‘Each nerve fibre is a charged system’, according to Young; frequency-modulated messages propogate along it, by a ‘conduction without decrement’, as electrochemical impulses. ‘Differences of quality, such as different tones or visual contours, are encoded in the nervous system by having a different nerve cell and nerve fibre for each quality’, so that the brain is a ‘multichannel system’, a parallel processor — in that respect at least.1 The impulses animating this differential code are not individually meaningful to the mind; they must be combined, as the constituent actions of perception and cognition, to become so, just as letters must combine to become meaningful as words and words must combine to become meaningful as sentences.
KeywordsKnowledge Source Constituent Action Message Center Informational Pattern Multichannel System
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