Fig. 8.

HPNI persistence and plasticity without commissure. A and B: FR (Hz) eye position records, and FR versus eye position plots during spontaneous fixation in darkness for 2 ipsilateral-eye related HPNI neurons. A: LE FR coefficients were 0.84 (spike/s)/° and 0.23 (spike/s) per °/s, (r = 0.81). RE FR constants were 0.72 (spike/s)/° and 0.33 spike/s [per] °/s, (r = 0.58). B: LE FR 1.45 (spike/s)/° and 0.63 (spike/s) per °/s, (r = 0.76) with RE FR 1.18 (spike/s)/° and 0.17 (spike/s) per °/s, (r = 0.49). C: HPNI modulation in A by head and eye velocity at 0.125 Hz during OKR and VOR. D: P-V plots and behavior 5 days after a midline lesion (c in Fig. 7C) of RE in darkness (control: 79.4 s), 2 h after leak training (5.3 s), and 4 h after instability training (−1.5 s).