Summary
The spatial properties of human binocular mechanisms were investigated using the technique of subthreshold summation. Isolation of binocular mechanisms was achieved by means of interocular stimulus presentation. The contrast detection threshold for a sinusoidal test grating viewed by one eye was found to be reduced by a subthreshold grating of the same spatial frequency and orientation seen by the other eye. The interaction between the gratings was approximately linear. Threshold increased as the spatial frequencies or orientations of test and subthreshold gratings were made increasingly different. Spatial stimulus specificities measured in this way were as great for interocular presentation as for simultaneous monocular presentation. The results suggest that human contrast sensitivity for gratings may depend upon binocularly-activated neurones similar to those found in cat and monkey visual cortex.
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References
Barlow, H.B., Brindley, G.S.: Inter-ocular transfer of movement after-effects during pressure blinding of the stimulated eye. Nature (Lond.) 200, 1346–1347 (1963)
Barlow, H.B., Blakemore, C., Pettigrew, J.D.: The neural mechanism of binocular depth discrimination. J. Physiol. (Lond.) 193, 327–342 (1967)
Blake, R., Fox, R.: Interocular transfer of adaptation to spatial frequency during retinal ischaemia. Nature New Biol. 240, 76–77 (1972)
Blake, R., Fox, R.: The psychophysical inquiry into binocular summation. Percept. Psychophys. 14, 161–185 (1973)
Blakemore, C., Campbell, F.W.: On the existence of neurones in the human visual system selectively sensitive to the orientation and size of retinal images. J. Physiol. (Lond.) 203, 237–260 (1969)
Blakemore, C., Hague, B.: Evidence for disparity detecting neurones in the human visual system. J. Physiol. (Lond.) 225, 437–455 (1972)
Blakemore, C., Sutton, P.: Size adaptation: a new aftereffect. Science 166, 245–247 (1969)
Burns, D.B., Pritchard, R.: Cortical conditions for fused binocular vision. J. Physiol. (Lond.) 197, 149–171 (1968)
Campbell, F.W., Green, D.G.: Monocular versus binocular visual acuity. Nature (Lond.) 208, 191–192 (1965a)
Campbell, F.W., Green, D.G.: Optical and retinal factors affecting visual resolution. J. Physiol. (Lond.) 181, 576–593 (1965b)
Campbell, F.W., Kulikowski, J.J.: Orientational selectivity of the human visual system. J. Physiol. (Lond.) 187, 437–445 (1966)
Crawford, M.L.J., Cool, S.J.: Binocular stimulation and response variability of striate cortex units in the cat. Vision Res. 10, 1145–1153 (1970)
Felton, T.B., Richards, W., Smith, R.A., Jr.: Disparity processing of spatial frequencies in man. J. Physiol. (Lond.) 225, 349–362 (1972)
Fiorentini, A.: Excitatory and inhibitory interactions in the human eye. In: Visual Science (eds. J. Pierce and J. Levine). Indiana: Indiana University Press 1968
Gibson, J.J.: Adaptation, aftereffect and contrast in the perception of curved lines. J. exp. Psychol. 16, 1–13 (1937)
Green, D.M., Swets, J.A.: Signal Detection Theory and Psychophysics. New York: Wiley 1966
Hubel, D.H., Wiesel, T.N.: Receptive fields, binocular interaction and functional architecture in the cat's visual cortex. J. Physiol. (Lond.) 160, 106–154 (1962)
Hubel, D.H., Wiesel, T.N.: Receptive fields and functional architecture of monkey striate cortex. J. Physiol. (Lond.) 195, 215–243 (1968)
Hubel, D.H., Wiesel, T.N.: Cells sensitive to binocular depth in area 18 of the macaque monkey cortex. Nature (Lond.) 225, 41–42 (1970)
Kelly, D.H.: Spatial frequency selectivity in the retina. Vision Res. 15, 665–672 (1975)
Kulikowski, J.J., Abadi, R., King-Smith, P.E.: Orientational selectivity of grating and line detectors in human vision. Vision Res. 13, 1479–1486 (1973)
Kulikowski, J.J., King-Smith, P.E.: Spatial arrangement of line, edge and grating detectors revealed by subthreshold summation. Vision Res. 13, 1455–1478 (1973)
Mitchell, D.E., Baker A.G.: Stereoscopic aftereffects: evidence for disparity-specific neurons in the human visual system. Vision Res. 13, 2273–2288 (1973)
Mitchell, D.E., Reardon, J., Muir, D.W.: Interocular transfer of the motion after-effect in normal and stereoblind observers. Exp. Brain Res. 22, 163–173 (1975)
Mitchell, D.E., Ware, C.: Interocular transfer of a visual after-effect in normal and stereoblind humans. J. Physiol. (Lond.) 236, 707–721 (1974)
Movshon, J.A., Chambers, B.E.I., Blakemore, C.: Interocular transfer in normal humans and those who lack stereopsis. Perception 1, 483–490 (1972)
Nikara, T., Bishop, P.O., Pettigrew, J.D.: Analysis of retinal correspondence by studying receptive fields of binocular single units in cat striate cortex. Exp. Brain Res. 6, 353–372 (1968)
Pantle, A., Sekuler, R.: Size-detecting mechanisms in human vision. Science 162, 1146–1148 (1968)
Pettigrew, J.D., Nikara, T., Bishop, P.O.: Binocular interaction on single units in cat striate cortex: simultaneous stimulation by single moving slit with receptive fields in correspondence. Exp. Brain Res. 6, 391–410 (1968)
Sachs, M.B., Nachmias, J., Robson, J.G.: Spatial-frequency channels in human vision. J. opt. Soc. Amer. 61, 1176–1186 (1971)
Stromeyer, C.F. III, Klein, S.: Evidence against narrow-band spatial frequency channels in human vision: The detectability of frequency modulated gratings. Vision Res. 15, 899–910 (1975)
Wohlgemuth, A.: On the after-effect of seen movement. Brit. J. Psychol. Monogr. Suppl. 1, 1–117 (1911)
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Blake, R., Levinson, E. Spatial properties of binocular neurones in the human visual system. Exp Brain Res 27, 221–232 (1977). https://doi.org/10.1007/BF00237700
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DOI: https://doi.org/10.1007/BF00237700