S-EMG of Forearm Muscles Activity in Conventional PC Mouse Use

2017 ◽  
pp. 439-447 ◽  
Author(s):  
Miguel L. Lourenço ◽  
Denis A. Coelho
Keyword(s):  
Forearm Muscles

Different patterns of excitation and inhibition of the small hand and forearm muscles from magnetic brain stimulation in humans

2002 ◽  
Vol 113 (8) ◽  
pp. 1286-1294 ◽  
Author(s):  
Lin Wu ◽  
Yoshinobu Goto ◽  
Takayuki Taniwaki ◽  
Naoko Kinukawa ◽  
Shozo Tobimatsu
Keyword(s):  
Brain Stimulation ◽  
Forearm Muscles ◽  
Magnetic Brain Stimulation ◽  
Small Hand

scholarly journals Fusimotor reflexes in relaxed forearm muscles produced by cutaneous afferents from the human hand.

1994 ◽  
Vol 479 (3) ◽  
pp. 499-508 ◽  
Author(s):  
S C Gandevia ◽  
L Wilson ◽  
P J Cordo ◽  
D Burke
Keyword(s):  
Cutaneous Afferents ◽  
Human Hand ◽  
Forearm Muscles

Plasticity in the Distribution of the Red Nucleus Output to Forearm Muscles After Unilateral Lesions of the Pyramidal Tract

2000 ◽  
Vol 83 (5) ◽  
pp. 3147-3153 ◽  
Author(s):  
Abderraouf Belhaj-Saïf ◽  
Paul D. Cheney
Keyword(s):  
Pyramidal Tract ◽  
Red Nucleus ◽  
Emg Activity ◽  
Motor Impairments ◽  
Forearm Muscles ◽  
Extensor Muscles ◽  
Flexor Muscles ◽  
Lesion Method ◽  
Stimulus Triggered Averaging ◽  
Suppression Effects

It has been hypothesized that the magnocellular red nucleus (RNm) contributes to compensation for motor impairments associated with lesions of the pyramidal tract. To test this hypothesis, we used stimulus triggered averaging (StTA) of electromyographic (EMG) activity to characterize changes in motor output from the red nucleus after lesions of the pyramidal tract. Three monkeys were trained to perform a reach and prehension task. EMG activity was recorded from 11 forearm muscles including one elbow, five wrist, and five digit muscles. Microstimulation (20 μA at 20 Hz) was delivered throughout the movement task to compute StTAs. Two monkeys served as controls. In a third monkey, 65% of the left pyramidal tract had been destroyed by an electrolytic lesion method five years before recording. The results demonstrate a clear pattern of postlesion reorganization in red nucleus–mediated output effects on forearm muscles. The normally prominent extensor preference in excitatory output from the RNm (92% in extensors) was greatly diminished in the lesioned monkey (59%). Similarly, suppression effects, which are normally much more prominent in flexor than in extensor muscles (90% in flexors), were also more evenly distributed after recovery from pyramidal tract lesions. Because of the limited excitatory output from the RNm to flexor muscles that normally exists, loss of corticospinal output would leave control of flexors particularly weak. The changes in RNm organization reported in this study would help restore function to flexor muscles. These results support the hypothesis that the RNm is capable of reorganization that contributes to the recovery of forelimb motor function after pyramidal tract lesions.

scholarly journals Task-dependent modulation of 15-30 Hz coherence between rectified EMGs from human hand and forearm muscles

1999 ◽  
Vol 516 (2) ◽  
pp. 559-570 ◽  
Author(s):  
J. M. Kilner ◽  
S. N. Baker ◽  
S. Salenius ◽  
V. Jousmäki ◽  
R. Hari ◽  
...  
Keyword(s):  
Human Hand ◽  
Forearm Muscles

Intrinsic Muscle Strain in the Instrumentalist

2005 ◽  
Vol 20 (2) ◽  
pp. 66-69
Author(s):  
William J Dawson
Keyword(s):  
Risk Factors ◽  
Health Care Providers ◽  
Musical Instruments ◽  
Care Providers ◽  
Muscle Strain ◽  
Intrinsic Muscle ◽  
Forearm Muscles ◽  
Stringed Instruments ◽  
Hand Involvement ◽  
Intrinsic Muscles

The playing of many musical instruments is performed principally by the small intrinsic muscles of the hands. Practice records were reviewed to investigate the epidemiology, etiology, and risk factors for intrinsic muscle strain. Fifty-one instrumentalists were found, out of 129 having strains of all hand and forearm muscles. These 51 comprised 15.5% of all 329 musicians seen for overuse-related conditions. The patient ages ranged from 10 to 72 years; 20 were male. Forty-one of the 51 played keyboard or stringed instruments; 11 of the 19 stringed instruments were bowed. Twenty-one patients were professionals or university/conservatory music students. Sixty percent of strains were caused by playing music, with slightly more than half being in the professional/collegiate cohort. Pianists were more likely to experience right hand involvement. Seven patients had bilateral intrinsic strains. Thirteen experienced concomitant strains of the extrinsic forearm muscles, either on the same side or bilaterally with bilateral intrinsic strains. Treatment followed standard principles, with hand rest prescribed in 12, musical practice changes in 19, activity modification in 30, and formal exercises/hand therapy in 23. Nonsteroidal medication was prescribed in 17 cases. The data suggest that intrinsic muscle strains related to overuse follow the same etiologic and anatomic patterns as other upper extremity muscle strain and pain syndromes and have the same risk factors. Health care providers should be aware of the role of the hand intrinsic muscles in playing musical instruments and their propensity for overuse-related strain syndromes from both musical and nonmusical activities.

Real-Time Classification of Hand Motions Using Ultrasound Imaging of Forearm Muscles

2016 ◽  
Vol 63 (8) ◽  
pp. 1687-1698 ◽  
Author(s):  
Nima Akhlaghi ◽  
Clayton A. Baker ◽  
Mohamed Lahlou ◽  
Hozaifah Zafar ◽  
Karthik G. Murthy ◽  
...  
Keyword(s):  
Real Time ◽  
Ultrasound Imaging ◽  
Forearm Muscles ◽  
Real Time Classification

scholarly journals Rhabdomyolysis and Acute Renal Failure after Gardening

2015 ◽  
Vol 2015 ◽  
pp. 1-3 ◽  
Author(s):  
Zeljko Vucicevic
Keyword(s):  
Renal Failure ◽  
Acute Renal Failure ◽  
Compartment Syndrome ◽  
Psychiatric Patient ◽  
Energy Supply ◽  
Physical Work ◽  
Exertional Rhabdomyolysis ◽  
Forearm Muscles

Acute nontraumatic exertional rhabdomyolysis may arise when the energy supply to muscle is insufficient to meet demands, particularly in physically untrained individuals. We report on a psychiatric patient who developed large bruises and hemorrhagic blisters on both hands and arms, rhabdomyolysis of both forearm muscles with a moderate compartment syndrome, and consecutive acute renal failure following excessive work in the garden. Although specifically asked, the patient denied any hard physical work or gardening, and heteroanamnestic data were not available. The diagnosis of rhabdomyolysis was easy to establish, but until reliable anamnestic data were obtained, the etiology remained uncertain. Four days after arrival, the patient recalled working hard in the garden. The etiology of rhabdomyolysis was finally reached, and the importance of anamnestic data was once more confirmed.

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