You might think back back in 2017 when one particularly judgment - blowing GIF fit viral after cross the Internet with its unusual ability to evoke audile hallucination . The GIF itself was silent , and yet70 per centum of peoplereported being able to hear it . What on Earth was going on ?

We ’re refer to this skip - jumping pylon , which , according to some , made a thudding auditory sensation every time it pip the ground :

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Since then , some researcher have attempted to explain the strange phenomenon of " noisy GIFS " . Notably , in 2018 , a study published in the journalCortexsuggested that this entirely bizarre occurrent – bonk as “ visually - evoked auditory response ” ( vEAR ) – affects roughly 20 percent of the population .

vEAR is a subcategory ofsynesthesia , a condition where the senses get muddled so that a person might " see " letters as specific colouration or " smell " dissimilar musical style of medicine . Traditionally , scientist estimate synaesthesia affects 4.4 per centum of the universe but the 2018 study suggests this common instance of sensory " crosstalk " where masses " listen " news bulletin and trend in still videos could be far more widespread .

Researchers from City University in London recruited 4,128 volunteers to complete a survey testing their power to " take heed " gifs , such as a ballet dancer do a pirouette . The respondent rated 24 silent picture clip on a scale of one to five , with one being “ no auditory sentience at all ” and five being " brilliant and definite audile aesthesis ” . They were also ask to provide demographic information and know any previous experience of vEAR .

A subset of the group ( 1,058 volunteers ) was also asked to finish additional trait - interrelate questions , such as   “ Do you suffer from tinnitus ( phone in the ears ) ? ” and “ Do you ever hear medicine in your drumhead ? ”

" Some people get word what they see . Car index number Christ Within , flashing neon shop sign , and the great unwashed ’s movements as they take the air may all trigger an audile aesthesis , ” Dr Elliot Freeman , author of the sketch , say in astatementat the clip .

" Ours is the first prominent - shell survey of this ability . We found that as many as 21 percentage of hoi polloi may experience descriptor of this phenomenon , which clear it considerably more prevalent than other synesthesias . ”

The respondents were more probable to report " hear " more realistic imaging ( suppose : hammer hit nails ) as opposed to the more abstract imagery ( swirl dots ) , though many described " auditory sense " both . The researchers found the synesthetes were also more probable to say they experience tinnitus and musical imagery , intimate an underlying physiologic cause to all three phenomena .

" We intend that these sensations may sometimes reflect escape of entropy from optic parts of the wit into areas that are more unremarkably devoted to see . In uttermost material body of this XT , any abstract ocular motion or flashing may be sufficient to trigger the sense impression of hearing sound , " explained Freeman .

It ’s worth channelise out that the study was based on self - reporting and needs to be replicated , but it could offer interesting insights into the path people with synesthesia experience the public around them .

Another study , also author by Freeman andpublished in 2020 , essay to elucidate the mechanisms support this bod of synesthesia . Its findings suggest there may be " two independent mechanics underlie vEAR and its tie in traits , based putatively on cortical disinhibition versus excitableness . "

But enough about hearing silent GIFS , can yousee time ?

An earlier version of this clause was published inMarch 2018 .