The neocortex is just one part of the brain responsible for cognition and intelligence.
Like the composition of the brain, which contains many different structures, it may be necessary to use different types of neural networks to perform specific functions. The neocortex is just one part of the brain responsible for cognition and intelligence. It has massive connections to the thalamus, the hippocampus and the cerebellum, all examples of brain regions important for different cognitive aspects.