The following submission statement was provided by /u/unswsydney:

Hi r/Futurology, cheers for having us!

A team of UNSW researchers led by Professor François Ladouceur have demonstrated that sensors built using liquid crystal and integrated optics technologies can measure neural activity using light – rather than electricity – which could lead to a complete reimagining of medical technologies like nerve-operated prosthetics and brain-machine interfaces.

The team's research has been published in the Journal of Neural Engineering: https://iopscience.iop.org/article/10.1088/1741-2552/ac8ed6

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/yebkt0/engineers_at_unsw_have_found_a_way_to_convert/itx3cpz/