Mirror image equivalence has been studied in four monkeys during inter-manual transfer of tactile discrimination learning. The tasks were designed to progressively reduce the possibility that discrimination would be based on use of the thumb. On three of the four tasks there were consistently significant mirror reversals. The findings support the supposition that mirror inversion occurs during the formation of memory traces, and specifically when the trace is laid down in a second cerebral hemisphere.
Get full access to this article
View all access options for this article.
References
1.
BealeI. L.CorballisM. C. (1968). Beak shift: an explanation for interocular mirror-image reversal in pigeons.Nature220, 82–83.
2.
BealeI. L.WilliamsR. J.WebsterD. M.CorballisM. C. (1972). Confusion of mirror-images by pigeons and inter-hemispheric commissures.Nature238, 348–349.
3.
BornsteinM. H.GrossC. G.WolfJ. Z. (1978). Perceptual similarity of mirror images in infancy.Cognition6, 89–116.
4.
CorballisM. C.BealeI. L. (1976). The psychology of left and rightHillsdale, N. J.: Lawrence Erlbaum Associates.
5.
EttlingerG.ElithornA. (1962). Transfer between the hands of a mirror-image tactile shape discrimination.Nature194, 1101–1102.
6.
HamiltonC. R.TiemanS. B. (1973). Interocular transfer of mirror image discriminations by chiasm-sectioned monkeys.Brain Research64, 241–255.
7.
NobleJ. (1966). Mirror-images and the forebrain commissures of the monkey.Nature211, 1263–1265.
8.
NobleJ. (1968). Paradoxical interocular transfer of mirror-image discrimination in the optic chiasm sectioned monkey.Brain Research10, 127–151.
9.
RockI. (1973). Orientation and formNew York: Academic Press.
