scholarly journals Erratum: “The Influence of Modeling Separate Neuromuscular Compartments on the Force and Moment Generating Capacities of Muscles of the Feline Hindlimb” [J. Biomech. Eng., 2010, 132, p. 081003]

2010 ◽  
Vol 132 (12) ◽  
Author(s):  
Lisa N. MacFadden ◽  
Nicholas A. T. Brown
Keyword(s):  
Neuromuscular Compartments

Activity of neuromuscular compartments in lateral gastrocnemius evoked by postural corrections during stance

1993 ◽  
Vol 70 (6) ◽  
pp. 2337-2349 ◽  
Author(s):  
D. C. Dunbar ◽  
J. M. Macpherson
Keyword(s):  
Three Dimensional ◽  
Area Under The Curve ◽  
Gluteus Medius ◽  
Emg Activity ◽  
Support Surface ◽  
Lateral Gastrocnemius ◽  
Tuning Curves ◽  
Postural Responses ◽  
Upward Displacement ◽  
Neuromuscular Compartments

1. The electromyographic (EMG) activity of the four neuromuscular compartments in lateral gastrocnemius (LG) of cats was investigated to determine whether these intramuscular subdivisions could be activated differentially during automatic postural corrections. EMG electrodes were surgically implanted into each of the four compartments of left LG-LG1, LG2, LG3, and LGm--in two cats. Electrodes were also implanted into soleus and gluteus medius for comparative purposes. 2. Quiet quadrupedal stance was disturbed first by linearly translating the cats on a movable platform in each of 16 different horizontal directions. Mechanical events during corrections were characterized in terms of the three-dimensional forces exerted by each paw on the platform. EMG and force traces were quantified (area under the curve) and normalized, and tuning curves were constructed that relate muscle response and force change to direction of platform movement. 3. In a second series of trials, translations were presented along one direction only over a series of six velocities ranging from 5 to 16 cm/s. The third series of perturbations, termed the pop-up, consisted of a rapid upward displacement of the support under the left hindlimb only over a series of six amplitudes ranging from 1 to 10 mm. Evoked EMG activity and average change in force were normalized and regressions were computed onto velocity and amplitude, respectively. The slopes of the regressions were compared. 4. EMG tuning curves associated with the multidirectional horizontal translations revealed no differential activity across LG compartments. Similarly, there was no statistical difference among the slopes of the regressions within LG. In contrast, soleus exhibited significantly different slopes from LG for the regressions. Thus it is concluded that LG compartments are not differentially activated during automatic postural responses to perturbations of the support surface.

Region-Specific Functional Role Of The Neuromuscular Compartments Of The Human Medial Gastrocnemius Muscle

2014 ◽  
Vol 46 ◽  
pp. 672
Author(s):  
Chihiro Edamatsu ◽  
kazuki kusumoto ◽  
narumi fujimoto ◽  
akinori kanda ◽  
hidetaka yamaguchi ◽  
...  
Keyword(s):  
Functional Role ◽  
Gastrocnemius Muscle ◽  
Medial Gastrocnemius ◽  
Neuromuscular Compartments ◽  
Medial Gastrocnemius Muscle

Selective activation of neuromuscular compartments within the human trapezius muscle

2009 ◽  
Vol 19 (5) ◽  
pp. 896-902 ◽  
Author(s):  
A. Holtermann ◽  
K. Roeleveld ◽  
P.J. Mork ◽  
C. Grönlund ◽  
J.S. Karlsson ◽  
...  
Keyword(s):  
Trapezius Muscle ◽  
Selective Activation ◽  
Neuromuscular Compartments

Torques Produced by Different Compartments of the Rabbit Masseter Muscle

1999 ◽  
Vol 15 (4) ◽  
pp. 348-360 ◽  
Author(s):  
Arthur W. English ◽  
Dario I. Carrasco ◽  
Charles G. Widmer
Keyword(s):  
Mechanical Properties ◽  
Masseter Muscle ◽  
Neural Control ◽  
Adult Rabbit ◽  
Torque Vector ◽  
Single Compartment ◽  
Force Moment ◽  
Reaction Forces ◽  
Neuromuscular Compartments ◽  
Masseter Muscles

