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Fig. 1 | Trials

Fig. 1

From: Personalized upper limb training combined with anodal-tDCS for sensorimotor recovery in spastic hemiparesis: study protocol for a randomized controlled trial

Fig. 1

Spatial thresholds (STs) in healthy and stroke participants. a The tonic stretch reflex threshold (TSRT) can be regulated throughout a range (filled bar) that exceeds the biomechanical range of the joint (open bar). Relaxation and active force can be produced at any angle within the biomechanical range. b The intersection of the diagonal line with the zero-velocity line defines the TSRT. In healthy subjects, TSRT lies outside of the biomechanical range of the joint (arrow) during the relaxed state. c In patients with stroke, TSRT may lie within the biomechanical range in the relaxed state, defining the joint angle at which spasticity begins to appear (spasticity zone). In the other joint ranges, spasticity is not present (active zone)

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