Proprioception: Roles of Muscle Receptors

2012 ◽  
Keyword(s):  
Muscle Receptors

Coxal Muscle Receptors in the Crab: The Receptor Potentials of S and T Fibres in Response to Ramp Stretches

1971 ◽  
Vol 55 (3) ◽  
pp. 813-832
Author(s):  
B. M. H. BUSH ◽  
ALAN ROBERTS
Keyword(s):  
Motor Nerve ◽  
Large Diameter ◽  
Muscle Fibres ◽  
Dynamic Component ◽  
Static Responses ◽  
Basal Joint ◽  
Muscle Receptors ◽  
Shore Crabs ◽  
Static Nature ◽  
Receptor Muscle

1. Intracellular and extracellular recordings from the two large-diameter S and T sensory fibres of the posterior thoracico-coxal muscle receptor in shore crabs confirm the graded, dynamic-static nature of the receptor potentials evoked by stretching the receptor muscle, and the lack of afferent impulses. 2. Slow ramp-function stretches evoke receptor potentials with characteristic shapes, which differ between the two fibres in several respects: (i) The dynamic component in the S fibre resembles an algebraic sum of length and velocity responses and a variable initial ‘acceleration’ (?) transient, while in the T fibre it commonly declines (‘adapts’) during stretching, especially at greater velocities and starting lengths. (ii) On release of stretch the S fibre usually exhibits a ‘negative velocity response’, but the T fibre repolarizes rapidly often with a slight hyperpolarization. (iii) The dynamic response of the T fibre is generally greater than that of the S fibre, and increases more steeply and approximately logarithmically with stretch velocity over a 10- to 50-fold range. (iv) The ‘static response’ or degree of depolarization increases fairly linearly with receptor length in the S fibre but very non-linearly in the T fibre. (v) The T fibre displays pronounced hysteresis in its dynamic and static responses at increasing and decreasing lengths, but the S fibre shows little hysteresis. (vi) The T fibre but not the S fibre commonly shows small rapid oscillations or ‘noise’ superimposed upon strongly depolarized ‘static’ potentials. (vii) The S and T responses may be affected reciprocally by some forms of receptor muscle contraction. 3. Graded receptor potentials evoked in the ‘D’ fibre by stretching the non-muscular depressor-receptor strand of the coxo-basal joint show little hysteresis. 4. Receptor muscle fibres respond to motor nerve stimulation or spontaneous motor impulses from the thoracic ganglion with slow, facilitating and summating excitatory junctional potentials. 5. The mechanisms underlying the differences between S and T responses, and their functional significance to the animal, are discussed, and comparisons are drawn with other muscle receptors.

The Morphology of Muscle Receptors

1974 ◽  
pp. 1-190 ◽  
Author(s):  
David Barker
Keyword(s):  
Muscle Receptors

Effect of acetylcholine on normal and denervated muscle receptors

1969 ◽  
Vol 68 (6) ◽  
pp. 1334-1336
Author(s):  
R. S. Arutyunyan
Keyword(s):  
Denervated Muscle ◽  
Muscle Receptors

A Lepidopteran Saline: Effects of Inorganic Cation Concentrations on Sensory, Reflex and Motor Responses in a Herbivorous Insect

1966 ◽  
Vol 44 (1) ◽  
pp. 163-175 ◽  
Author(s):  
R. DE G. WEEVERS
Keyword(s):  
Divalent Cations ◽  
Herbivorous Insect ◽  
Muscle Action ◽  
Photometric Analysis ◽  
Action Current ◽  
Inorganic Cation ◽  
Muscle Action Potential ◽  
Muscle Receptors ◽  
Synthetic Media

1. The inorganic cations in the haemolymph of Antheræa pernyi larvae and pupae were analysed by flame photometry. 2. Synthetic media based on these analyses were compared with haemolymph in their effects on the muscle action potential and on the response of the dorsal muscle receptors to a standard stretch. 3. The best match with haemolymph was obtained in all cases with concentrations of divalent cations considerably below the values found by flame photometric analysis. Binding to haemolymph proteins is probably not the major factor responsible for lowering the ionic activities of calcium and magnesium. 4. The role of magnesium in neuromuscular transmission is discussed. It is concluded that in phytophagous Lepidoptera this ion may carry a proportion of the muscle action current.

How do Crabs Control their Muscle Receptors?

1985 ◽  
pp. 145-166 ◽  
Author(s):  
B. M. H. Bush ◽  
A. J. Cannone
Keyword(s):  
Muscle Receptors

INFLUENCE OF MUSCLE RECEPTORS ON NEURONS OF THE SUPRAOPTIC NUCLEUS

1981 ◽  
pp. 335-340 ◽  
Author(s):  
H. Yamashita ◽  
H. Kannan ◽  
K. Inenaga ◽  
K. Koizumi
Keyword(s):  
Supraoptic Nucleus ◽  
Muscle Receptors

The Activity of Muscle Receptors in the Kitten

1960 ◽  
Vol 50 (3-4) ◽  
pp. 203-221 ◽  
Author(s):  
Sten Skoglund
Keyword(s):  
Muscle Receptors

Reinnervation and recovery of cat muscle receptors after long-term denervation

1986 ◽  
Vol 94 (1) ◽  
pp. 184-202 ◽  
Author(s):  
D. Barker ◽  
J.J.A. Scott ◽  
M.J. Stacey
Keyword(s):  
Muscle Receptors
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