It took just 72 hours for me to lose my sight entirely. Just before my blindness hit, I had been laid up with an unknown virus that had left me suffering severe headaches and sweats. My body’s immune ...

Pupil size in people with synesthesia changed depending on how bright or dark the perceived colors were.

People who see colors while perceiving smells are better at distinguishing between different smells and different colors, and are better at naming odors, compared to a group without synesthesia.

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See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Carol Steen's father once corrected her about the color of the number ...

Not everyone's senses are separate. Those with the neurological condition can hear colors, feel sounds and even see time as different points in space. When Bernadette Sheridan hears your name, she ...

Acquired synesthesia, as it is known, develops temporarily during a person’s lifetime, often provoked by hallucinogenic drugs, brain injury or sight loss. In my case, I had likely experienced two ...