Intramuscular microstimulation was used to evaluate the mechanical properties of 6 different neuromuscular compartments of four adult rabbit masseter muscles. Single compartment stimulation was verified by simultaneous multichannel electromyo-graphic recordings. A multi-axis force-moment sensor was used to measure evoked reaction forces at the mandibular symphysis, and these records were used to determine the magnitude and directions of the torques produced about the ipsilateral temoromandibular joint. The magnitude of the resultant torque vector differed between compartments. The most superficial compartments of the superficial masseter (MSSla, MSSlp) produced the largest torques, and compartments of the superficial masseter lying more caudal, such as MSS3, produced the smallest torques. The rise time of this vector was shortest for the posterior deep masseter (MPPo) compartment and longest for compartment MSSla. The directions of the torque vectors of different compartments varied considerably. Torque vectors of deep compartments such as MPPo, and the pars reflexa of the superficial masseter (MSPR) produced significant yaw torques toward the working masseter but very small lingual roll torques. Torque vectors from superficial compartments such as MSSI contain larger lingual roll components and smaller working yaw components. These observations are consistent with the hypothesis that neuromuscular compartments of the rabbit masseter muscle form output elements in the neural control of masticatory movements.

The Neuromuscular Compartments of the Flexor Carpi Ulnaris

1999 ◽  
Vol 103 (3) ◽  
pp. 1053-1054 ◽  
Author(s):  
Aymeric Y. T. Lim ◽  
Prem V. Kumar ◽  
Jiang Hua ◽  
Barry P. Pereira ◽  
Robert W. H. Pho ◽  
...  
Keyword(s):  
Flexor Carpi Ulnaris ◽  
Neuromuscular Compartments

Neuromuscular compartments in the long head of triceps: A morphological study in rabbits

1997 ◽  
Vol 20 (7) ◽  
pp. 897-899 ◽  
Author(s):  
Jie Liu ◽  
V. Prem Kumar ◽  
Hui-King Lau ◽  
Barry P. Pereira ◽  
Yan Shen ◽  
...  
Keyword(s):  
Morphological Study ◽  
Long Head ◽  
Neuromuscular Compartments

Symposium Changing perspectives on the functional organization of the segmental motor system

1986 ◽  
Vol 64 (4) ◽  
pp. 495-498 ◽  
Author(s):  
Marc D. Binder
Keyword(s):  
Skeletal Muscles ◽  
Motor System ◽  
Functional Organization ◽  
Motor Units ◽  
Muscle Spindles ◽  
Spinal Reflex ◽  
Reflex Pathways ◽  
Afferent Fibers ◽  
Neuromuscular Compartments ◽  
Tendon Organs

Results from a wide variety of recent studies on the architecture and innervation of skeletal muscles, the neuromechanical characteristics of motor units, and the properties and spinal reflex actions of muscle proprioceptors present a number of challenges to conventional views of the functional organization of the segmental motor system. To illustrate the nature of these challenges, studies directed toward several specific issues are reviewed. These include the functional subdivision of single muscles into two or more neuromuscular compartments; the patterns of synaptic input from peripheral afferent fibers to motoneurons innervating muscle units of different "type;" and the convergence in the segmental reflex pathways from muscle spindles and tendon organs to motoneurons.

Sexual Dimorphism in the Rabbit Masseter Muscle: Myosin Heavy Chain Composition of Neuromuscular Compartments

1999 ◽  
Vol 164 (4) ◽  
pp. 179-191 ◽  
Author(s):  
Arthur W. English ◽  
Jane Eason ◽  
Gail Schwartz ◽  
Anne Shirley ◽  
Dario I. Carrasco
Keyword(s):  
Sexual Dimorphism ◽  
Myosin Heavy Chain ◽  
Heavy Chain ◽  
Masseter Muscle ◽  
Chain Composition ◽  
Myosin Heavy Chain Composition ◽  
Neuromuscular Compartments ◽  
Muscle Myosin
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