Journal
PLOS ONE
Volume 12, Issue 11, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0186798
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Funding
- Grants-in-Aid for Scientific Research [16K21734, 16H06524, 16H06530, 17K19372] Funding Source: KAKEN
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The understanding of individual diversity and its link to brain functions is a fundamental issue in neurobiology. Studies in mice have mainly focused on the investigation of behavior traits in adulthood, whereas longitudinal analyses are largely uninvestigated. Here we have conducted systematic behavior tests in individual mice (C57BL6/J, male), comparing phenotypes at early postnatal stages and in adulthood. Each animal showed different scores in individual behavior tests. However, we observed an inverse correlation between repetitive behavior in the Morris water maze test and sociability in the 3-chamber social interaction test; an increase in repetitive behaviors was associated with poor sociability. In longitudinal analyses, the emission of ultrasonic vocalization during maternal separation at postnatal day 6 in pups was correlated positively with sociability and negatively with spatial memory. Our results show a possibility that individual differences in communication between pups and their mother in infancy is a predictive indicator for sociability and cognitive performance as an adult.
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