Final answer:
Synesthesia is a condition involving mixed sensory experiences and is not induced by hallucinogens, whereas hallucinogens are drugs that can cause significant perceptual changes, making the original statement false.
Step-by-step explanation:
The statement 'Synesthesia refers to the experiencing of hallucinogenic effects even months after taking the drug.' is false. Synesthesia is a neurological condition where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway. It is characterized by the mixing of senses, such as seeing sounds or tasting colors. While both synesthesia and the effects of hallucinogens involve sensory perception, synesthesia is a naturally occurring phenomenon and not related to drug use. On the other hand, hallucinogens are a class of drugs that can cause significant alterations in perception, mood, and thought, sometimes leading to hallucinations or profoundly distorted reality.