What rhymes with spontaneous recovery?
spon·ta·neous recov·e·ry

Spontaneous recovery is a phenomenon of learning and memory which was first seen in classical conditioning and refers to the re-emergence of a previously extinguished conditioned response after a delay. Spontaneous recovery is associated with the learning process called classical conditioning, in which an organism learns to associate two stimuli, such that one stimulus comes to produce a response that originally was produced by the other stimulus. Although principles of classical conditioning had been noted by many Western scholars throughout the late nineteenth and early twentieth centuries, the discovery of classical conditioning is usually attributed to Ivan Pavlov, a nineteenth-century physiologist who came across classical conditioning while conducting research on canine digestion. To study digestion, Pavlov presented various types of food to dogs and measured their natural salivary response. Through this process, Pavlov noticed that with repeated testing, the dogs began to salivate before the food was presented, such as when they heard the footsteps of the approaching experimenter. Pavlov’s research team rigorously studied this process for decades, and this type of learning association came to be called classical or Pavlovian conditioning.

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