Effect Of Transcutaneous Electrical Spinal Cord Stimulation On The Functional Activity Of Reciprocal And Presynaptic Inhibition In Healthy Subjects

The objective of our research was to examine an effect 20-minute electrical stimulation session the spinal cord (tESCS) on manifestation reciprocal and presynaptic inhibition in system shin antagonist muscles healthy individuals a state relative muscle rest weak effort, along with possible physiological mechanisms these manifestations. Material Methods — study involved 10 men 27 35 years age. Reciprocal evaluated by suppressing amplitude testing H-reflex m. soleus under conditions conditioning n. peroneus profundus tibialis interstimulus intervals 3 ms 100 ms, respectively. were recorded during tESCS area T11-T12 thoracic vertebrae at rest, combination voluntary muscular effort (5% maximum contraction), after stimulation. Results During severity decreased, inverting facilitation, while weakened only twentieth minute stimulation; postactivation period, activity processes corresponded background values. most pronounced prolonged observed when performing isometric contraction, which accompanied increase minutes exposure end remained unchanged complied expressed greater extent as well period. Conclusion Changes inhibitory interactions basis effects arbitrary tension could probably be explained fact that this case, interneuron circuits exposed wider range supraspinally descending ascending peripheral effects, compared rest.