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. 2017 Apr 12;37(15):4032–4045. doi: 10.1523/JNEUROSCI.2626-16.2017

Figure 4.

Figure 4.

Discharge properties of Group I and Group II abducens motor units. A, B, Average rotation-evoked firing rate modulation (±SEM, shaded areas) of spontaneously active (sa) Group I (A1, n = 12) and Group II (A2, n = 10) and silent (s) Group I (B1, n = 7) and Group II (B2, n = 6) motor units over a single rotation cycle at a stimulus frequency of 0.5 Hz and varying peak velocities (left in A1, A2), at a stimulus peak velocity of ±30°/s and varying frequencies (middle in A1, A2; B1, B2) and at different peak amplitude/frequency combinations that always drive the eye to the same eccentric position (right in A1, A2); dashed gray sine waves indicate head motion stimulus velocity (Hvel). C, D, Dependency of the maximal discharge modulation depth (C1, C2, D1, D2) and phase re stimulus velocity (C3, C4, D3, D4) of rotation-evoked responses (±SEM) on stimulus peak velocity (C1, C3, D1, D3) and frequency (C2, C4, D2, D4) in spontaneously active (C) and silent (D) Group I (black) and Group II (red) motor units.