From Nature:
Although the study was limited by having only a small sample of participants, and all with the same disorder, it nonetheless provides invaluable information, says neuroscientist Gregory Hickok at University of California, Irvine. This line of work might eventually help people who have strokes or other problems that affect speech. “If we can crack the neural code for speech motor control, it could open the door to neural prostheses,” Hickok says. “There are already neural implants that allow individuals with spinal-cord injuries to control a robotic arm. Maybe we could do something similar for speech?”

For the full story, please visit http://www.nature.com/news/why-tongue-twisters-are-hard-to-say-1.12471.