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Fig. 2 | Journal of NeuroEngineering and Rehabilitation

Fig. 2

From: HAL® exoskeleton training improves walking parameters and normalizes cortical excitability in primary somatosensory cortex in spinal cord injury patients

Fig. 2

Paired-pulse somatosensory evoked potentials. Somatosensory evoked potentials over cortical CP3 or CP4 of one subject after single (continuous black trace) and paired-pulse stimulation with interstimulus interval of 30 ms (continuous grey trace). The triangles along the x-axis represent the applied electrical stimuli. The dotted black trace results by subtracting the single-pulse trace from the paired-pulse trace. The analyzed amplitudes of the first response (A1) and second response (A2) after paired-pulse stimulation are marked by vertical bars; amplitudes of the second response after subtracting the response to a single pulse are denoted as A2s

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