LSD/ acid had been around for 70 years, yet there has been very few, if any studies on a users brain. Scientists belive the drug influences receptors involved in regulating of serotonin (neurotransmitters.) Serotonin regulates mood, motor control, sensory perception, hunger, body temperature, and sexual behavior. Scientist finally figured out that LSD effects the post-synaptic activity of serotonergic neurons, type 5-HT2.
LSD's impact on the brain revealed in groundbreaking images