Experimental Brain Research

, Volume 10, Issue 4, pp 380–388 | Cite as

Stereopsis and stereoblindness

  • Whitman Richards


Psychophysical tests reveal three classes of wide-field disparity detectors in man, responding respectively to crossed (near), uncrossed (far), and zero disparities. The probability of lacking one of these classes of detectors is about 30% which means that 2.7% of the population possess no wide-field stereopsis in one hemisphere. This small percentage corresponds to the probability of squint among adults, suggesting that fusional mechanisms might be disrupted when stereopsis is absent in one hemisphere.

Key Words

Stereopsis Squint Depth perception Visual perception 


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  1. Barlow, H.B., Blakemore, C., Pettigrew, J.D.: The neural mechanism of binocular depth discrimination. J. Physiol. (Lond.)193, 327–342 (1967).Google Scholar
  2. Chevasse, F.B.: Worth's Squint or the Binocular Reflexes, 7th ed., Blakiston, Philadelphia, 1939.Google Scholar
  3. Hubel, P.H., Wiesel, T.N.: Binocular interaction in striate cortex of kittens reared with artificial squint. J. Neurophysiol.28, 1041–1059 (1965).PubMedGoogle Scholar
  4. Julesz, B.: Binocular Depth Perception without Familiarity cues. Science145, 356–362 (1964).PubMedGoogle Scholar
  5. Ogle, K.N.: The Optical Space Sense, part II. In: The Eye, vol. IV, pp. 211–418. Ed. by H. Davson. New York: Academic Press 1962.Google Scholar
  6. Pettigrew, J.D., Nikara, T., Bishop, P.O.: Binocular interaction on single units in cat striate cortex. Exp. Brain Res.6, 391–410 (1968a).Google Scholar
  7. —: Neural mechanisms concerned in the development of amblyopia ex anopsia. Proc. Aus. Ass. Neurol.5, 221–224 (1968b).Google Scholar
  8. Richards, W.: “The Influence of Oculomotor Systems on Visual Perception”, Report No., AFOSR 69-1934TR, pp. 121, July 1969.Google Scholar
  9. Richter, S.: Untersuchungen über die Heredität des Strabismus concomitans. Leipzig: Georg Thieme 1967.Google Scholar
  10. Swets, J.A.: Signal Detection and Recognition by Human Observers. New York: Wiley 1964.Google Scholar
  11. Westheimer, G., Mitchell, D.E.: The sensory stimulus for disjunctive eye movements. Vision Res.9, 749–755 (1969).CrossRefPubMedGoogle Scholar
  12. Wheatstone, C.: Contributions to the Physiology of Vision I. Phil. Trans. B, pp. 371–394 (1838).Google Scholar

Copyright information

© Springer-Verlag 1970

Authors and Affiliations

  • Whitman Richards
    • 1
  1. 1.Department of PsychologyMassachusetts Institute of TechnologyCambridgeUSA

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