Deepfaking the mind could improve brain-computer interfaces for people with disabilities

发布时间:2022.04.19 18:40  访问次数:  作者:

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Researchers at the USC Viterbi School of Engineering are using generative adversarial networks (GANs) -- technology best known for creating deepfake videos and photorealistic human faces -- to improve brain-computer interfaces for people with disabilities.


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In a paper published in Nature Biomedical Engineering, the team successfully taught an AI to generate synthetic brain activity data. The data, specifically neural signals called spike trains, can be fed into machine-learning algorithms to improve the usability of brain-computer interfaces (BCI).


BCI systems work by analyzing a person's brain signals and translating that neural activity into commands, allowing the user to control digital devices like computer cursors using only their thoughts. These devices can improve quality of life for people with motor dysfunction or paralysis, even those struggling with locked-in syndrome -- when a person is fully conscious but unable to move or communicate.


Various forms of BCI are already available, from caps that measure brain signals to devices implanted in brain tissues. New use cases are being identified all the time, from neurorehabilitation to treating depression. But despite all of this promise, it has proved challenging to make these systems fast and robust enough for the real world.


Specifically, to make sense of their inputs, BCIs need huge amounts of neural data and long periods of training, calibration and learning.


"Getting enough data for the algorithms that power BCIs can be difficult, expensive, or even impossible if paralyzed individuals are not able to produce sufficiently robust brain signals," said Laurent Itti, a computer science professor and study co-author.



原文链接:

https://www.sciencedaily.com/releases/2021/11/211118203621.htm

 


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