Functional magnetic resonance imaging reveals different neural substrates for the effects of orexin-1 and orexin-2 receptor antagonists.
Orexins are neuro-modulatory peptides involved in the control of diverse physiological functions through plastic masquerade masks interaction with two receptors, orexin-1 (OX1R) and orexin-2 (OX2R).Recent evidence in pre-clinical models points toward a putative dichotomic role of the two receptors, with OX2R predominantly involved in the regulation