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Why Some People Can Hear Silent GIF (bbc.com)
An anonymous reader shares a BBC report: Some people claim they can hear a thudding sound when the pylon hits the ground and the picture vibrates. Last weekend, Dr Lisa DeBruine from the Institute of Neuroscience & Psychology at the University of Glasgow posted it on Twitter, asking her followers to describe whether they experienced any auditory sensations while watching it. One person who suffers from ringing ears replied: "I hear a vibrating thudding sound, and it also cuts out my tinnitus during the camera shake." Others offered explanations as to why. While another suggested it may have something to do with correlated neuronal activity: "The brain is 'expecting/predicting' what is coming visually and then fires a version of what it expects across the relevant senses. Also explains why some might 'feel' a physical shake."
It's a .mp4, not a .gif: https://video.twimg.com/tweet_video/DQFEhZ8WsAAbYCD.mp4
Just because it says "GIF" in the corner, that doesn't change the file format.
light travels faster than sound. your brain sees something that it knows will make a loud noise and your ears tense up in anticipation. the tensing of these muscles can be perceived.
https://en.wikipedia.org/wiki/Acoustic_reflex
Its similar to the gestalt principle. the brain knows what the sound should sound like, so the brain imagines the sound in place of its absence.
In visual arts the gestalt lets us complete images after only seeing a portion of said image... a simple example is a circle drawn with a dashed line that still looks like a completed circle.
In typography, the gestalt principle is demonstrated when you cover the lower half of the letters in a line of text. the brain can complete the shapes of the letters based on known/historical data, rendering the obstructed text complete within the mind.
...but I do "hear" the thudding in the same sense that I hear my internal monologue. What an odd sensation. XD
Don't just stand there, get that other dog!