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Motor learning is also accomplished on the musculoskeletal level. Each motor neuron in the body innervates one or more muscle cells, and together these cells form what is known as a motor unit. For a person to perform even the simplest motor task, the activity of thousands of these motor units must be coordinated.
In motor behaviors, this can be seen in an infant’s tonic neck reflex, where babies prefer to lie with their heads turned to one side and extend their arm to the same side which the head is turned while flexing the other arm behind their head. It is a reflex where the infant directs vision towards the hand or fist in extension.
Other authors suggest a new notion of the phylogenetic and ontogenetic origin of action understanding that utilizes the motor system; the motor cognition hypothesis. This states that motor cognition provides both human and nonhuman primates with a direct, prereflexive understanding of biological actions that match their own action catalog. [5]
The gradient of motor unit force is correlated with a gradient in motor neuron soma size and motor neuron electrical excitability. This relationship was described by Elwood Henneman and is known as Henneman's size principle , a fundamental discovery of neuroscience and an organizing principle of motor control.
A woman exercising. In physiology, motor coordination is the orchestrated movement of multiple body parts as required to accomplish intended actions, like walking.This coordination is achieved by adjusting kinematic and kinetic parameters associated with each body part involved in the intended movement.
A recent issue in motor memory is whether or not it consolidates in a manner similar to declarative memory, a process that involves an initial fragile learning period that eventually becomes stable and less susceptible to damage over time. [1] An example of stable motor memory consolidation in a patient with brain damage is the case of Clive ...
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Central pattern generators (CPGs) are self-organizing biological neural circuits [1] [2] that produce rhythmic outputs in the absence of rhythmic input. [3] [4] [5] They are the source of the tightly-coupled patterns of neural activity that drive rhythmic and stereotyped motor behaviors like walking, swimming, breathing, or chewing.