Abstract
Planarians have been trained in a Pavlovian way with one conditioning stimulus followed by another. Extinction trials followed, and the results indicate that the animals can differentiate between the two conditioning stimuli and respond appropriately.
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BLOCK, R., MCCONNELL, J. Classically Conditioned Discrimination in the Planarian, Dugesia dorotocephala. Nature 215, 1465–1466 (1967). https://doi.org/10.1038/2151465a0
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DOI: https://doi.org/10.1038/2151465a0
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