Next time you see a summer blockbuster or art house film and you see a scene where everything is in slow motion, consider this: researchers have found that our perception of time is actually distorted during clips of slow and fast biological movements (such as people moving). For example, subjects reported that stimuli lasted for a shorter period of time while viewing slow motion footage. As well as being beautiful cinematic techniques, overcranking (slow motion) and undercranking (fast motion) film also affects our perception of reality.
Time perception is not always accurate. We know this from experience. An hour of playing a fun video game may feel like 15 minutes, a bad movie can feel like eternity. But interestingly, there is a 3-second “point of indifference,” a term coined in 1868. Tones shorter than 3-seconds are reported as being longer, and tones longer than 3-seconds are reported as being shorter. And even though technology has sped up, our cars got faster, and we’re constantly looking at 3 websites at once, this 3-second point of indifference has remained.