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Man born blind has synaesthesia that makes numbers feel textured

A man born without sight has a rare form of synaesthesia in which he feels numbers, days of the week and months as different textures

By Jason Arunn Murugesu

19 April 2022

Âé¶¹´«Ã½. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Synaesthesia can make people associate colours with words or concepts

Qi Yang/Getty Images

For people with synaesthesia, hearing music may make them see a colour or feel a texture. The condition has now been reported for the first time in someone who was born blind, showing that vision isn’t necessary for synaesthesia to develop even though sight is involved in many cases of synaesthesia.

at the University of Trento in Italy and his colleagues studied a 40-year-old man who was born blind and who described his synaesthesia to them.

Bottini found the man by chance. “He was…

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