Lab-grown brain organoids learn to read Braille

University of Bristol researchers fed tactile Braille signals into lab-grown forebrain organoids on microelectrode arrays. A single organoid identified letters with 61% accuracy, and three combined reached 83%. Cortical Labs separately used neuron firing rates to steer a robot dog.

• A ~10,000-cell organoid identified Braille letters with 61% accuracy
• Combining three organoids raised accuracy to 83%
• Cortical Labs tested ~1,300 stimulation configurations; 12 showed consistent learning
• Neuron firing frequency directed a robot dog's movement in a test space