• some mice die between birth and weaning

• some mice die between birth and weaning

• mice exhibit higher distance traveled, time spent walking, and time spent lingering compared with control mice

• after habituation, mice exhibit a second burst of activity (walking and rearing) unlike control mice

• mice spend less time resting than control mice

• mice are more active in the dark and light phases compared with control mice

• mice exhibit a higher ratio of light to dark activity compared with control mice

• mice exhibit extremely stereotypic ceiling-climbing unlike control mice with some mice becoming trapped on the ceiling for extensive periods

• in the posterior, lateral regions compared with Dp(7Slx1b-Sept1)5Aam mice

• in the lateral hypothalamus

• prior to weaning but not as adults