Journal: bioRxiv
Article Title: High-Frequency Stimulation Does Not Improve Comfort of Transcutaneous Spinal Cord Stimulation
doi: 10.1101/2022.09.06.506783
Figure Lengend Snippet: Experimental setup and procedures. The top bar shows the experimental timeline for collecting each measure. Waveform 1 (W1) and waveform 2 (W2) were either a conventional monophasic pulse or high-frequency burst pulse, the order of which was pseudo-randomized across participants. The bottom left shows the experimental setup with electrode placements. Electromyography (EMG) electrodes were placed on the soleus (SOL), lateral gastrocnemius (LG), medial gastrocnemius (MG), and tibialis anterior (TA) muscles. Transcutaneous spinal cord stimulation (tSCS) was delivered using a round electrode placed lateral to the T12-L1 spinal levels. The tSCS return electrode was placed on the anterior superior iliac spine. The inset of the round electrode shows the location of the electrode relative to the midline of the spine. The bottom right shows the two different waveforms studied. M max = motor maximum; PRM = posterior root muscle; Thresh = threshold; Max = maximum; RC = recruitment curve; RDD = rate-dependent depression, SDCurve = strength-duration curve.
Article Snippet: We placed a round adhesive electrode for tSCS (3.2 cm diameter; ValuTrode, Axelgaard Manufacturing Co. Ltd., USA) paravertebrally left of the T12-L1 spinous processes, and a large rectangular electrode (7.5×13 cm, ValuTrode, Axelgaard Manufacturing Co. Ltd., USA) on the left anterior superior iliac spine.
Techniques: