Three forms of binding and their neural substrates: alternatives to temporal synchrony
This chapter presents three different ways of addressing the binding problem in different brain areas: generic neocortex, hippocampus, and prefrontal cortex. None of these approaches involve the popular mechanism of temporal synchrony. The first two involve conjunctive representations that bind by insuring that different neural units are activated for different combinations of input features. The chapter presents a model that learns these representations in a challenging relational binding task, and furthermore is capable of considerable generalization to novel inputs. Next, this chapter reviews the idea that the hippocampus performs conjunctive binding in long-term memory through the use of higher-order conjunctions that are much more specific to particular events than those in the cortex.
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