COMMENTS: Internet porn is different from porn of the past due to it’s endless novelty of scenes and genre. Novelty, as this study states, is it’s own reward as it causes spurts of dopamine. It’s more precise to say that dopamine is activated by seeking and novelty which causes cravings.
Knutson B, Cooper JC. Neuron. 2006 Aug 3;51(3):280-2. Comment on: •Neuron. 2006 Aug 3;51(3):369-79. PMID: 16880131. Department of Psychology, Stanford University.
Using event-related fMRI, Bunzeck and Düzel show that midbrain regions putatively housing dopamine cell bodies activate more for novel pictures than for negative pictures, pictures requiring a motor response, or repeated pictures.
These findings indicate that midbrain regions preferentially respond to novelty and suggest that novelty can serve as its own reward.