hallucination:
when you smell, hear, taste, touch something receptors in your skin, nose, tongue, ears sense the incoming stimuli and send input to your brain, allowing you to experience those particular sensations. sometimes, however, the brain can recieve or interrpret input from those receptors, even when nothing is stimulating them, and therefore, you may be able to see, hear taste, etc. things that are not "there". This sensation can be induced with drugs called hallucinogens, whcih i believe marijuana is... although some pepople dont classify it as such. the drugs work on the parts of the brain that percieve stimulation and tell you things are there or happening that truely arent. i am not sure if all people experience hallucinations when smoking marijuana and certainly not to the extent of other drugs such as LSD and mushrooms, but i am sure it is possible.
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