Which substance can cause vivid visual perceptions and is typically described as hallucinogenic, with effects subsiding within hours?

Which substance can cause vivid visual perceptions and is typically described as hallucinogenic, with effects subsiding within hours?

• A. Alcohol
• B. LSD
• C. Methamphetamine
• D. Cannabis

Answer: (B)

Perceptual distortion, especially vivid visual hallucinations, is the hallmark of classic hallucinogens. LSD fits this description best: it reliably produces intense visual experiences—bright colors, geometric patterns, and altered perceptions of time and space—and its effects tend to fade within a matter of hours. The other substances listed don’t center on vivid visual hallucinations as their defining effect—alcohol is a depressant, methamphetamine is a stimulant, and cannabis may alter perception but usually not with the strong, lasting visual hallucinations associated with LSD.

Perceptual distortion, especially vivid visual hallucinations, is the hallmark of classic hallucinogens. LSD fits this description best: it reliably produces intense visual experiences—bright colors, geometric patterns, and altered perceptions of time and space—and its effects tend to fade within a matter of hours. The other substances listed don’t center on vivid visual hallucinations as their defining effect—alcohol is a depressant, methamphetamine is a stimulant, and cannabis may alter perception but usually not with the strong, lasting visual hallucinations associated with LSD.