A nerve in a mammal is optogenetically transduced, wherein the nerve is susceptible to stimulus by selective application of transdermal light, and a light source is applied to dermis of the mammal at or proximate to the optogenetically transduced nerve, to thereby stimulate the nerve. A wearable device for optogenetic motor control and sensation restoration of a mammal includes a wearable support, a power source at the wearable support, a controller at the wearable support and in electrical communication with a power source, and a transdermal light source coupled to the controller.
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