Fig. 3.

An example bilateral-limb cell [the same cell shown in Fig. 2A (u140)], which encodes targets relative to the eyes (gaze-centered) on both contralateral- and ipsilateral-limb trials. A: peri-stimulus time histograms and rasters are color coded across 5 test conditions and 5 target locations (see Fig. 1) on contralateral-limb trials. Delay activity is shown with data aligned to the time of target onset (vertical lines). The peak location of the tuning curve fitted to each condition (see C) is indicated by arrows. B: peri-stimulus time histograms and rasters from ipsilateral-limb trials. Same format as in A. C: color-coded mean firing rates (circles), SE (bars), and fitted tuning curves vs. target locations on contralateral-limb trials are shown in screen-centered coordinates. The peak target positions of each condition's fitted tuning curve are indicated by arrows in A. D: color-coded mean firing rates, SE, and fitted tuning curves vs. target locations on ipsilateral-limb trials. Same format as in C.