Functional Anatomy of the Association Between Motor Units and Muscle Receptors

Botterman, B. R.; Binder, Marc D.; Stuart, Douglas G.

doi:10.1093/icb/18.1.135

Cited by 225 publications

(62 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to the asymmetrical effects of anterior and middle biceps nerve branches onto anterior biceps and middle biceps-extensor motoneurones, it was INTRODUCTION In a series of reports from this laboratory, it has been emphasized that muscle receptors generate a 'sensory partitioning' oftheir muscle by responding preferentially to the length-tension changes in their immediate surroundings (Binder, Kroin, Moore, Stauffer & Stuart, 1976;Botterman, Binder & Stuart, 1978; Cameron, Binder, Botterman, Reinking & Stuart, 1980, 1981; see also Windhorst, 1978a, b;1979a, b). We have also argued that, for segmental motor control, such partitioning is only of significance if it can be shown to be paralleled by 'reflex partitioning' within the related motor nuclei of the spinal cord .…”

mentioning

confidence: 99%

Localization of monosynaptic Ia excitatory post‐synaptic potentials in the motor nucleus of the cat biceps femoris muscle.

Botterman

Hamm

Reinking

et al. 1983

The Journal of Physiology

125

View full text Add to dashboard Cite

Evidence is presented for the existence of a localization of monosynaptic Ia excitatory post‐synaptic potentials (e.p.s.p.s) in the motor nucleus of a cat hind limb muscle. Intracellular recordings from biceps femoris motoneurones were made in anaesthetized low spinal cats of the effects of stimuli to the nerve branches supplying the anterior, middle, and posterior portions of the biceps femoris muscle. Recordings were also made during stimulation of nerves to semimembranosus and semitendinosus in order to provide a means of categorizing middle biceps cells as ‘extensors’ (middle biceps‐extensor; i.e. like anterior biceps cells) or as ‘flexors’ (middle biceps‐flexor; like posterior biceps). Homonymous nerve‐branch (i.e. from anterior, middle or posterior biceps) monosynaptic Ia e.p.s.p.s were compared within unifunctional (flexor or extensor) groups of motoneurones. In three of four comparisons (anterior biceps nerve branch onto anterior and middle biceps‐extensor cells, middle biceps onto middle biceps‐flexor and posterior biceps, posterior biceps onto middle biceps‐flexor and posterior biceps) the anterior, middle and posterior biceps nerve branches contributed larger e.p.s.p.s to their ‘own’ motoneurones than to motoneurones supplying other ‘compartments’ of the muscle. In the fourth case, middle biceps's input appeared to have similar effects onto anterior biceps and middle biceps‐extensor cells. A normalization was performed to eliminate the possibility that the differences in e.p.s.p. sizes were due to differences in cell type within the four cell groupings (i.e. differences in the number of cells supplying FF, F(int.), FR and S muscle units). This normalization confirmed that the localization in the first three comparisons was not a consequence of differences in motoneurone type and, in addition, suggested that middle biceps may indeed have greater effects on middle biceps‐extensor than anterior biceps cells. In addition to the asymmetrical effects of anterior and middle biceps nerve branches onto anterior biceps and middle biceps‐extensor motoneurones, it was shown that while semitendinosus and posterior biceps contributed larger e.p.s.p.s to middle biceps‐flexor than to middle biceps‐extensor cells, the anterior biceps nerve branch and semimembranosus nerve contributed equally to the two middle biceps groups. Analysis of cell location in the spinal cord and rostro‐caudal differences in group I volley sizes gave evidence of a topographic organization of the biceps femoris motor nucleus which could contribute to the observed localization. However, localization was also evident when comparing e.p.s.p. amplitudes in pairs of neighbouring cells of different category, indicating a role for neuronal recognition factors.

show abstract

mentioning

confidence: 99%

Localization of monosynaptic Ia excitatory post‐synaptic potentials in the motor nucleus of the cat biceps femoris muscle.

Botterman

Hamm

Reinking

et al. 1983

The Journal of Physiology

125

View full text Add to dashboard Cite

show abstract

“…Most primary fasciculi were composed of three muscle fiber types: type A, B and C classified by Stein and Padykula (29). Significant differences in the percentage of type B plus type C fibers (Pbc) and the percentage of type C fibers (Pc) were found in different regions (origin, belly, and insertion), and in different parts (the deepest masseter, anterior deep and posterior deep masseter, and superficial masseter).Moreover, marked differences were found in the percentage distributions of Pbc and Pc of different primary fasciculi in each part of the masseter.In general, the average Pbc and Pc values were highest in the deepest masseter, intermediate in the superficial masseter, and lowest in the deep masseter in the origin and belly portions.In aging rats the three kinds of muscle fibers were easier to distinguish and differences in the average Pbc and Pc values in different muscle parts were greater.Moreover, primary fasciculi with high Pbc and Pc values, or those with low Pbc and Pc values were more numerous than in young adult rats.The relation between the fiber types and their function (3,4,5,9,22,23,24,25,29,30) and between the histochemical organization and function of muscle (2,3,4,5,36) have been studied in detail. But in previous studies the average percentage distribution of muscle fibers were examined in cross sections of only the central portions (belly) of muscle (13,15,17,19,20,28,31,33,34), and differences in histochemical profiles in cross sections of various portions from the origin to the point of insertion of the muscle, in different parts or regions, and in different primary fasciculi in each region were not examined.…”

