| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
The Journal of Neurophysiology Vol. 80 No. 2 August 1998,
pp. 610-620
Copyright ©1998 The American Physiological Society
1 Physiologisches Institut, Christian-Albrechts Universität zu Kiel, 24098 Kiel, Germany; 2 Department of Medical Physiology, Division of Neurophysiology, Panum Institute, University of Copenhagen, 2200 Copenhagen N, Denmark; and 3 Centre of Sensory-Motor Interaction, Aalborg University, 9220 Aalborg Ø, Denmark
Morita, H., N. Petersen, L.O.D. Christensen, T. Sinkjær, and J. Nielsen. Sensitivity of H-reflexes and stretch reflexes to presynaptic inhibition in humans. J. Neurophysiol. 80: 610-620, 1998. The sensitivity of soleus H-reflexes, T-reflexes, and short-latency stretch reflexes (M1) to presynaptic inhibition evoked by a weak tap applied to the biceps femoris tendon or stimulation of the common peroneal nerve (CPN) was compared in 17 healthy human subjects. The H-reflex was strongly depressed for a period lasting up to 300-400 ms (depression to 48 ± 23%, mean ± SD, of control at a conditioning test interval of 70 ms) by the biceps femoris tendon tap. In contrast, the short-latency soleus stretch reflex elicited by a quick passive dorsiflexion of the ankle joint was not depressed. The soleus T-reflex elicited by an Achilles tendon tap was only weakly depressed (92 ± 8%). The H-reflex was also significantly more depressed than the T-reflex at long intervals (>15 ms) after stimulation of CPN (H-reflex 63 ± 14%, T-reflex 91 ± 13%; P < 0.01). However, the short-latency (2 ms) disynaptic reciprocal Ia inhibition evoked by stimulation of CPN was equally strong for H- and T-reflexes (H-reflex 72 ± 10%, T-reflex 67 ± 13%; P = 0.07). Peaks in the poststimulus time histogram (PSTH) of the discharge probability of single soleus motor units (n = 53) elicited by an Achilles tendon tap had a longer duration than peaks evoked by electrical stimulation of the tibial nerve (on average 5.0 ms as compared with 2.7 ms). All parts of the electrically evoked peaks were depressed by the conditioning biceps femoris tendon tap (average depression to 55 ± 27% of control; P < 0.001). A similar depression was observed for the initial 2 ms of the peaks evoked by the Achilles tendon tap (69 ± 48%; P < 0.001), but the last 2 ms were not depressed. Conditioning stimulation of the CPN at long intervals (>15 ms) also depressed all parts of the electrically evoked PSTH peaks (n = 34; average 65%; P < 0.001) but had only a significant effect on the initial 2 ms of the peaks evoked by the Achilles tendon tap (85%; P < 0.001). We suggest that the different sensitivity of mechanically and electrically evoked reflexes to presynaptic inhibition is caused by a difference in the shape and composition of the excitatory postsynaptic potentials underlying the two reflexes. This difference may be explained by a different composition and/or temporal dispersion of the afferent volleys evoked by electrical and mechanical stimuli. We conclude that it is not straightforward to predict the modulation of stretch reflexes based on observations of H-reflex modulation.
