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New wireless system can restore communication and mobility in people with paralysis Brain-computer interfaces (BCIs) are an emerging assistive technology, enabling people with paralysis to type on computer screens or manipulate robotic prostheses just by thinking about moving their own bodies. For years, investigational BCIs used in clinical trials have required cables to connect the sensing array in the brain to computers that decode the signals and use them to drive external devices. Now, for the first time, BrainGate clinical trial participants with tetraplegia have demonstrated use of an intracortical wireless BCI with an external wireless transmitter. The system is capable of transmitting brain signals at single-neuron resolution and in full broadband fidelity without physically tethering the user to a decoding system. ....
Being able to make blind people see again sounds like the stuff of miracles or even science fiction. And it has always been one of the biggest challenges for scientists. Diego Ghezzi, who holds the Medtronic Chair in Neuroengineering (LNE) at EPFL's School of Engineering, has made this issue a research focus. ....
High-resolution imaging, 3D computer modeling reveal the fractal nature of neurons High-resolution imaging and 3D computer modeling show that the dendrites of neurons weave through space in a way that balances their need to connect to other neurons with the costs of doing so. The discovery, reported in Nature Scientific Reports Jan. 27, emerged as researchers sought to understand the fractal nature of neurons as part of a University of Oregon project to design fractal-shaped electrodes to connect with retinal neurons to address vision loss due to retinal diseases. The challenge in our research has been understanding how the neurons we want to target in the retina will connect to our electrodes. Essentially, we have to fool the neurons into thinking that the electrode is another neuron by making the two have the same fractal character. ....
Developing Biochemically Sensitive Membranes with Electrochemistry Thought LeadersLane BakerProfessor of ChemistryIndiana University Bloomington In this interview, News-Medical Life Sciences talks to Lane Baker, Professor of Chemistry at Indiana University Bloomington about the role of electrochemistry in developing biochemically sensitive membranes as well the work ongoing at the Baker lab. Can you define nanoscale electrochemistry? The term ‘nanoscale electrochemistry’ has two meanings: One involves getting things down to the nanometer scale, but the second is when the properties of the system change. When you get to scales that are very small, things behave differently. We saw this in electrochemistry in the late 1980s and early 90s, when things shrunk to the microscale. This brought about a revolution in electrochemistry, and nanoscale is the next revolution, as we move to even smaller scales where we find new phenomena related to the dimensions. Ever ....
With the seemingly unstoppable advancement in the fields of miniaturization and materials science, all sorts of electronic devices have emerged to help us lead easier and healthier lives. ....