Focusing on the largest pyramidal neurons in the motor cortex, researchers found dendritic branches do not simply pass movement information forward. Each sub-branch calculates the information and passes it to larger sub-branches, which in turn, perform the same operation. Multiple dendritic branchlets can interact with each other to amplify their combined computational product.
Researchers report multiple areas of the frontal lobe control the muscles of vocalizations and could control complex speech. The findings refute the long-standing belief that only the primary motor cortex directly influences the larynx.
Neural activity patterns for limb movements remain stable over time. Researchers were able to record, decode, and reconstruct activity patterns from common movement skills. The findings could have immediate implications for the development of neuroprosthetics that can bypass brain injuries by inferring intended motor actions from a person's brain.
A portable transcranial direct current stimulation headset may provide relief for those with joint pain.
Expert pianists have altered mechanisms by with tactile and proprioceptive sensations suppress activity in the primary motor cortex.
Findings allow for the development of an autonomously updating brain-machine interface, which is able to improve on its own by learning about its subject without additional programming. The system could help develop new robotic prosthetics, which can perform more naturally.