Обычно «замораживание» проявляется на поздних стадиях заболевания и, сильно мешая человеку, может быть также и опасным. Человек может уже податься телом вперед — в то время как его нога замерла на месте: так можно потерять баланс и упасть.
Помочь при таком симптоме могут визуальные точки на полу (например, линии перед плитками), на которые бы человек ориентировался и которые бы перешагивал. Это активирует в мозге нейронные связи и помогает человеку продолжать движение.
В этом и заключается принцип работы новых лазерных ботинок, о которых кратко сообщает портал New Atlas. При контакте с землей каждый из них проецирует красную линию на пол — перед другим ботинком. Таким образом перед владельцем возникает визуальная точка, через которую он и перешагивает другой ногой (она же, точнее насадка на ботинок, проецирует новую точку и так далее).
В лабораторных тестах, в которых принимали участие 19 пациентов с болезнью Паркинсона, использование лазерных ботинок снижало количество случаев «замораживания» на 46 процентов. Причем когда данные случаи возникали, они были вдвое короче, чем случаи без использования лазерных насадок, сообщают исследователи.
В идеале, как говорят ученые, лазерные насадки должны активироваться (то есть, проецировать лазерные лучи) только в момент «замораживания», однако добиться этого достаточно трудно — ввиду сложности симптома.
На двух видео ниже показано, как один из участников исследования ходит без, а затем — с помощью, лазерных насадок.
Исследование было опубликовано в журнале Neurology.
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