| |
Abstract:
We have developed a neural network architecture that
implements a theory of attention, learning, and trans-cortical
communication based on adaptive synchronization of 5-15 Hz and
30-80 Hz oscillations between cortical areas. Here we present a
specific higher order cortical model of attentional networks,
rhythmic expectancy, and the interaction of higher-order and
primary cortical levels of processing. It accounts for the
``mismatch negativity'' of the auditory ERP and the results of
psychological experiments of Jones showing that auditory stream
segregation can depend on the rhythmic structure of inputs. The
timing mechanisms of the model allow us to explain how relative
timing information such as the relative order of events between
streams is lost when streams are formed. The model suggests how the
theories of auditory perception and attention of Jones and Bregman
may be reconciled.
|
