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Peer reviewed
Direct linkMasaki, Takahisa; Nakajima, Sadahiko – Learning and Motivation, 2010
Swimming endows rats with an aversion to a taste solution consumed before swimming. The present study explored whether the experience of swimming before or after the taste-swimming trials interferes with swimming-based taste aversion learning. Experiment 1 demonstrated that a single preexposure to 20 min of swimming was as effective as four or…
Descriptors: Aquatic Sports, Animals, Conditioning, Retention (Psychology)
Nagaishi, Takatoshi; Nakajima, Sadahiko – Learning and Motivation, 2008
Repeated exposures to a target taste (X) attenuated subsequent development of rats' conditioned aversion to X (latent inhibition effect). Presentation of another taste (A) after X in conditioning (serial X-A compound conditioning) also attenuated conditioned X aversion compared with conditioning without A (overshadowing). Furthermore, the latent…
Descriptors: Inhibition, Classical Conditioning, Validity, Animals
Doe, Nobutaka; Nakajima, Sadahiko; Tamai, Noriko – Learning and Motivation, 2004
In conditioned suppression of water licking behavior by rats, we obtained data indicating general transfer of fear conditioning. A series of experiments resulted in two major findings. First, pairing of a neutral stimulus with a shock in the initial conditioning task facilitated acquisition of subsequent fear conditioning to another neutral…
Descriptors: Conditioning, Animals, Fear, Animal Behavior
Masaki, Takahisa; Nakajima, Sadahiko – Learning and Motivation, 2004
In two experiments, the evidence showed that 20 min of forced swimming by rats caused aversion to a taste solution consumed before swimming. When one of two taste solutions (sodium saccharin or sodium chloride, counterbalanced across rats) was paired with swimming and the other was not, the rats' intakes of these two solutions showed less…
Descriptors: Animals, Animal Behavior, Conditioning, Stimuli
