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A muscle synergy is composed of agonist and synergistic muscles. An agonist muscle is a muscle that contracts individually, and it can cause a cascade of motion in neighboring muscles. Synergistic muscles aid the agonist muscles in motor control tasks, but they act against excess motion that the agonists may create.
It can also be used in animal recordings. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified nerve, a ...
Conduction velocity is derived by measuring the limb length, D, in millimeters from the stimulation site to the corresponding spinal segment (C7 spinous process to wrist crease for median nerve). This is multiplied by two as it goes to the cord and returns to the muscle (2D). 2D is divided by the latency difference between mean F and M and 1 ...
The effects of neural activity and muscle contraction are highly non-linear, which the nervous system must account for when predicting the consequences of a pattern of motor neuron activity. Much ongoing research is dedicated to investigating how the nervous system deals with these issues, both at the behavioral level, as well as how neural ...
The theory behind the new spinal cord stimulator is that in certain cases of spinal cord injury the spinal nerves between the brain and the legs are still alive, but just dormant. [48] On 1 November 2018 a third distinct research team from the University of Lausanne published similar results with a similar stimulation technique in the journal ...
Neuron connections in the motor map are linked for the purpose of generating specific movements. These connections are not linked for the purpose of generating specific muscles movements or contractions. [6] Spike-triggered averaging is a way to measure the activity of one cortical motor neuron, on a group of lower motor neurons in the spinal ...
Neural oscillations are commonly studied within a mathematical framework and belong to the field of neurodynamics, an area of research in the cognitive sciences that places a strong focus on the dynamic character of neural activity in describing brain function. [22]
Henneman's and colleagues took advantage of the differences between the soleus and gastrocnemius muscles to show that the neurons innervating the soleus muscle: produce smaller electrical signals when measuring electrical activity of ventral roots, which they knew reflected the diameter of the motor neuron;