- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Medical means of measuring neural activity which corresponds to the level of pain as it is being experienced by a patient. Aboard Constitution-class starships, the biobed monitors included a K-3 indicator.