Exp Neurobiol 2013; 22(2): 124-127
Published online June 30, 2013
© The Korean Society for Brain and Neural Sciences
Eun-Hae Jang1, Seo-Hee Ahn1, Ye-Seul Lee1, Hye-Ryeon Lee2 and Bong-Kiun Kaang1,2*
Departments of 1Brain and Cognitive Sciences, 2Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
Correspondence to: *To whom correspondence should be addressed.
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Food deprivation can affect performance on difficult cognitive task, such as the delayed nonmatch-to-place T-maze task (DNMT). The importance of food deprivation on maintaining high motivation for DNMT task has been emphasized, but not many studies have investigated the optimal conditions for depriving rodents to maximize performance. Establishing appropriate conditions for food deprivation is necessary to maintain DNMT task motivation. We applied different conditions of food deprivation (1-h food restriction vs. 1.5-g food restriction; single caging vs. group caging) and measured body weight and the number of correct choices that 8-week-old C57BL/6J mice made during the DNMT task. The 1.5-g food restriction group maintained 76.0±0.6% of their initial body weight, but the final body weight of the 1-h food restriction condition group was reduced to 62.2±0.8% of their initial body weight. These results propose that 1.5-g food restriction condition is effective condition for maintaining both body weight and motivation to complete the DNMT task.
Keywords: food deprivation, motivation, cognitive ability, delayed nonmatch-to-place T-maze task