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. 2016 Feb 24;11(2):e0149525. doi: 10.1371/journal.pone.0149525

Fig 4. Light is able to penetrate human skull via ear canals.

Fig 4

(A) Light penetration through the ear canals at the base of the scull on a cadaver after inserting the Bright Light Ear Headset into both ear canals under normal surgical lights in the autopsy room and (B) same skull base after turning the surgical lights off and darkening the room.