Brain Processes and Phenomenal Consciousness

A hypothesis on the physiological conditions for the occurrence of phenomenal states is presented. It is suggested that the presence of phenomenal states depends on the rate at which neural assemblies are formed. Unconsciousness and various disturbances of phenomenal consciousness occur if the assembly formation rate is below a certain threshold level; if this level is surpassed, phenomenal states necessarily result. A critical production rate of neural assemblies is the necessary and sufficient condition for the occurrence of phenomenal states.

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