High-speed digital pornography acts as a "supernormal stimulus" that hijacks the brain’s mesolimbic dopamine pathway through hyper-novelty and instant reward.
NEUROLOGICAL MECHANISM
Evolutionary biology designed the brain to reward mating cues with surges of dopamine, reinforcing survival behaviors. Internet pornography delivers endless artificial novelty at a speed and variety the human brain never evolved to process (the Coolidge effect). Over repeated sessions, this causes high dopamine spikes followed by accumulation of the deltaFosB transcription factor in the nucleus accumbens, creating deeply entrenched neurological cravings and conditioned triggers.