Electrical Spinal Imaging: A noninvasive, high-resolution approach that enables electrophysiological mapping of the human spinal cord
Fig 3
Electoral Spinal Imaging (ESI): High-resolution images of spinal cord activity during somatosensory stimulation.
Bottom panel: Recordings obtained using 97 electrodes (2 electrodes located on the right and left ERB points, 63 dorsal electrodes spanning from the cervical (C2) to the thoracic (T8) segments, and 32 scalp electrodes). The electrode positions shown in the bottom right figurine and their recording of the response elicited by somatosensory stimulation (right) are color-coded such that neighboring channels have similar colors. Signals were referenced as described in Fig 1. Middle panel: Enlargement of the responses between 8 and 26 ms poststimulus. Top panel: Lower row shows dorsal and scalp maps with 1-ms resolution. The eN9, sP9, sN13, sP22, cN20 and cP25 peaks are labeled. Upper row enlarges the dorsum maps of spinal cord activity between 11 and 16 ms poststimulus. Note the peak of postsynaptic activity occurring around 13 ms poststimulus. The data underlying this figure can be found at https://doi.org/10.17605/OSF.IO/KHJCG.