Fig. 2.

Grand mean EEG/ECeG and EMG recordings to C7 stimulation during standing with anterior lean and eyes open. A The evoked EEG/ECeG response was characterised by a series of positive and negative waves (P13, N19, P25, N32, P50 and N62) and was present mainly in the Iz row of electrodes. B The evoked EMG response was characterised by an excitation recorded in the soleus muscles, consistent with the agonist muscle acting to counter the postural threat of an anterior perturbation. A smaller excitation can also be observed in the tibialis anterior (TA) muscle group. Stimulus artefact has been clipped to improve response clarity