their brain signals in a consistent and reliable manner. This may involve practicing specific mental tasks, such as imagining the movement of a particular body part or paying attention to one (and only one) of multiple visual stimuli. In some cases, the BCI itself may also need to be retrained. This may involve updating the signal processing algorithms or adjusting the classification model to better accommodate changes in the user's brain signals. For example, if the user ex- periences changes in their brain activity due to medication or other factors, the BCI may need to be retrained to recognize and interpret these changes accurately. Additionally, brain signals used to control the BCI may change over time, and the BCI must adapt to these changes to maintain accuracy and reliability. Re- training can take various forms, depending on the specific BCI and the intended application. Overall, retraining is an important aspect of BCI development and use and plays a critical role in ensuring that BCIs remain ef- fective and reliable over time. By incorporating strategies for re- training and adaptation into the design of BCIs, researchers and clinicians can help to maximize their potential to improve the lives of individuals with neurological conditions or injuries. With this powerful technology the need for retraining is needed to ensure the highest level of accuracy for word or phrase selec- tion. REFERENCES: Arwa Rekik, Saloua Mrabet, Imen Kacem, Amina Nasri, Mouna Ben Djebara, Amina Gargouri, and Riadh Gouider Eye Movement Abnormalities in Amyotrophic Lateral Scle- rosis in a Tunisian Cohort https://www.ncbi.nlm.nih.gov/pmc/ articles/PMC9291663/ Xintong Guo, Xiaoxuan Liu,Shan Ye, Xiangyi Liu, Xu Yang, and Dongsheng Fan Eye Movement Abnormalities in Amyotrophic Lateral Sclero- sis https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9026966 David A. Moses, Ph.D., Sean L. Metzger, M.S., Jessie R. Liu, B.S., Gopala K. Anumanchipalli, Ph.D., Joseph G. Makin, Ph.D., Pengfei F. Sun, Ph.D., Josh Chartier, Ph.D., Maximilian E. Dougherty, B.A., Patricia M. Liu, M.A., Gary M. Abrams, M.D., Adelyn Tu-Chan, D.O., Karunesh Ganguly, M.D., Ph.D., et al. Neuroprosthesis for Decoding Speech in a Paralyzed Person with Anarthria https://www.nejm.org/doi/full
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