A theory of sulcal-gap signalization |
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Authors: | Montare Alberto |
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Institution: | Human Learning Laboratory, William Paterson University, Wayne, NJ 07470, USA. montarea@wpunj.edu |
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Abstract: | Two sulcal-gap signalization systems are hypothesized to have evolved as emergent functional "exaptations" having the capacity to transmit two-way cortex-to-cortex signals across tissues embedded in opposing sulcal banks. Hypothesis 1 posits that a primary sulcal-gap signalization system evolved the capacity to transmit nonlanguage signals within hierarchically lower-order sensory, motor, and perceptual functional areas of the neocortex having elemental functional units consisting of columns of about 110 neurons. Hypothesis 2 posits that a secondary sulcal-gap signalization system evolved the capacity to transmit language signals within hierarchically higher-order cognitive functional areas of the "neo-neocortex" having elemental functional units consisting of modules of about 4,000 neurons. Neuroanatomical, neurophysiological neuroevolutionary, and neurodevelopmental evidence is presented in support of these two sulcal-gap hypotheses. It is speculated that the combined cognitive capacities of these two sulcal-gap signalization systems may contribute to the transduction of physiological brain into psychological mind. |
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