Locomotion of Forelimbs in Thalamic Cats: Joint Afferents and Supraspinal Contributions

Author(s):  
Muneo Shimamura ◽  
I. Kogure ◽  
T. Fuwi
Keyword(s):  
1977 ◽  
Vol 40 (1) ◽  
pp. 1-8 ◽  
Author(s):  
P. Grigg ◽  
B. J. Greenspan

1. One hundred thirty-eight knee joint afferents from posterior articular nerve (PAN), in primates, were recorded in dorsal root filaments. Responses of afferents were studied in relation to both passive manipulations of the knee and active contractions of quadriceps, semimembranosus, and gastrocnemius muscles. 2. When the knee was passively rotated, most neurons discharged only when extreme angular displacements were achieved. Response of neurons responding to passive extensions was linearly related to the torque applied to the knee. With maintained extensions, discharge in extension neurons adapted slowly. Some of the time constants of adaptation were similar to those for simultaneously recorded torque relaxation. 3. Contractions of quadriceps, semimembranosus, or gastrocnemius muscles could activate many neurons in the absence of changes in joint angle. For quadriceps-activated neurons, rather high torques (mean = 2,450 g with cm) were required. 4. The results support the hypothesis that joint afferents function as capsullar stretch receptors, responding to those mechanical events which result in loading of the capsule.


1996 ◽  
Vol 10 (02) ◽  
pp. 27-31 ◽  
Author(s):  
K. J. Cole ◽  
B. J. Daley ◽  
R. A. Brand
Keyword(s):  

1990 ◽  
Vol 15 (1) ◽  
pp. 14-24
Author(s):  
A. LEE DELLON

Erik Moberg is the father of functional sensory testing. During the past three decades, his research into quantitative testing of hand sensibility has provided the insight to bring us from classic academic tests (permitting localisation of lesions within the central nervous system) to clinical capability of restoring sensation to the hand. He introduced the Ninhydrin test to document objectively innervation. He defined hand function as precision-sensory and gross-sensory grips. He correlated Weber two-point discrimination with hand function. He introduced the pick-up test to document hand function. He coined the term “tactile gnosis”. He hypothesised that proprioception is principally due to skin, not joint, afferents. He classified the tetraplegic hand according to its combined sensory and motor capacity. He set the standard for sensory recovery after primary nerve repair, relating recovered two-point discrimination to age (Önne’s line) and he inspired the present generation of researchers to quantify their own studies of sensation.


2015 ◽  
Vol 604 ◽  
pp. 193-198 ◽  
Author(s):  
Jeffrey V. Kras ◽  
Christine L. Weisshaar ◽  
Parul S. Pall ◽  
Beth A. Winkelstein
Keyword(s):  

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