Compound group I excitatory input is differentially distributed to human soleus motoneurons

• Published in: Clinical neurophysiology Vol. 123; no. 11; pp. 2192 - 2199
• Main Authors: BINBOGA, Erdal, TÜRKER, Kemal S
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ireland Ltd 01.11.2012; Elsevier
• Subjects: Adult; Biological and medical sciences; Electric Stimulation; Electrodiagnosis. Electric activity recording; Electromyography - methods; Female; Fundamental and applied biological sciences. Psychology; H-reflex; H-Reflex - physiology; Human motor unit; Humans; Investigative techniques, diagnostic techniques (general aspects); Male; Medical sciences; Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration; Motor Neurons - physiology; Muscle, Skeletal - innervation; Nervous system; Neurology; Neurons, Afferent - physiology; Recruitment threshold; Recruitment, Neurophysiological - physiology; Size principle; Soleus muscle; Synapses - physiology; Tibial Nerve - physiology; Vertebrates: nervous system and sense organs; Size principle; Recruitment threshold; Soleus muscle; H-reflex; Human motor unit; Human; Spike; Tibial nerve; Electrical stimulus; Physiotherapy; H-Reflex; Stimulus intensity; Motor neuron; Surface electromyography; Motor unit; Recruitment; Electrodiagnosis; Preparation
• ISSN: 1388-2457; 1872-8952
• DOI: 10.1016/j.clinph.2012.04.005

Highlights ► We studied whether the distribution of group I excitatory input to human soleus motoneurons supports the size principle of motor unit recruitment. ► Size of the H-reflex response was compared in simultaneously recorded motor units. ► We found that the size of the H-reflex is bigger in larger cells, which does not support the development of orderly recruitment of motor units in human soleus muscle.