Fig. 10.

The distribution of PBN units is charted as a function of the dynamic linear response orientation (OVAR modulation response minus static tilt response component during position trapezoid testing). Separate panels represent the caudal PBN (more than 0.5 mm caudal to the center of the responsive region), central 1 mm of PBN, and rostral PBN (more than 0.5 mm rostral to the center of the responsive region). The location of the medial aspect of the PBN (MPBN medial and external medial subnuclei), lateral aspect of the PBN (LPBN external and lateral subnuclei), and the superior cerebellar peduncle (scp) are indicated. The upper row illustrates the distribution of units with estimated dynamic linear acceleration sensitivity oriented along the interaural axis, with response polarity in either the ipsilateral ear down or contralateral ear down orientation. The lower row shows the distribution of units with estimated dynamic linear responses aligned with the ipsilateral anterior semicircular canal-contralateral posterior semicircular canal (IAC-CPC) axis, with response polarity in either the IAC down or the CPC down orientation