Humans can categorize colors they don’t have words for, research on stroke victims shows

color perception words neurosciencenews public

After patient RDS (identified only by his initials for privacy) suffered a stroke, he experienced a rare and unusual side effect: when he saw something red, blue, green, or any other chromatic hue, he could not name the object’s color.

Using RDS as a subject, a study publishing on September 3 in the journal Cell Reports looks at how language shapes human thinking. Neuroscientists and philosophers have long wrestled with the interaction between language and thought: do names shape the way we categorize what we perceive, or do they correspond to categories that arise from perception?

Viewing discs containing two colors from the same color category (e.g., two blue shades) or from different categories (e.g., brown and red), RDS was asked to identify same-category colors.

Related article:  Psychotherapy revival: Can “talk” therapy change our brains and genes?

Before his stroke, RDS perceived and named colors normally. After the stroke, an MRI revealed a lesion in the left region of his brain. This lesion apparently severed RDS’s memory of color names from his visual perception of colors and his language system. Yet RDS could still group most colors–even colors he couldn’t name–into categories such as dark or light or as being a mixture of other colors.

Read full, original post: Human perception of colors does not rely entirely on language, a case study

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Infographic: What are mRNA COVID-19 vaccines and how do they work?

Infographic: What are mRNA COVID-19 vaccines and how do they work?

As of 1 December 2020, thirteen vaccines have reached the final stage of testing: where they are being given to ...
favicon

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

Optional. Mail on special occasions.
Send this to a friend