Skip to main content
. 2012 Oct 31;109(3):873–888. doi: 10.1152/jn.00239.2012

Fig. 3.

Fig. 3.

Representative tuning curves from a single head direction (HD) cell recorded in experiment 1. A: Cylinder, Horizontal-Platform, and Horizontal-Rotation sessions. B: Horizontal-Platform and Vertical 1 sessions. C: Vertical 1–4 sessions using the vertical platform as a reference frame. D: Vertical 1–4 sessions using the room as a reference frame. For this example, the cell's preferred direction was similar for the Cylinder and Horizontal-Platform sessions and did not shift after rotation of the horizontal platform (A). The cell's preferred direction was relatively similar for all Vertical sessions when using the vertical platform as the reference frame (C). The axis labels for all plots are shown in A. For purposes of clarity when comparing different sessions, note that the y-axis is drawn at a different scale in A and B compared with C and D. E and F: summary of HD cell responses for the Vertical sessions as a function of the reference frame used by the cell: platform coordinates (local cues) (E) correspond to C, room coordinates (global cues) (F) correspond to D. Note the different angular labels for the x- and y-axes when comparing the 2 coordinate systems.