When people take a sub-perceptual amount—for LSD, about 10 micrograms (also known as a micro-dose, sub-dose, or “tener”)—the common sensory effects associated with higher doses of LSD or psilocybin—a glow or a sparkle around the edges of living things, sensory interweaving such as hearing in color or tasting music, and a loosening of ego boundaries—do not appear.
