Sentences with phrase «movement intentions»
"Movement intentions" refers to the thoughts or plans a person has about their actions or the way they want to move their body. Full definition
A challenge of decoding movement intention from intracortical electrodes is that the signals change over time — thus, intracortical BCIs have required frequent interruptions for decoder recalibration.
sciencedaily.com
Key to this work is a new approach that allows the user to voluntarily control the exoskeleton movements to yield more natural, intuitive and flexible ambulation by basing stride — the length and height of steps — on movement intention signaled by hands and fingers.
This recalibration is typically performed using a special task in which the participant tries to move the cursor to prescribed targets so that movement intentions can be mapped to the new neural activity patterns.
«We can use that information to update the map between the neural signals and the decoder's «understanding» of the person's movement intentions,» Jarosiewicz said.
For example, when the cursor was moving from B to R, the person's movement intentions can be inferred to have been directly toward the R.
Within milliseconds, the right - sided motor areas become active, and the movement intention is translated into actual contraction of muscles in the hand.
A major limitation of these devices is that the decoder requires frequent calibration — which is needed to accurately estimate an individual's movement intention — because neural signals change over time.
«We can obtain the movement intention from a patient's electroencephalogram (EEG)-- brain signals — and use it to directly control the exoskeleton,» Chen explained.
In 2015, Andersen and collaborators successfully implanted tiny prosthetic devices into the PPC of paralyzed patients; these so - called neuroprosthetics measure the movement intentions of the patient — to pick up a cup to take a drink, for example — and execute those movements accurately with a robotic arm.
For instance, aiming in a console first - or third - person shooter is incredibly frustrating for me because I know how much easier I can translate my movement intentions to actions with a mouse.