Discrimination of Homogeneous Double Pulses of light

  • Robert M. Boynton
Part of the Handbook of Sensory Physiology book series (SENSORY, volume 7 / 4)


When two pulses1 of light are delivered successively to the same part of the retina, they may or may not be seen. If seen, they may appear as two flashes separated by a definite dark interval, or they may be perceived instead as a single flash that seems to vary from bright to dim and back again to bright. Sometimes a single flash will be seen as having a subtle flickering appearance that barely suggests the temporal inhomogeneity of the double-pulse that produced it. At still other times the double-pulse may be indistinguishable from a single pulse, either because it appears as a distinctly unitary event, or because, under the given set of experimental conditions, a single pulse may itself sometimes be seen as a double flash.


Conditioning Stimulus Stimulus Onset Asynchrony Temporal Summation Double Pulse Critical Duration 
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Copyright information

© Springer-Verlag, Berlin · Heidelberg 1972

Authors and Affiliations

  • Robert M. Boynton
    • 1
  1. 1.RochesterUSA

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