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. Author manuscript; available in PMC: 2013 May 2.
Published in final edited form as: Annu Rev Neurosci. 2011;34:205–231. doi: 10.1146/annurev-neuro-061010-113728

Figure 4.

Figure 4

Effects of reversible inactivation with lidocaine on head-unrestrained gaze shifts. (a) Position and (b) velocity waveforms of several ∼40° gaze shifts are plotted before (blue) and after (red) a microinjection in the caudal superior colliculus. The onsets of both gaze and head components are delayed, but the head movement initiates sooner. Thus, the eyes counter-rotate in the orbits before gaze onset (arrows). Peak gaze velocity is also reduced after the inactivation. In contrast, the peak head velocity sometimes increases a modest amount. Adapted from Walton et al. (2008), with permission.