Intraretinal Transfer and the Function of the Optic Lobes in Octopus

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Abstract
A method of training octopuses was developed which allowed the part of the retina stimulated to be controlled during training and subsequent transfer tests. Using this method the following results were obtained, (1) There was more stimulus generalization when the edge of the retina was stimulated than there was when the centre of the retina was stimulated, suggesting that discrimination is better with the centre of the retina. (2) Intraretinal transfer is more nearly complete than interocular transfer. (3) Continuity of the optic lobes between the projection areas of different parts of the retina is necessary if receptor transfer is to occur between them. The optic lobes are therefore involved in visual learning in the situation used.

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