two features in the fovea is lowest—a few sec of arc—when the two features are separated by 2–5′ arc. and is not significantlyExpand
  • 357
  • 25
Two Distinct Mechanisms of Suppression in Human Vision
Cortical visual neurons in the cat and monkey are inhibited by stimuli surrounding their receptive fields (surround suppression) or presented within their receptive fields (cross-orientation orExpand
  • 167
  • 25
  • PDF
Visual acuity in the presence of retinal-image motion.
Resolution thresholds for Landolt C's and for vernier targets remain the same whether the target is stationary or moving with horizontal or vertical velocities of up to 2.5 degrees for fovealExpand
  • 457
  • 21
The detection of motion in the peripheral visual field
To assess the sensitivity of the periphery to motion, we measured differential motion detection and velocity discrimination as a function of eccentricity in the lower visual field. The differentialExpand
  • 318
  • 19
Constraints on long range interactions mediating contour detection
Contour detection may be mediated by lateral interactions between neighboring cortical neurons whose receptive fields have collinear axes of preferred orientation. Expand
  • 127
  • 19
  • PDF
Precise velocity discrimination despite random variations in temporal frequency and contrast
Velocity discrimination is not affected by random changes in contrast or temporal frequency. Observers judged the relative velocity of a moving sinusoidal grating when target contrast was variedExpand
  • 286
  • 15
The spatial requirements for fine stereoacuity
  • S. McKee
  • Mathematics, Medicine
  • Vision Research
  • 1983
The finest human stereoacuity, which in some gifted individuals amounts to the detection of binocular disparities of less than 5 arc sec, is found with isolated vertical target lines 10-15 min of arcExpand
  • 106
  • 15
Sensitivity of smooth eye movement to small differences in target velocity
The precision of smooth pursuit eye movements was described by means of a new dependent measure, the "oculomotor difference threshold" (analogous to the perceptual difference threshold) whichExpand
  • 128
  • 14