20. The apparatus of claim 12 , wherein the at least one processor configured to provide supervisory bias signals is configured to: provide positive supervisory signals below a firing threshold to create a bias for firing on a desired output layer neuron.
20. The apparatus of claim 12 , wherein the at least one processor configured to provide supervisory bias signals is configured to: provide positive supervisory signals below a firing threshold to create a bias for firing on a desired output layer neuron. 21. The apparatus of claim 20 , wherein the at least one processor configured to provide supervisory bias signals is further configured to: provide negative supervisory signals to create a bias for preventing firing on an non-desired output layer neuron.