Neuroprosthetics are implantable devices that can replace or improve functions of the central nervous system. Popular examples include cochlear implants, which allow deaf people to hear, and auditory brain stem implants for those born without a cochlear nerve. Neuroprosthetics are also being developed for motor functions like controlling prosthetic limbs and for cognitive functions. Recent advances include a quadriplegic woman controlling a robotic arm to drink from a bottle using a straw, though current prosthetics still lack sensory feedback. Researchers are working to develop prosthetics that can provide sensations like touch, but this remains a significant challenge. With further research and funding, neuroprosthetics may someday restore full functionality for many disabilities.