Work

Excitability of posterior root reflex evoked by transcutaneous spinal stimulation is distinct from the H-reflex in the soleus muscle: a pulse duration study

Year: 2026

Type: article

Abstract: Direct comparison of the soleus PRR and H-reflex excitability reveals that the PRR activates a larger proportion of the motoneuron pool and exhibits a markedly higher rheobase and shorter chronaxie, reflecting differences in tissue properties and stimulation geometry. The shorter PRR chronaxie implies that PRR can be efficiently elicited with a pulse duration of less than 1 ms, as adopted from H-reflex protocols.

Source: Journal of Neurophysiology

DOI: 10.1152/jn.00147.2026

Authors: Matthias J. Krenn, Elizabeth A. Gordineer, Dobrivoje S. Stokic

Institutions: University of Mississippi Medical Center, Methodist Rehabilitation

Language: English

Topic: Muscle activation and electromyography studies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funders: Wings for Life, National Institutes of Health, National Institute of General Medical Sciences

Awards: G1639771052, G7029973743