mentioning

confidence: 99%

“…The relation between the fiber types and their function (3,4,5,9,22,23,24,25,29,30) and between the histochemical organization and function of muscle (2,3,4,5,36) have been studied in detail. But in previous studies the average percentage distribution of muscle fibers were examined in cross sections of only the central portions (belly) of muscle (13,15,17,19,20,28,31,33,34), and differences in histochemical profiles in cross sections of various portions from the origin to the point of insertion of the muscle, in different parts or regions, and in different primary fasciculi in each region were not examined.…”

mentioning

confidence: 99%

Histochemical studies on the architecture of rat masseter muscle.

Katsura

Ishizuka

Matsumoto

et al. 1982

Acta Histochem. Cytochem.

View full text Add to dashboard Cite

The histochemical organization observed in cross sections of rat masseter muscle was investigated by staining for succinic dehydrogenase. Most primary fasciculi were composed of three muscle fiber types: type A, B and C classified by Stein and Padykula (29). Significant differences in the percentage of type B plus type C fibers (Pbc) and the percentage of type C fibers (Pc) were found in different regions (origin, belly, and insertion), and in different parts (the deepest masseter, anterior deep and posterior deep masseter, and superficial masseter).Moreover, marked differences were found in the percentage distributions of Pbc and Pc of different primary fasciculi in each part of the masseter.In general, the average Pbc and Pc values were highest in the deepest masseter, intermediate in the superficial masseter, and lowest in the deep masseter in the origin and belly portions.In aging rats the three kinds of muscle fibers were easier to distinguish and differences in the average Pbc and Pc values in different muscle parts were greater.Moreover, primary fasciculi with high Pbc and Pc values, or those with low Pbc and Pc values were more numerous than in young adult rats.The relation between the fiber types and their function (3,4,5,9,22,23,24,25,29,30) and between the histochemical organization and function of muscle (2,3,4,5,36) have been studied in detail. But in previous studies the average percentage distribution of muscle fibers were examined in cross sections of only the central portions (belly) of muscle (13,15,17,19,20,28,31,33,34), and differences in histochemical profiles in cross sections of various portions from the origin to the point of insertion of the muscle, in different parts or regions, and in different primary fasciculi in each region were not examined. It is important to clarify the histochemical organization of muscle to understand the anatomical function of the muscle and its mechanism of morphogenesis. In the present work we studied the histochemical organization of rat masseter muscle by staining for succinic dehydrogenase activity (SDH) which serves as a marker enzyme of mitochondrial aerobic substrate end-oxidation.

show abstract

“…Muscle fibre type of a muscle does not only determine the repetition speed and amount, but also provides information regarding other properties and functions of the muscle. High type I fibre content has been reported to relate to high muscle spindle ratio (Botterman et al, 1978;Meyers and Hermanson 2006). Thus, mm.…”

Section: Practical Muscle Trainingmentioning

confidence: 98%

Muscular and neuromotor control and learning in the athletic horse

McGowan

Hyytiäinen

2017

CEP

View full text Add to dashboard Cite

Athletic performance or the kinematics of locomotion is ultimately the result of the actions of muscles. Muscular actions differ depending on the muscle group involved with anatomical and functional properties depending on the primary roles of the muscle; from stabilisation to powering locomotion. The functional (contractile and metabolic) properties of a muscle are determined by its fibre type or relative fibre type proportions in the muscle. The actions of muscle require the coordination of the nervous system with muscle contraction to produce movement or resist movement to avoid unwanted motion and tissue damage. The coordination of muscular action with the nervous system is termed neuromotor control and it requires precise proprioceptive input from the periphery, processing and input from the central nervous system (including learned or trained movements) and involves timing of muscle recruitment as well as muscle contraction. Training of muscles involves training for strength (or force generation) and stamina with measureable physiological changes with training including increased fibre size, alterations in fibre type, alterations in glycogen concentrations and lactate transport and alterations in mitochondrial and capillary density. As well as standard athletic training, skills training can make the difference in athletic performance and injury prevention in the equine athlete. This involves training of neuromotor control; training motor skills by motor relearning and conditional learning. Practical specific training techniques can be used in injury prevention, rehabilitation post injury and maintenance of the athlete. In this review we will focus on the thoracolumbar and hindlimb areas of the horse and review the importance of muscular control of locomotion, neuromotor control, the physiological effects of training and practical ways to maximise performance potential by specific physiotherapy skills training.

show abstract

Functional Anatomy of the Association Between Motor Units and Muscle Receptors

Cited by 225 publications

References 36 publications

Localization of monosynaptic Ia excitatory post‐synaptic potentials in the motor nucleus of the cat biceps femoris muscle.

Localization of monosynaptic Ia excitatory post‐synaptic potentials in the motor nucleus of the cat biceps femoris muscle.

Histochemical studies on the architecture of rat masseter muscle.

Muscular and neuromotor control and learning in the athletic horse

Contact Info

Product

Resources

About