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July 22, 2021
Uncategorized

用意念就能走 新機器裝助癱瘓者再站起來

根據最新研究,一套透過大腦訊號指揮和控制的全身式外骨骼裝,成功幫助一名肩膀以下癱瘓的男子再度行走,讓臥床兩年忘記走路感覺的他直呼如同「登月第一人」。

30歲的提博在4年前不慎從15公尺高處跌落,傷及脊髓而癱瘓。在醫院躺2年後,加入了法國生物醫學研究中心與格勒諾柏大學的外骨骼研究計劃。研究團隊設計出一個半侵入性無線腦機系統,將兩個記錄器以手術方式,植入到提博頭部兩側的大腦與皮膚之間,以橫跨大腦控制感覺與運動功能的感覺動作皮質區。一個記錄器包含64個電極,會讀取大腦活動,將移動四肢的訊號傳到附近的電腦,透過演算法解譯成提博想到的動作,變成控制外骨骼服活動的指令。只要提博想到「走」,外骨骼服就會發出移動腿的連鎖指示。在外骨骼服實驗期間,提博也要接受不同的心理任務,訓練演算法理解他的想法,逐漸增加能做出的動作。

這項研究讓癱瘓人士改善生活品質露出曙光。格勒諾柏大學神經外科醫師貝納畢教授指出,這套外骨骼服目前只是原型機,距離投入臨床應用的程度還很早。提博仍需利用安裝在天花板的繫帶保持平衡,將跌出外骨骼服的風險降到最低。此外,整套系統能即時讀取的大腦訊號數據量有限,尚存改進空間。

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