Abstract
The effects of post-conditioning US habituation on the maintenance, extinction, and reconditioning of head withdrawal (CR, UR) in red-eared turtles were examined. The US was a hammer tap to the anterior portion of a turtle’s carapace. The CS was a 2-sec. green light. Following the acquisition of the CR, turtles were used in a chamber adaptation treatment or an habituation treatment. All turtles then received extinction and reconditioning. The extinction data show that the CR, well established to the CS, extinguished spontaneously subsequent to the habituation treatment. Extinction following the chamber adaptation treatment was characteristic of extinction occurring in a classical conditioning situation. The results suggest that the strength of the CR is directly dependent on the strength of the UR.
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Farris, H.E., Breuning, S.E. Post-Conditioning Habituation and Classically Conditioned Head Withdrawal in the Red-Eared Turtle (Chrysemys Scripta Elegans). Psychol Rec 27, 307–313 (1977). https://doi.org/10.1007/BF03394447
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DOI: https://doi.org/10.1007/BF03394447