Abstract
Binocular neurons with receptive fields about 5° across were recorded just beneath the pia. Most of them responded to dark stimuli in the lower half of their receptive field and to light stimuli above. There was almost no vertical disparity between the left and right fields and the modal value of the horizontal disparity of the population of cells was 1.7°. Because frogs do not verge their eyes it is possible to calculate at what distance the receptive fields through the two eyes are superimposed. This calculation suggests that the neurons are tuned to detect features in the external world about 50 cm away. This is too far for the neurons to be involved in the frog’s everyday distance vision. It is more likely that they are concerned with assessing the vertical position of a horizontal surface.
Reference22 articles.
1. The neural mechanism of binocular depth discrimination
2. Binocular visual mechanisms in cortical areas I and II of the sheep.
3. Stereopsis in toads
4. Collett T. S. & Harkness L. I. K . 1982 D epth vision in anim als. In Analysis of visual behavior (ed. D . J. Ingle M. A. Goodale & R. J. W. M ansfield) pp. 111-176. Cambridge M assachusetts and London: M .I.T. Press.
5. G rossenkonstanzphanom ene in B eutefangverhalten der Erdkrote (Bufo bufo L.). J. comp;Ewert J .;Physiol.,1973
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