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. 2021 Jan 7;14:598482. doi: 10.3389/fnins.2020.598482

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Copyright © 2021 Willoughby, Thoenes and Bolding.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Stimulation paradigm and scan coverage for somatosensory mapping with fMRI. (A) Colored circles represent approximate stimulator locations: glabella, neck near collarbone, anterior forearm, middle fingertip, trunk beneath ribcage, thigh, shin, and volar side of foot. Arrows within circles show approximate orientation of linear actuators. (B) Colored boxes depict timing of tactile stimuli. Top: forward sequence. Bottom: reverse sequence. Total stimulation period T was 72 s (40 s for subject F). Each stimulator was active for T/8 = 9 s (5 s for subject F) before switching to the next. Each run consisted of 5 stimulation periods (9 for subject F). (C) EPI slice coverage overlaid on T1-weighted MR images. Slices were stacked along the anterior-posterior axis. Phase encoding direction was right-left, indicated by the arrow in the axial view.