Characterizing non-hallucinogenic psychedelics beyond the head twitch response: phenotypic fingerprinting of lisuride and LSD
Translational Psychiatry June 13, 2026 Jillian L. King, Devin P. Effinger, Cameron Basquez-Pfeifer et al.
The head-twitch response (HTR) is widely used as a preclinical assay for the hallucinogenic potential of compounds, with its utility based on 5HT 2A R activation. Here, we examine how the polypharmacological agonists lisuride and lysergic acid diethylamide (LSD) influence behavioral and physiological outcomes in mice to test whether the HTR reliably reflects overall psychoactivity. Lisuride...