• Publications
  • Influence
Involuntary motions of the eye during monocular fixation.
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INHIBITORY INTERACTION OF RECEPTOR UNITS IN THE EYE OF LIMULUS
The inhibition that is exerted mutually among the receptor units (ommatidia) in the lateral eye of Limulus has been analyzed by recording oscillographically the discharge of nerve impulses in singleExpand
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The disappearance of steadily fixated visual test objects.
A system has been devised for causing an image to remain at one point on the retina regardless of eye movements. A beam of light, reflected from a plane mirror on a contact lens, is used to projectExpand
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SPATIAL SUMMATION OF INHIBITORY INFLUENCES IN THE EYE OF LIMULUS, AND THE MUTUAL INTERACTION OF RECEPTOR UNITS
The inhibitory influences exerted mutually among the receptor units (ommatidia) of the lateral eye of Limulus are additive. If two groups of receptors are illuminated together the total inhibitionExpand
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Visual evoked potentials: evidence for lateral interactions.
  • V. Zemon, F. Ratliff
  • Medicine
  • Proceedings of the National Academy of Sciences…
  • 1 September 1982
Electrical potentials evoked in the human brain by visual stimulation can easily be recorded by using electrodes attached to the scalp. It is difficult, however, to relate these visual evokedExpand
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The spatiotemporal transfer function of the Limulus lateral eye
The dynamics of the Limulus retina may be well described by the spatiotemporal transfer function, which measures the response of the eye to moving sinusoidal gratings. We consider a model for thisExpand
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Intermodulation components of the visual evoked potential: Responses to lateral and superimposed stimuli
Nonlinear interactions in the human visual system were studied using visual evoked potentials (VEPs). In one experiment (superimposed condition), all segments of a dartboard pattern were contrastExpand
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INHIBITION IN THE EYE OF LIMULUS
In the compound lateral eye of Limulus each ommatidium functions as a single receptor unit in the discharge of impulses in the optic nerve. Impulses originate in the eccentric cell of each ommatidiumExpand
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Why mach bands are not seen at the edges of a step
  • F. Ratliff
  • Physics, Medicine
  • Vision Research
  • 31 December 1984
UNLABELLED Mach bands are seen at the two ends of a ramp in luminance from one uniform level to another. Narrow, sharp-edged stimuli centered on the ramp attenuate both Mach bands simultaneously. Expand
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