[Placebo]
Related Experiment Video
Updated: Sep 25, 2026

How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants
Published on: December 14, 2014
1Klinik für Anästhesie, Intensivmedizin und Schmerztherapie, Alfried-Krupp-Krankenhaus, Essen.
Background:
The placebo reaction is a widely known phenomenon but the way it develops is not fully understood. This fact has given rise to numerous misinformed opinions on this subject.
Placebo Analgesia:
More research has been done in the field of placebo analgesia, where the involvement of the endogenous opioid systems was discovered some twenty years ago. Recently there have been some new discoveries concerning the role of expectancy and drug conditioning in experimentally induced placebo analgesia.
Placebo Reaction:
The placebo reaction is very impressive not only following drug administration, but also after surgical operations. In many cases, it is extremely difficult to decide whether a therapeutic success is due to a given medical intervention or to a placebo response. The use of placebo controlled clinical studies remains an ethically charged issue.
More Related Videos
Related Concept Videos
The Placebo Effect
Blind Procedures
Blinding
Classical Conditioning in Daily Life
John B. Watson and Rosalie Rayner famously demonstrated the development of fear through classical conditioning in their experiment with Little Albert. They paired the...
Cholinergic Antagonists: Pharmacological Actions
Gastrointestinal Effects: Antimuscarinics reduce gut contractions, increase gastric emptying, and slow intestinal transit. They partly inhibit gastric acid secretion...
Dose-Response Relationship: Potency and Efficacy

