behavior/neurological
• exhibit improved performance during long-term retention and reversal learning
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• exhibit improved performance on a water maze, finding the platform faster than controls
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• in the elevated plus-maze test, spend less time on the open and more time on the walled arms of the apparatus, indicating an increase in anxiety-related behavior
• in the open field test, spend more time in the corners than the center, indicating an increase in anxiety-related avoidance of open space
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• in the open field test, are less active than wild-type but show unimpaired habituation
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homeostasis/metabolism
• dopamine is increased in the cerebellum of water maze-trained mutants and the turnover rates for dopamine are decreased in the cerebellum but are increased in the ventral striatum compared to wild-type
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• 5-HIAA is increased in the cerebellum of water maze-trained mutants compared to wild-type and the turnover rates for serotonin are increased in the frontal cortex and ventral straitum
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