Characterizing the effect of low intensity transcranial magnetic stimulation on the soleus H-reflex at rest
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RESEARCH ARTICLE
Characterizing the effect of low intensity transcranial magnetic stimulation on the soleus H‑reflex at rest Jennifer C. Andrews1 · Tejas Sankar2 · Richard B. Stein3 · François D. Roy1 Received: 2 March 2020 / Accepted: 8 July 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Modulation of a Hoffmann (H)-reflex following transcranial magnetic stimulation (TMS) has been used to assess the nature of signals transmitted from cortical centers to lower motor neurons. Further characterizing the recruitment and time-course of the TMS-induced effect onto the soleus H-reflex adds to the discussion of these pathways and may improve its utility in clinical studies. In 10 healthy controls, TMS was used to condition the soleus H-reflex using TMS intensities from 65 to 110% of the resting motor threshold (RMT). Early facilitation [− 5 to − 3 ms condition-test (C-T) interval] was evident when TMS was 110% of RMT (P
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