placebo effect

placebo effect illustration showing the brain descending pain modulatory pathway releasing endogenous opioids

Science Made Simple Why It Happens

October 1, 2026

The Placebo Effect: How Expectations Can Change Pain and Symptoms

Illustration showing how expectations and predictions in the brain shape perception of reality through top-down processing

Brain & Psychology

May 13, 2026

How Expectations Shape Perception — The Invisible Filter Behind Everything You See, Hear, and Feel