Fig. 3.

A Grand mean recordings from Iz show the evoked response to be present across the conditions tested, whereas the evoked EMG response in soleus was present only during standing (B). While the main effects of posture were not significant at Iz for amplitude (C) or latency (D), the prone position tended to produce larger and earlier responses. Vision did not affect EEG/ECeG or EMG evoked responses (E). For both EEG/ECeG and EMG evoked responses, anterior lean produced larger amplitudes than posterior lean (F). Baseline rectified EMG levels for soleus were 17.4 (prone), 30.5 (sitting), 54.7, 54.0 (standing, anterior lean, eyes open and closed) and 24.6 µV (posterior lean). *P < 0.05, **P < 0.01