This article has been cited by other articles:
|
|
 |
|
  Z. Ghanim, J. C. Lamy, A. Lackmy, V. Achache, N. Roche, A. Penicaud, S. Meunier, and R. Katz Effects of galvanic mastoid stimulation in seated human subjects J Appl Physiol, March 1, 2009; 106(3): 893 - 903. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 W. Taube, C. Leukel, M. Schubert, M. Gruber, T. Rantalainen, and A. Gollhofer Differential Modulation of Spinal and Corticospinal Excitability During Drop Jumps J Neurophysiol, March 1, 2008; 99(3): 1243 - 1252. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 V. Marchand-Pauvert and C. Iglesias Properties of human spinal interneurones: normal and dystonic control J. Physiol., March 1, 2008; 586(5): 1247 - 1256. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.-F. Grosset, I. Mora, D. Lambertz, and C. Perot Changes in stretch reflexes and muscle stiffness with age in prepubescent children J Appl Physiol, June 1, 2007; 102(6): 2352 - 2360. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. Pasquet, A. Carpentier, and J. Duchateau Specific modulation of motor unit discharge for a similar change in fascicle length during shortening and lengthening contractions in humans J. Physiol., December 1, 2006; 577(2): 753 - 765. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Rossignol, R. Dubuc, and J.-P. Gossard Dynamic Sensorimotor Interactions in Locomotion Physiol Rev, January 1, 2006; 86(1): 89 - 154. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Shinohara, C. T. Moritz, M. A. Pascoe, and R. M. Enoka Prolonged muscle vibration increases stretch reflex amplitude, motor unit discharge rate, and force fluctuations in a hand muscle J Appl Physiol, November 1, 2005; 99(5): 1835 - 1842. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. Mazzaro, M. J. Grey, T. Sinkjaer, J. B. Andersen, D. Pareyson, and M. Schieppati Lack of On-Going Adaptations in the Soleus Muscle Activity During Walking in Patients Affected by Large-Fiber Neuropathy J Neurophysiol, June 1, 2005; 93(6): 3075 - 3085. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. Mazzaro, M. J. Grey, and T. Sinkjaer Contribution of Afferent Feedback to the Soleus Muscle Activity During Human Locomotion J Neurophysiol, January 1, 2005; 93(1): 167 - 177. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. B. Nielsen Sensorimotor integration at spinal level as a basis for muscle coordination during voluntary movement in humans J Appl Physiol, May 1, 2004; 96(5): 1961 - 1967. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Bove, A. Nardone, and M. Schieppati Effects of leg muscle tendon vibration on group Ia and group II reflex responses to stance perturbation in humans J. Physiol., July 15, 2003; 550(2): 617 - 630. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Lambertz, F. Goubel, R. Kaspranski, and C. Perot Influence of long-term spaceflight on neuromechanical properties of muscles in humans J Appl Physiol, February 1, 2003; 94(2): 490 - 498. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. S. Pyndt and J. B. Nielsen Modulation of Transmission in the Corticospinal and Group Ia Afferent Pathways to Soleus Motoneurons During Bicycling J Neurophysiol, January 1, 2003; 89(1): 304 - 314. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Enriquez-Denton, H. Morita, L.O.D. Christensen, N. Petersen, T. Sinkjaer, and J. B. Nielsen Interaction Between Peripheral Afferent Activity and Presynaptic Inhibition of Ia Afferents in the Cat J Neurophysiol, October 1, 2002; 88(4): 1664 - 1674. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. R. Chalmers and K. M. Knutzen Soleus H-Reflex Gain in Healthy Elderly and Young Adults When Lying, Standing, and Balancing J. Gerontol. A Biol. Sci. Med. Sci., August 1, 2002; 57(8): B321 - 329. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. R. Chalmers and K. M. Knutzen Soleus Hoffmann-Reflex Modulation During Walking in Healthy Elderly and Young Adults J. Gerontol. A Biol. Sci. Med. Sci., December 1, 2000; 55(12): 570B - 579. [Abstract] [Full Text]
|
|
|
|
|
|
J. E. Misiaszek, S. J. de Serres, R. B. Stein, W. Jiang, and K. G. Pearson Stretch and H Reflexes in Triceps Surae Are Similar During Tonic and Rhythmic Contractions in High Decerebrate Cats J Neurophysiol, April 1, 2000; 83(4): 1941 - 1950. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T Sinkjaer, J B Andersen, M Ladouceur, L O D Christensen, and J B Nielsen Major role for sensory feedback in soleus EMG activity in the stance phase of walking in man J. Physiol., March 15, 2000; 523(3): 817 - 827. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |
