Stimulus polarity and conditioning in planaria.
Orientation in the monopolar pulse field used as the unconditioned stimulus was found to influence formation of a conditioned response to light in planarians. Planarians trained while oriented with the head toward the cathode reached maximal response rates rapidly, while those trained while oriented toward the anode showed no evidence of conditioned response formation.
D000818:Animals; D003214:Conditioning, Classical; D003213:Conditioning, Psychological; D006376:Helminths; D008027:Light; D009949:Orientation; D010932:Planarians
CONDITIONED LEARNING; HELMINTHS