So how does the brain function as a system?
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There is a hierarchy in the manner in which the sensory system is organized and it starts with the association cortex, which has the most complicated analyses, and then flows down in the order of complexity to the secondary sensory cortex, primary sensory cortex, thalamic relay nuclei, and the receptors (2006).
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The primary sensory cortex receives information from the thalamic relay nuclei, the secondary sensory cortex receives information from the primary sensory cortex, and the association cortex receives information primarily from the secondary sensory cortex.
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However, these systems are not mutually exclusive of each other; rather the current model of the sensorimotor system is not just a hierarchical model, it also is functionally segregated and communicates parallel as well.
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However, these systems are not mutually exclusive of each other; rather the current model of the sensorimotor system is not just a hierarchical model, it also is functionally segregated and communicates parallel as well.
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How simple is that!!! Or in another language:
The manner in which this can be compared, is to a large business where you will always have an executive team at the top (association cortex) which requires feedback prior to making important decisions from department heads (secondary sensory cortex). However, departments should not function alone in silos even though they do have areas of specialization.
Rather, for a business (or brain) to be successful the department heads must effectively communicate between each other as well as receiving clear information from their direct reports (primary sensory cortex) who must communicate amongst themselves as well.
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In addition, this sensorimotor “corporation” must not halt the flow of information by creating unnecessary bureaucracy so if the thalamus has important information that should go directly to the department heads it may do so without any problem.
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Just thought you might want to know!
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