Augmented manipulation ability in humans with six-fingered hands (Important research showing neuroplasticity and its relations to neurotechnology) User Chrome_Plated, in the Neural Lace: BCIs and Neural Interfaces subreddit, 21 Jun 2019
0.2% of people are born with >5 fingers and extra ones are typically removed, but case studies of adults with six fingers finds the brain is perfectly capable of controlling them and they can do things others would need two hands for. User ZephirAWT, in the Science: Uncensored. Science with no political censorship by Mods subreddit, 17 Jun 2019
0.2% of people are born with >5 fingers and extra ones are typically removed, but case studies of adults with six fingers finds the brain is perfectly capable of controlling them and they can do things others would need two hands for. User Barknuckle, in the Everything Science subreddit, 16 Jun 2019