Solving The Mystery Of Motion With AI

Source Domain: www.forbes.com

Allison Hamilos explains how hundreds of motor neurons fire in concert to trigger human movement, and scientists are investigating what stimulates these neural “avalanches”.
Hamilos distinguishes between reactive and elective movements, noting that elective movements are harder to analyze due to their unexpected nature. Parkinson’s disease illustrates how impaired movement motivators slow down voluntary movements, whereas reactive movements remain intact.
Research indicates dopamine plays a role in triggering motor neuron activity. However, its effect is probabilistic rather than deterministic, preserving human free will.
Hamilos identifies three key factors in decision-making and movement: choosing which movements to make, selecting from multiple options, and perceiving a stimulus.
The complexity of human motion is much greater than in mice, involving advanced, subconscious processes. Examples include bradyphrenia and perseveration, which can cause a lack of spontaneous thought or action, and Tourette’s, characterized by compulsive, random movements.
Hamilos introduces behavioral stochasticity and a shared dopamine circuit mechanism as unifying ideas to help explain various movement disorders and the spontaneity of action.

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