Data for: Roles of the cerebellar vermis in predictive postural controls against external disturbances

The central nervous system predictively controls posture against external
disturbances; however, the detailed mechanisms remain unclear. We tested
the hypothesis that the cerebellar vermis plays a substantial role in
acquiring predictive postural control by using a standing task with floor
disturbances in rats. The intact, lesioned, and sham groups of rats
sequentially underwent 70 conditioned floor-tilting trials, and kinematics
were recorded. Six days before these recordings, only the lesion group
underwent focal suction surgery targeting vermal lobules Ⅳ-Ⅷ. In the naïve
stage of the sequential trials, the upright postures and fluctuations due
to the disturbance were mostly consistent among the groups. Although the
pattern of decrease in postural fluctuation due to learning corresponded
among the groups, the learning rate estimated from the lumbar displacement
was significantly lower in the lesion group than in the intact and sham
groups (approximately 35% of the sham group). These results suggest that
the cerebellar vermis contributes to predictive postural control.