Piero Scaruffi(Copyright © 2013 Piero Scaruffi | Legal restrictions )
These are excerpts and elaborations from my book "The Nature of Consciousness"
Perception And Sensation
A sensory input undergoes a long series of transformations before leading to a "sensation". Its features are extracted as it is channeled through the brain. Information about its location is isolated early in this process and kept separate from the features. Different regions of cells in the cortex process different features. As the sensory information travels through these regions, each region extracts some feature.
For example, one of the most complex sensory inputs is the one that comes from the retina. The component about the location is isolated and routed elsewhere, while information about the sensory input (e.g., the texture, size, color, shape of an image) is still traveling together in one chunk (this produces, for example, the sensation and emotion of the whole image). The location component follows, instead, a completely different path. "What" and "where" are processed separately and in parallel.
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