Stereo vision in the praying mantis

Key Points

  • Mantises are the only known invertebrate with 3D vision.
  • It is likely that the mechanism for 3D perception in an invertebrate will be simpler and may offer opportunities in understanding the human system and also an alternative, for example for robotic and electronic image capture.
  • The human system relies upon correlation of static luminance pattern differences between similar but disparate images, while that of the mantis interprets differences between different inputs after change or movement.