Synchronization of motor units in human soleus muscle during standing postural tasks

Journal of Neurophysiology

Volumn 94, Issue 1, 2005, Pages 62-69

  Mochizuki, G ^a   Ivanova, T D ^a   Garland, S J ^a  

^a UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

ADULT; ARTICLE; BODY POSITION; BODY POSTURE; CELL SYNCHRONIZATION; CONTROLLED STUDY; CORRELATION ANALYSIS; EYE; FEMALE; FORCE; HUMAN; HUMAN EXPERIMENT; LEG; MALE; MOTONEURON; MOTOR UNIT; MUSCLE ISOMETRIC CONTRACTION; NERVE CONDUCTION; NORMAL HUMAN; PRIORITY JOURNAL; SOLEUS MUSCLE; STANDING; SYNAPSE; TASK PERFORMANCE;

ACTION POTENTIALS; ADULT; ELECTROMYOGRAPHY; EYE; FEMALE; FUNCTIONAL LATERALITY; HUMANS; ISOMETRIC CONTRACTION; MALE; MOTOR NEURONS; MUSCLE, SKELETAL; MUSCULOSKELETAL EQUILIBRIUM; POSTURE; STATISTICS;

EID: 21544470236     PISSN: 00223077     EISSN: None     Source Type: Journal    
DOI: 10.1152/jn.01322.2004     Document Type: Article

References (54)

