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Abstract:
Motivated by the findings of modular structure in the cortex,
we study a multi-modular model of associative memory that
successfully stores memory patterns with different levels of
activity. We differentiate between two types of synaptic
efficacies, intra-modular and inter-modular ones. The latter
signals undergo an additional nonlinear processing before reaching
the soma. Compared with the conventional, single-module associative
memory network, this multi-modular network has two main advantages:
it is less susceptible to damage to columnar input, and its
response is more consistent with the cognitive data pertaining to
category specific impairments.
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