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The team previously showed that their thermosensitive technology could restore passive thermosensation in 17/27 amputees.

A thermosensitive section of the device also allows it to detect temperature changes, using a special dye -- similar to that in color-changing t-shirts or mood rings -- that desaturates in color when it is heated.

An intramuscular syringe is one option Davis said his team is exploring, while a psychedelic startup called Biomind Labs is developing a thermosensitive nasal gel that can deliver the drug.

It uses special thermosensitive paper as "film."