In this episode Jason Wallach and I discuss the strange origin of the head twitch response and how it became the most important behavioral correlate for 5HT2A agonism in non-human animals. Paper: Permanent alteration of behavior in mice by chemical and psychological meansTop Tree Herbs Kratom Tea BagsTop Tree Herbs is the first kratom tea bag companyLucy Tobacco Free NicotineLucy's mission is to reduce tobacco-related harm to zero.Mind Cure HealthA Full Cycle of Mental Wellness From Resea...