1. Asanuma H, Zarzeck P, Jankowska E, Hongo T, and Marcus S. Projection of individual pyramidal tract neurons to lumbar motor nuclei of the monkey. Exp Brain Res 34: 73-89, 1979.
2. Bremner FD, Baker JR, and Stephens JA. Correlation between the discharges of motor units recorded from the same and from different finger muscles in man. J Physiol 432: 355-380, 1991.
3. Brouwer B and Ashby P. Corticospinal projections to upper and lower limb spinal motoneurons in man. Electroencephalogr Clin Neurophysiol 76: 509-519, 1990.
4. Brouwer B and Ashby P. Corticospinal projections to lower limb motoneurons in man. Exp Brain Res 89: 649-654, 1992.
5. Carr LJ, Harrison LM, and Stephens JA. Evidence for bilateral innervation of certain homologous motoneurone pools in man. J Physiol 475: 217-227, 1994.
6. Cernacek J. Stabilography in neurology. Agressologie 21D: 25-29, 1980.
7. Datta AK, Farmer SF, and Stephens JA. Central nervous pathways underlying synchronization of human motor unit firing studied during voluntary contractions. J Physiol 432: 401-425, 1991.
8. Datta AK and Stephens JA. Synchronization of motor unit activity during voluntary contraction in man. J Physiol 422: 397-419, 1990.
9. Dichgans J, Mauritz KH, Allum JHJ, and Brandt T. Postural sway in normals and atactic patients: analysis of the stabilizing and destabilizing effects of vision. Agressologie 17C: 15-24, 1976.
10. Diener HC, Bootz F, Dichgans J, and Bruzek W. Variability of postural "reflexes" in humans. Exp Brain Res 52: 423-428, 1983.
11. Dieterich M, Bense S, Lutz S, Drzezga A, Stephan T, Bartenstein P, and Brandt T. Dominance for vestibular cortical function in the non-dominant hemisphere. Cereb Cortex 13: 994-1007, 2003.
12. Dietz V, Bischofberger E, Wita C, and Freund H-J. Correlation between the discharges of two simultaneously recorded motor units and physiological tremor. Electroencephalogr Clin Neurophysiol 40: 97-105, 1976.
13. Duysens J, Tax AAM, van der Doelen B, Trippel M, and Dietz V. Selective activation of human soleus or gastrocnemius in reflex responses during walking and running. Exp Brain Res 87: 193-204, 1991.
14. Ellaway PH. Cumulative sum technique and its application to the analysis of peristimulus time histograms. EEG Clin Neurophysiol 45: 302-304, 1978.
15. Ellaway PH and Murthy KSK. The origins and characteristics of cross-correlated activity between γ-motoneurones in the cat. Q J Exp Physiol 70: 219-232, 1985.
16. Farmer SF, Bremner FD, Halliday DM, Rosenberg JR, and Stephens JA. The frequency content of common synaptic inputs to motoneurones studied during voluntary isometric contraction in man. J Physiol 470: 127-155, 1993a.
17. Farmer SF, Swash M, Ingram DA, and Stephens JA. Changes in motor unit synchronization following central nervous lesions in man. J Physiol 463: 83-105, 1993b.
18. Fasold O, von Brevern M, Kuhberg M, Ploner CJ, Villringer A, Lempert T, and Wenzel R. Human vestibular cortex as identified with caloric stimulation in functional magnetic resonance imaging. NeuroImage 17: 1384-1393, 2002.
19. Garland SJ and Miles TS. Control of motor units in human flexor digitorum profundus under different proprioceptive conditions. J Physiol 502: 693-701, 1997.
20. Gatev P, Thomas S, Kepple T, and Hallett M. Feedforward ankle strategy of balance during quiet stance in adults. J Physiol 514: 915-928, 1999.
21. Gibbs J, Harrison LM, and Stephens JA. Organization of inputs to motoneurone pools in man. J Physiol 485: 245-256, 1995.
22. Gollnick PD, Sjödin B, Karlsson J, Jansson E, and Saltin B. Human soleus muscle: a comparison of fiber composition and enzyme activities with other leg muscles. Pfluegers 348: 247-255, 1974.
23. Grillner S, Hongo T, and Lund S. The vestibulospinal tract. Effects on alpha-motoneurones in the lumbosacral spinal cord in the cat. Exp Brain Res 10: 94-120, 1970.
24. Halliday DM, Conway BA, Christensen LOD, Hansen NL, Petersen NP, and Nielsen JB. Functional coupling of motor units is modulated during walking in human subjects. J Neurophysiol 89: 960-968, 2003.
25. Hansen NL, Hansen S, Christensen LOD, Petersen NT, and Nielsen JB. Synchronization of lower limb motor unit activity during walking in human subjects. J Neurophysiol 86: 1266-1276, 2001.
26. Herzog W. Muscle properties and coordination during voluntary movement. J Sports Sci 18: 141-152, 2000.
27. Hodgson JA. The relationship between soleus and gastrocnemius muscle activity in conscious cats-a model for motor unit recruitment? J Physiol 337: 553-562, 1983.
28. Jankowska E and Lundberg A. Interneurones in the spinal cord. Trends Neurosci 4: 230-233, 1981.
29. Jankowska E, Padel Y, and Tanaka R. Projections of pyramidal tract cells to alpha motoneurons innervating hind limb muscles in the monkey. J Physiol 249: 637-667, 1975.
30. Kamen G, Greenstein SS, and De Luca CJ. Lateral dominance and motor unit firing behavior. Brain Res 576: 165-167, 1992.
31. Kawakami Y, Ichinose Y, and Fukunaga T. Architectural and functional features of human triceps surae muscles during contraction. J Appl Physiol 85: 398-404, 1998.
32. Keen DA and Fuglevand AJ. Common input to motor neurons innervating the same and different compartments of the human extensor digitorum muscle. J Neurophysiol 91: 57-62, 2004.
33. Kirkwood PA, Sears TA, Tuck DL, and Westgaard RH. Variations in the time course of the synchronization of intercostals motoneurones in the cat. J Physiol 327: 105-135, 1982.
34. Lucy SD and Hayes KC. Postural sway profiles: normal subjects and subjects with cerebellar ataxia. Physiother Can 37: 140-148, 1985.
35. Mano T, Hibino R, Mitarai G, Watanabe S, Jijiwa H, Baron J-B, and Toma S. Electrophysiological study on vestibulo-spinal reflex in man. Agressologie 17A: 71-76, 1976.
36. Masani K, Popovic MR, Nakazawa K, Kouzaki M, and Nozaki D. Importance of body sway velocity information in controlling ankle extensor activities during quiet stance. J Neurophysiol 90: 3774-3782, 2003.
37. Mochizuki G, Ivanova TD, and Garland SJ. Postural muscle activity during bilateral and unilateral arm movements at different speeds. Exp Brain Res 155: 352-361, 2004a.
38. Mochizuki G, Semmler JG, Ivanova TD, and Garland SJ. Control of Bilateral Motor Units in Human Soleus Muscle During Standing Postural Tasks. Washington, DC: Society for Neuroscience, 2004b.
39. Nielsen J and Kagamihara Y. Synchronization of human leg motor units during co-contraction in man. Exp Brain Res 102: 84-94, 1994.
40. Nordstrom MA, Fuglevand AJ, and Enoka RM. Estimating the strength of common input to human motoneurons from the cross-correlogram. J Physiol 453: 547-574, 1992.
41. Schmied A, Ivarsson C, and Fetz EE. Short-term synchronization of motor units in human extensor digitorum communis muscle: relation to contractile properties and voluntary control. Exp Brain Res 97: 159-172, 1993.
42. Schmied A, Pagni S, Sturm H, and Vedel J-P. Selective enhancement of motoneurone short-term synchrony during an attention-demanding task. Exp Brain Res 133: 377-390, 2000.
43. Sears TA and Stagg D. Short-term synchronization of intercostals motoneurone activity. J Physiol 263: 357-381, 1976.
44. Semmler JG. Motor unit synchronization and neuromuscular performance. Exerc Sport Sci Rev 30: 8-14, 2002.
45. Semmler JG, Kornatz KW, Dinenno DV, Zhou S, and Enoka RM. Motor unit synchronization is enhanced during slow lengthening contractions of a hand muscle. J Physiol 545: 681-695, 2002.
46. Semmler JG and Nordstrom MA. Influence of handedness on motor unit discharge properties and force tremor. Exp Brain Res 104: 115-125, 1995.
47. Semmler JG and Nordstrom MA. Motor unit discharge and force tremor in skill- and strength-trained individuals. Exp Brain Res 119: 27-38, 1998.
48. Shinoda Y, Ohgaki T, and Futami T. The morphology of single lateral vestibulospinal tract axons in the lower cervical spinal cord of the cat. J Comp Neurol 249: 226-241, 1986.
49. Wiegner AW and Wierzbicka MM. A method for assessing significance of peaks in cross-correlation histograms. J Neurosci Methods 22: 125-131, 1987.
50. Winter DA. Biomechanics and Motor Control of Human Movement, 2nd ed. New York: Wiley, 1990.
51. Winter DA, Patla AE, Prince F, Ishac M, and Gielo-Perczak K. Stiffness control of balance in quiet standing. J Neurophysiol 80: 1211-1221, 1998.
52. Winter DA, Prince F, Frank JS, Powell C, and Zabjik KF. A unified theory regarding A/P and M/L balance in quiet stance. J Neurophysiol 75: 2334-2343, 1996.
53. Winter DA, Prince F, Stergiou P, and Powell C. Medial-lateral and anterior-posterior motor responses associated with centre of pressure changes in quiet standing. Neurosci Res Commun 12: 141-148, 1993.
54. Yao W, Fuglevand AJ, and Enoka RM. Motor-unit synchronization increases EMG amplitude and decreases force steadiness of simulated contractions. J Neurophysiol 83: 441-452, 2000.