JN Ad Instruments
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Neurophysiol 74: 2211-2215, 1995;
0022-3077/95 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (25)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Smith, J. L.
Right arrow Articles by Carlson-Kuhta, P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Smith, J. L.
Right arrow Articles by Carlson-Kuhta, P.

Journal of Neurophysiology, Vol 74, Issue 5 2211-2215, Copyright © 1995 by APS

ARTICLES

Unexpected motor patterns for hindlimb muscles during slope walking in the cat

J. L. Smith and P. Carlson-Kuhta
Department of Physiological Science, University of California, Los Angeles 90095-1568, USA.

1. Hindlimb kinematics and motor patterns were assessed from high-speed cine film synchronized with electromyographic (EMG) data from cats trained to walk on a walkway placed at four grades (25, 50, 75, and 100%). 2. Flexor muscles of the hip (iliopsoas) and ankle (tibialis anterior) had similar activity patterns for the swing phase of up- and down-slope walking; both flexor muscles also had stance-related activity during down-slope walking and this was unexpected. Extensor muscles of the hip (anterior biceps femoris and anterior semimembranosus), knee [vastus lateralis (VL)], and ankle [lateral gastrocnemius (LG)] were active during the stance phase of up-slope walking. The VL and LG activity was reduced in duration during stance of down-slope walking and centered around paw contact. Hip extensors, however, were totally inactive during stance of down-slope walking, and this was not expected. 3. Flexor muscles at the hip and ankle (not extensor muscles) dominated the stance phase of down-slope walking, especially at the steeper slopes. This switch in motor patterns may be required to counterbalance external forces that produced extension at the hip and ankle joints during the stance phase of down-slope walking. Neural mechanisms for programming stance-related activity of flexor muscles are discussed.


This article has been cited by other articles:


Home page
 J. Neurophysiol.Home page
R. J. Gregor, D. W. Smith, and B. I. Prilutsky
Mechanics of Slope Walking in the Cat: Quantification of Muscle Load, Length Change, and Ankle Extensor EMG Patterns
J Neurophysiol, March 1, 2006; 95(3): 1397 - 1409.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
G. B. Gillis and A. A. Biewener
Effects of surface grade on proximal hindlimb muscle strain and activation during rat locomotion
J Appl Physiol, November 1, 2002; 93(5): 1731 - 1743.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
K. Matsuyama and T. Drew
Vestibulospinal and Reticulospinal Neuronal Activity During Locomotion in the Intact Cat. II. Walking on an Inclined Plane
J Neurophysiol, November 1, 2000; 84(5): 2257 - 2276.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
D. A. Homonko and E. Theriault
Downhill running preferentially increases CGRP in fast glycolytic muscle fibers
J Appl Physiol, November 1, 2000; 89(5): 1928 - 1936.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
T. Lamb and J. F. Yang
Could Different Directions of Infant Stepping Be Controlled by the Same Locomotor Central Pattern Generator?
J Neurophysiol, May 1, 2000; 83(5): 2814 - 2824.
[Abstract] [Full Text] [PDF]

Home page
 Physiol. Rev.Home page
J. Duysens, F. Clarac, and H. Cruse
Load-Regulating Mechanisms in Gait and Posture: Comparative Aspects
Physiol Rev, January 1, 2000; 80(1): 83 - 133.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
C. C. Raasch and F. E. Zajac
Locomotor Strategy for Pedaling: Muscle Groups and Biomechanical Functions
J Neurophysiol, August 1, 1999; 82(2): 515 - 525.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
G. W. Hiebert and K. G. Pearson
Contribution of Sensory Feedback to the Generation of Extensor Activity During Walking in the Decerebrate Cat
J Neurophysiol, February 1, 1999; 81(2): 758 - 770.
[Abstract] [Full Text] [PDF]

Home page
 J. Exp. Biol.Home page
B. Jayne and D. Irschick
Effects of incline and speed on the three-dimensional hindlimb kinematics of a generalized iguanian lizard (Dipsosaurus dorsalis)
J. Exp. Biol., January 1, 1999; 202(2): 143 - 159.
[Abstract] [PDF]

Home page
 J. Neurophysiol.Home page
P. Carlson-Kuhta, T. V. Trank, and J. L. Smith
Forms of Forward Quadrupedal Locomotion. II. A Comparison of Posture, Hindlimb Kinematics, and Motor Patterns for Upslope and Level Walking
J Neurophysiol, April 1, 1998; 79(4): 1687 - 1701.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
J. L. Smith, P. Carlson-Kuhta, and T. V. Trank
Forms of Forward Quadrupedal Locomotion. III. A Comparison of Posture, Hindlimb Kinematics, and Motor Patterns for Downslope and Level Walking
J Neurophysiol, April 1, 1998; 79(4): 1702 - 1716.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
J. E. Misiaszek and K. G. Pearson
Stretch of Quadriceps Inhibits the Soleus H Reflex During Locomotion in Decerebrate Cats
J Neurophysiol, December 1, 1997; 78(6): 2975 - 2984.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online