Coursera Spring Sale
40% Off Coursera Plus Annual!
Grab it
In this final lecture of the 1975 Royal Institution Christmas Lectures series, Professor Heinz Wolff explores the fascinating signals humans receive and transmit about emotional and mental states. Delve into how we interpret social cues like facial expressions, voice tones, and body language across different cultures, and learn how these non-verbal communications form complex codes that must be learned. Discover how emotions physically manifest in measurable physiological responses that form the basis for technologies like lie detectors. As part of the "Signals from the Interior" series, this hour-long lecture completes Wolff's exploration of non-invasive techniques for understanding the human body, comparing the challenge to diagnosing a car without opening the hood. Originally recorded on January 2, 1976, this historic presentation represents part of the Royal Institution's 200-year legacy of Christmas Lectures that showcase science with curiosity and mind-blowing demonstrations.
