[Role of the parietal associative cortex in "counting" behavior of dogs].
Influence of the combined and isolated lesions of areas 5 and 7 of the parietal cortex on the counting behavior was studied in experiments with 6 dogs. Instrumental feeding reaction (lifting and placing the forepaw on the foodwell) was established. The positive conditioned stimulus was a series of 5 clicks with variable interclicks intervals and the negative (non-reinforced) conditioned stimulus was a series of 3 clicks, so that asymmetrical differentiation was elaborated. Combined bilateral lesions of areas 5 and 7 and an isolated lesion of area 5 resulted in a severe impairment of the numerical discrimination for two months, whereas the isolated lesion of area 7 did not lead to any problems in differentiation. The conclusion was made that area 5 is critical for numerical discrimination of sequential stimuli.
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D000161:Acoustic Stimulation; D000818:Animals; D003216:Conditioning, Operant / Q000502:physiology*; D004193:Discrimination Learning / Q000502:physiology*; D004285:Dogs; D005247:Feeding Behavior; D010296:Parietal Lobe / Q000502:physiology*; D012054:Reinforcement, Psychology