Related Experiment Video
Updated: Jun 15, 2025

Using Enclosed Y-Mazes to Assess Chemosensory Behavior in Reptiles
Published on: April 7, 2021
Wisdom of (molecular) crowds: How a snake's temperaturesensing superpower separates information from misinformation
1Simons Centre for the Study of Living Machines, National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru, India.
Abstract:
The namesake pit organ of pit vipers and other temperature-sensing snakes is a remarkable biological thermometer, one that converts infrared light into an electrical signal (Bullock and Diecke 1956). The organ is arranged like a pinhole camera, with a small outward-facing opening covering a pit membrane dense with neuronal projections. This geometry ensures that only light from a narrow angular cone lands on the membrane. By reorienting its head to scan its surroundings, the snake can precisely detect and localise warm-blooded prey even in complete darkness.
Related Concept Videos
Thermosensation
Responses to Heat and Cold Stress

