Faculty Opinions recommendation of Spinal stretch reflexes support efficient hand control.

Author(s):  
Stephen Scott
2019 ◽  
Vol 22 (4) ◽  
pp. 529-533 ◽  
Author(s):  
Jeffrey Weiler ◽  
Paul L. Gribble ◽  
J. Andrew Pruszynski

2021 ◽  
Vol 125 (4) ◽  
pp. 1339-1347
Author(s):  
Jeffrey Weiler ◽  
Paul L. Gribble ◽  
J. Andrew Pruszynski

We have previously shown that spinal circuits can rapidly generate reflex responses that efficiently engage multiple joints to support postural hand control of the upper limb. Here, we show that spinal circuits can also rapidly generate such efficient responses during reaching actions.


2017 ◽  
Vol 42 (9) ◽  
pp. S8-S9 ◽  
Author(s):  
Jonathan Cheng ◽  
Stephen Helms Tillery ◽  
John Miguelez ◽  
John Lachapelle ◽  
Edward Keefer
Keyword(s):  

Motor Control ◽  
2015 ◽  
Vol 19 (4) ◽  
pp. 253-270 ◽  
Author(s):  
Asger Roer Pedersen ◽  
Peter William Stubbs ◽  
Jørgen Feldbæk Nielsen

The aim was to investigate trial-by-trial response characteristics in the short-latency stretch reflex (SSR). Fourteen dorsiflexion stretches were applied to the ankle joint with a precontracted soleus muscle on 2 days. The magnitude and variability of trial-by-trial responses of the SSR were assessed. The SSR was log-normally distributed and variance heterogeneous between subjects. For some subjects, the magnitude and variance differed between days and stretches. As velocity increased, variance heterogeneity tended to decrease and response magnitude increased. The current study demonstrates the need to assess trial-by-trial response characteristics and not averaged curves. Moreover, it provides an analysis of SSR characteristics accounting for log-normally distributed and variance heterogeneous trial-by-trial responses.


2011 ◽  
Vol 26 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Mario Tombini ◽  
Jacopo Rigosa ◽  
Filippo Zappasodi ◽  
Camillo Porcaro ◽  
Luca Citi ◽  
...  

2015 ◽  
Vol 22 (6) ◽  
pp. 653-657 ◽  
Author(s):  
Lee Sandquist ◽  
Alexander Paris ◽  
Daniel K. Fahim

Complete dislocation at the thoracolumbar junction is a rare occurrence, with only 4 previously reported cases in 3 separate series. Surgical procedures in the reported cases of spondyloptosis at the thoracolumbar junction have been described using instrumentation, reduction, decompression, and stabilization techniques. In this report the authors' patient presented with spondyloptosis at the thoracolumbar junction, resulting in a T-11 American Spinal Injury Association Grade A injury. The authors corrected the patient's thoracolumbar spondyloptosis with surgical reconstruction without the use of leveraged instrumented reduction. They describe a single-stage, posterior-only spinal realignment, reconstruction, and stabilization. Within months of beginning postoperative therapy, the patient enrolled and attended courses at a local college and regained personal independence by learning to drive a motor vehicle with a hand control. Two-year radiographic and clinical follow-up confirms solid fusion across the reconstruction.


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