Many factors weigh into how we perceive the world, and last night we tapped into two areas: hearing and memory, at a “Pint of Science” gathering at DROM in the East Village. Beer in hand, attendees packed the venue, eager to learn more from hometown scientists James Hudspeth of Rockefeller University and Paula Croxson of Mount Sinai.
Hudspeth, a Dana Alliance member and hearing expert, spoke about how hearing works, and the role of tiny hair cells in the cochlea. As explained on his Howard Hughes Medical Institute page, “Each cochlea normally contains about 16,000 hair cells, which convert mechanical inputs derived from sounds into electrical signals that the brain can interpret.”
It is the loss of these hair cells, which don’t regenerate in humans, that leads to the most common form of hearing loss, said Hudspeth. Lucky for us, other species can regenerate these cells (amphibians and reptiles, for example). Dr. Hudspeth is using zebra fish in his lab to study this ability; he hopes new therapies can be produced for people in the next five to ten years. In the meantime, cochlear implants are being used by more than 300,000 people in the US.