PSYA01H3 Lecture Notes - Lecture 11: Detection Theory, Sympathetic Nervous System, Subliminal Stimuli
Document Summary
Short term survival -> sympathetic nervous system is triggered (fight or flight reaction) Long term survival -> hippocampus is triggered (memory) that results in triggers (ptsd) If sights, sounds and smells are not predictive of a danger, random triggers can occur (also. (e. g. your brain tries to find what in your environment caused the threat and associates it with it. Doors of perception" and pot movement from the 60s and 70s. We go from sensation to perception to recognition very quickly. Rough outline: occipital (vision input), temporal (sound input), parietal (body and world input) Weber"s technique -> about finding different thresholds to the point where participants can notice a difference. Just noticeable difference -> the minimum amount of a stimulus needed for the occipital system to detect it (difference tends to be a common fraction) Absolute threshold -> separates something you cannot detect from something you can.
