Archives of General Psychiatry reported this month that there are different ingredients in marijuana that affect parts of the brain in different ways especially when the brain is processing functions involving responses to certain visual stimuli and task.
Fifteen healthy men who were occasional marijuana users were studied by Sagnik Bhattacharyya, M.B.B.S.; M.D. Ph. D. and some of his colleagues at the institute of Psychiatry, King’s college in London. They were looking to see the effects of THC and CBD on regional brain function during salience processing, that is how people perceive things around them.
They used functional MRI images to study each person’s on three occasions after they had taken marijuana or placebo. The participants were made to perform visual oddball task so they could measure their way of perceiving things.
Tuscaloosa, Alabama in-patient drug rehabs could use this information to better understand the nature of addiction.
What was found is that THC significantly increased the severity of psychotic symptoms compared with placebo and CBD. When they looked at the placebo and compared it with CBD there was no significant difference. THC had a greater effect than placebo on reaction time to relative stimuli.
They concluded that “collectively” these observations suggest that THC may increase the aberrant attribution of how they perceive and induce psychotic symptoms through its effects on the brain.
Many drug rehabs in Alabama would agree that THC can produce a bad effect on its user.
There it is scientific study of how marijuana affects the brain function. We only had to ask a regular user and they would have given you a personal account of what it does to them when they smoke it.