behavior/neurological
• homozygous mice spend less time in the center and more time in the corners in an open field and cross the center of an open field with higher velocity than wild-type mice
• homozygous mice visit a familiar object displaced to the center of an open field less frequently than wild-type mice
• no difference was detected in a graded anxiety test between homozygous and wild-type mice
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• during open field and object exploration tests homozygous mice spent less time rearing
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nervous system
N |
• no gross abnormalities were detected in sections from various brain regions
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• choline levels in the ventral striatum are increased
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