Information Processing with Dynamic Synapses

Abstract

As we had seen from the histograms for the ISI between two neurons (Figures 2.9 - 2.10, chapter 2) a net with constant synapses is unable to remain active in a particular subset of partitions only. Instead the net is carried by all partitions, this being the reason for the absence of patterns when operating in the cold range. Furthermore, it can recognise and differentiate, resp., spatial patterns only in a limited way because the permutation of input images can neither be separated by pulse rate nor entropy with restricted net size. Moreover, pulse patterns at the input side can never be mapped on to pulse patterns at the output side as long as the net operates coldly. On the other hand, hot nets are excluded because such nets hardly react to input signals.