Why Does Evolution Allow Some People to Taste Words?

A neural condition that tangles the senses so that people hear colors and taste words could yield important clues to understanding how the brain is organized, according to a new review study. This sensory merger, called synesthesia, was first scientifically documented in 1812 but was widely misunderstood for much of its history, with many experts thinking the condition was a form of mild insanity."It's not just that the number two is blue, but two is also a male number that wears a hat and is in love with the number seven," said study co-author David Brang, of the University of California, San Diego (UCSD). "We're not sure if these personifications are [also a symptom of] synesthesia, but we think this is what...
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