Cannabinoids, such as Δ9-tetrahydrocannabinol (THC), produce anxiety at high doses, yet the underlying neural mechanisms remain poorly understood. The anterior cingulate cortex (ACC) sends dense monosynaptic projections to the dorsomedial striatum (DMS). Optogenetic excitation of the ACC → DMS pathway promotes anxiolytic-like behavior, suggesting that its suppression could induce anxiogenic...
Psychedelics such as psilocybin show great promise for the treatment of depression and PTSD, but their long duration of action poses practical limitations for patient access. 4-OH-DiPT is a fast-acting and shorter-lasting derivative of psilocybin. Here we characterized the pharmacological profile of 4-OH-DiPT and examined its impact on fear extinction learning as well as a potential mechanism...