Researchers have shown that lab-grown human brain organoids can classify letters of the Braille alphabet, according to a study published in Frontiers in Artificial Intelligence. A single organoid containing about 10,000 neurons identified the letters with roughly 61 percent accuracy, while a group of three organoids reached 83 percent accuracy.
The team, led by Tianyi Liu at Bristol University, used a tactile sensor to scan Braille letters and convert the patterns into electrical stimulation fed to the organoids. The work is part of organoid intelligence, an emerging field exploring whether biological tissue can act as "wetware" for computing. Earlier studies had already shown organoids recognizing speech or playing Pong.
Liu cautioned that this was an open-loop experiment: the organoids received inputs but no feedback, so the results do not prove they learned Braille or were permanently changed. She also noted limitations such as natural variation between organoids, the need to keep them alive in cultures, and challenges with reliability, reproducibility, and scalability compared with conventional chips.