Some people are trapped within their own minds, able to think and feel but unable to express themselves because brain injury or disease has damaged their lines of communication with the outside world. As a step toward helping people in such situations communicate, scientists at Washington University School of Medicine in St. Louis have demonstrated that they can use light to detect what is going on inside someone’s head. The researchers use LED light beamed from the outside of the head inward to detect activity in the area of the brain responsible for visual processing, and then decode brain signals to determine what the person sees. Accomplishing this feat required the development of neuroimaging tools and analysis techniques that move the field a step closer to solving the much more complex problem of decoding language. The study, available online in the journal NeuroImage, demonstrates that high-density diffuse optical tomography (HD-DOT) — a noninvasive, wearable, light-based brain imaging technology — is sensitive and precise enough to be potentially useful in applications such as augmented communication that are not well suited to other imaging methods. Credit: Edward del Rosario/Washington University School of Medicine Research paper: Decoding visual information from high-density diffuse optical tomography neuroimaging data https://www.sciencedirect.com/science/article/pii/S1053811920310016 News Source: https://source.wustl.edu/2021/01/brain-signals-decoded-to-determine-what-a-person-sees/ ... https://www.youtube.com/watch?v=FxqDc1bODE8

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Google is showing a doodle in some countries on 23 April 2021, for celebrating the spanish Letter Ñ The only letter in the Spanish alphabet that originated in Spain, the consonant Ñ is not only a letter but a representation of Hispanic heritage and identity as well. See the Google Doodle celebrating the Letter Ñ at https://www.google.com/doodles/celebrating-the-letter-n Read more details about Ñ at https://en.wikipedia.org/wiki/%C3%91 ... https://www.youtube.com/watch?v=V1x8dNGk2go

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