Successive and maintained conditioning in spinal carnivores.

Abstract
Phenomena which meet the criteria of conditioning were observed in twelve spinal kittens and in a spinal puppy. Positive results were obtained both when conditioning and extinction sessions were alternated on the same day (successive conditioning) and when conditioning or extinction sessions were continued for several consecutive days (maintained conditioning). Various controls (e.g., use of a mechanical rather than an electrical CS) were introduced to obviate the hypothesis of pseudoconditioning. Both acute and chronic preparations gave positive results. Latency of the CR was found to be longer and more variable than latency of the UCR.
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