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| Ishii, Toshiaki; Furuoka, Hidefumi; Ito, Takuya; Kitamura, Nobuo; Nishimura, Masakazu. |
| The mesencephalic trigeminal nucleus (Me5), which receives input from oral proprioceptors and projects to higher brain regions, is involved in mastication-induced modulation of satiation. To investigate how the Me5 is involved in the control of feeding and exploratory behavior, we examined the effect of bilateral electrolytic lesions of the Me5 on feeding and exploratory behavior in mice. Mouse feeding and exploratory behaviors were analyzed using a food- search-compulsion-apparatus (FSCA), which was designed to distinguish between the two behaviors under standard living conditions. To assess anxiety in mice in an unfamiliar environment, exploratory activity was analyzed in an automated hole-board apparatus. Mice with bilateral Me5 lesions had unique... |
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Palavras-chave: Feeding; Exploratory behavior; Me5 lesions. |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/740 |
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| Ishii, Toshiaki; Ito, Takuya; Nishimura, Masakazu; 石井, 利明. |
| An exclusively milk formula diet stunted the growth of mice immediately following weaning. Milk-fed mice displayed a low-frequency profile of exploratory behavior, while pellet-fed mice showed high-frequency exploration. In contrast to exploratory behavior, feeding behavior did not differ significantly between milk- and pellet-fed mice. Despite showing low-frequency exploratory behavior, mice on an exclusively milk formula diet showed no difference in behavioral activities analyzed by an automatic hole-board apparatus compared to pellet-fed mice. These results suggest that the growth stunt caused by an exclusively milk formula diet retards the acquisition of active exploratory behavior without affecting the emotional state of mice. |
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Palavras-chave: Feeding; Exploratory behavior; Growth; Weaning; Milk formula. |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/741 |
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