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There are two key sources of information that can be used to match forces-the centrally generated sense of effort and afferent signals from mechanical receptors located in peripheral tissues. There is currently no consensus on which source of information is more important for matching forces. The corollary discharge hypothesis argues that subjects match forces using the centrally generated sense of effort. The purpose of this study was to investigate force matching at the shoulder before and after a suprascapular nerve block. The nerve block creates a sensory and muscle force mismatch between sides when matching loads. The torque matching accuracy did not change after the nerve block was administered. Directionally, the torque error was in the direction proposed by the corollary discharge hypothesis. However, the mismatch between deltoid EMG was substantially greater compared to the changes in the torque matching error after the block. The results support that sensory information is used during force matching tasks. However, since the nerve block also created a sensory disruption between sides, it is not clear how sensory information is reweighted following the nerve block and a role for sense of effort is still implicated.
This article was published in the following journal.
Name: Experimental brain research
To investigate the effect and superiority of fluoroscopy-guided intraarticular shoulder injection (IAI), suprascapular nerve block (SSNB), and combination treatment in hemiplegic shoulder pain (HSP).
It has been estimated that 20% of the general population will suffer shoulder pain throughout their lives, with a prevalence that can reach up to 50%. The suprascapular nerve (SSN) provides sensation ...
We recently showed that the novel combination of a superficial cervical plexus block, a suprascapular nerve block, and the lateral sagittal infraclavicular brachial plexus block (LSIB) provides an alt...
The aim of this study was to evaluate the efficacy of ultrasound-guided suprascapular block treatment in patients with painful hemiplegic shoulder whose pain was not reduced after conservative treatme...
The aim of the study was to describe the radiological anatomy of the -a structure localized at the floor of the supraspinatus fossa, just below the true suprascapular notch. In sonographic examination...
Despite their reliability and efficacy for shoulder surgery analgesia, above clavicle brachial plexus blocks are related with phrenic nerve palsy and diaphragm paralysis that may not be to...
This study was conducted to compare the efficacy of hydrodilatation with hyaluronic acid under ultrasonographic guidance plus physical therapy (PT) with that of PT alone for treating adhes...
The purpose of this randomized study is to examine the effect of a selective suprascapular nerve block on post operative pain after arthroscopic shoulder surgery. Half of the subjects will...
The purpose of this study is to determine whether the combination of suprascapular and axillary nerve blocks is non-inferior to the conventional interscalene block (ISB) in providing pain ...
The combination of a modified lateral sagittal infraclavicular block and a suprascapular nerve block has not been studied in a cohort of total arthroplasty patients. Such diaphragm-sparing...
Interruption of sympathetic pathways, by local injection of an anesthetic agent, at any of four levels: peripheral nerve block, sympathetic ganglion block, extradural block, and subarachnoid block.
Unilateral or bilateral pain of the shoulder. It is often caused by physical activities such as work or sports participation, but may also be pathologic in origin.
A blocking of NEURAL CONDUCTION in the network of nerve fibers innervating the neck and shoulder.
Benign and malignant neoplasms that arise from the optic nerve or its sheath. OPTIC NERVE GLIOMA is the most common histologic type. Optic nerve neoplasms tend to cause unilateral visual loss and an afferent pupillary defect and may spread via neural pathways to the brain.
Mechanical compression of nerves or nerve roots from internal or external causes. These may result in a conduction block to nerve impulses (due to MYELIN SHEATH dysfunction) or axonal loss. The nerve and nerve sheath injuries may be caused by ISCHEMIA; INFLAMMATION; or a direct mechanical effect.
A joint is where two or more bones come together, like the knee, hip, elbow, or shoulder. Joints can be damaged by many types of injuries or diseases, including Arthritis - inflammation of a joint causes pain, stiffness, and swelling with ...
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...