I have a question made of four aspects on addiction and dopamine neurobiology.
1. I'm currently wondering whether the addictive potential of social media can be quantified. I'm aware it probably depends on the individual, but I would think an estimate is possible; for example, hardcore drugs may be more objectively more addictive than a sugary snack.
2. I'm also wondering if I'm correct in assuming that, in addiction, the diminution of dopamine receptors would render all activities (aside the addiction itself) less pleasurable. Is this the case?
3. Finally, I'm wondering if the availability of more receptors of dopamine would permit sustained release of this neurotransmitter over time. I.e. several short amounts of dopamine from natural sources would be more 'optimal' than a massive burst at one given time?
4. Finally, I'm wondering if I'm completely off track given Berridge's 'wanting' versus 'liking' distinction, where dopamine mediates wanting and opioids mediate liking. Would pleasure here occur from opioids rather than dopamine?