Fig. 4

Location and directional tuning of ventrally located neurons receiving utricular input. (A) Coronal projection of reconstructions of 83 ventral neurons that receive direct utricular afferent input, colorized by their inferred directional tuning [see color code, (D)]. In addition, the left and right Mauthner cells are shown in gray to facilitate comparisons with other results. Neurons responsive to contralateral tilt (reds) are preferentially located on the lateral edge of the vestibular brainstem (see Figure 7). (B) Sagittal view of the same neuron reconstructions as in (A). Ventrally located neurons are distributed both rostrally and caudally to the Mauthner cell body. (C) Horizontal view of the same neurons as in (A). Scale bar applies to (A–C). (D) Summary of the inferred directional tuning of ventral neurons with utricular input. Vector direction indicates the computed directional tuning of each neuron. Arrow lengths have been adjusted to facilitate visualization.