Tactile Sensations
tactile sensations
Dr. Nicholas Hatsopoulos
A postdoctoral position is available beginning in 2023 to help develop a brain-machine interface for dexterous control of a cortically-controlled robotic arm and hand. The approach involves creating 1) decoding strategies from electrical signals in motor cortex that enable the user to not only control the movements of the arm and hand but also the forces transmitted through the hand and 2) encoding models to convey tactile sensations to the user through intracortical microstimulation of somatosensory cortex.
Skin-brain axis for tactile sensations
Microneurography And Microstimulation Of Single Tactile Afferents In The Human Hand
Microneurography is a method, invented by Ake Vallbo and Karl-Erik Hagbarth in the late 1960, with which we can record the activity from single, identified nerve fibres in awake human participants. In this talk, I will then discuss the method, its advantages and limitations, and some of the key discoveries regarding coding of tactile events in the signalling from receptors in the human skin. An extension of the method is to stimulate single afferents, and record the resulting tactile sensations reported by the participants, so-called microstimulation. The first experiments were done in the 1980s, but the method has recently seen a revival, and is currently being combined with high-resolution brain imaging in the study of the relationship between tactile nerve signals, sensations, and processing of tactile information in the brain.