title: On a possible neural mechanism underlying a finding by Evarts and Fromm.
abstract: A finding by Evarts and Fromm [1] that the number of unit firings in certain pyramidal-tract neurons is very large for very small, but precise, movements suggests that the mathematical Law of Large Numbers may be operating here. According to this law, under suitable conditions the average of a large number of variables is very precisely defined--its deviation from its ideal value being less the larger the number of variables. Such an algorithm operating in the nervous system might generate precision of muscle control from the frequency of firing of neutrons belonging to a certain neuron system.
mesh_terms: D008959:Models, Neurological; D009048:Motor Skills / Q000502:physiology*; D011712:Pyramidal Tracts / Q000502:physiology*; D013223:Statistics as Topic