Revisiting the Model Human Processor: a neurophysiological investigation based on P300 and Bereitschaftspotential

These results suggest the human information processing pathway is not monolithic. We propose a new model that bifurcates after perception into either a "Deliberate Process" (P300-present), which aligns with the MHP, or a high-speed "Automatic Process" (P300-absent) that bypasses the MHP's "Initiate Response" process. This work provides neurophysiological validation for the MHP and lends new neural support for dual-process theory.