What Cannabinoids are most active on the CB1 receptor??

[ShaggyFin]

This receptor is related to fear, anxiety, memory and addiction (according to recent studies) and apparently when Cannabis acts on this receptor, it promotes "Neurogenesis".

Neurogenesis is where new brain/neural cells are "birthed", and it can even happen in adults. When these cells are born, it makes new & stronger neural pathways. Which basically translates to stronger brain activity.

I am wondering, what Cannabinoids are best at activating this receptor? I would like to know natural cannabinoids mostly, but if you know a synthetic cannabinoid that does this, that would be helpful as well.

Thank you in advance.

I also just did some reading, and I found that in Israel they have increased success rate with brain trauma patients by 26% (reducing swelling, waking from coma, etc) using a Cannabinoid.
They did a trial across 6 clinics.

They are using 1 specific synthetic cannabinoid that they developed, but there are Israeli doctors who are saying that it would be fine to use other Cannabinoids to treat patients.

And studies show that cannabinoids help prevent any damage to the brain as well.