Fig. 15.
(A and B) The time courses of the weights of the AHRM units tuned to the target spatial frequency (A) and to an irrelevant spatial frequency (B) for Group III (pre-training in zero external noise). (C–E) Snapshots of the AHRM weights in all the 35 channels after pre-training in zero external noise (C), after 2 days of training in eight levels of external noise (D), and in the end of the experiment (E).