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Articles 61 - 62 of 62
Full-Text Articles in Social and Behavioral Sciences
The Energetic Costs Of Rough And Tumble Play In The Juvenile Rat, Stephen M. Siviy, Dale M. Atrens
The Energetic Costs Of Rough And Tumble Play In The Juvenile Rat, Stephen M. Siviy, Dale M. Atrens
Psychology Faculty Publications
The metabolic costs of rough-and-tumble play behavior were studied in juvenile rats. Using indirect calorimetry, it was determined that energy expenditure during play is increased by 66-104% over the resting metabolic rate, indicating that play accounts for between 2% and 3% of the total daily energy budget of the rat. In a subsequent experiment, food intake and body weight were monitored for three weeks in rats allowed to play for one hour per day and in rats not allowed to play. While the body weights of the two groups did not differ significantly from each other, those rats allowed to …
Sensory Modulation Of Juvenile Play In Rats, Stephen M. Siviy, Jaak Panksepp
Sensory Modulation Of Juvenile Play In Rats, Stephen M. Siviy, Jaak Panksepp
Psychology Faculty Publications
A series of experiments was conducted to determine the extent to which somatosensory stimulation is necessary for the elaboration of juvenile play in rats. Anesthetization of the dorsal body surface of juvenile rats with xylocaine reduced the frequency of pinning, an indicator variable for play, by 35% to 70%, while motivation to play, measured by dorsal contacts, an index of play solicitation, remained largely intact. These data suggest that dorsal body surface anesthetization impairs the ability of juvenile rats to perceive and/or respond to playful gestures. When untreated animals were paired with xylocaine-treated animals, the xylocaine-treated animals consistently pinned the …