The teaching phase can also utilize {HEAD ~ a feed forward gradient decent method} which follows the output computations and that also includes {TAIL ~ the local feedback} and the crosstalk 
includes
The teaching phase can also utilize { HEAD ~ a feed forward gradient decent method } which follows the output computations and that also includes { TAIL ~ the local feedback } and the crosstalk
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH