New tool helps cochlear implant patients hear with improved clarity
Advancements in cochlear implant research at Western University might just be music to the ears to the deaf or hard of hearing.
Western researchers, working with international colleagues, have developed a new tool that helps cochlear implant patients hear their world with improved clarity.
Luke Helpard, PhD candidate at Western’s School of Biomedical Engineering, said patients with cochlear implants often process sounds that seem warped or out of tune.
“We call it a pitch mismatch, where frequencies are perceived different from their natural pitch. And that may not sound like a big deal, but that can have a lot of consequences for things like speech perception, music appreciation, even sound localization.”
According to the Schulich School of Medicine and Dentistry, when cochlear implants are surgically placed, electrodes are inserted along the cochlea -- the part of the inner ear that converts vibrations into pitches of sound -- and Helpard says that until now programming has been one-size-fits-all.
“Some users have qualitatively reported that a cochlear implant can sound like Mickey Mouse, or Darth Vader, or these sort of warped type of hearing where it doesn’t sound natural.”
Helpard is part of a team that has come up with a tool to mathematically program the cochlear implant for each patient’s specific needs. They’re using imaging data to customize the pitch map for each patient.
A pitch map refers to how simulation frequencies are assigned to each electrode, and ultimately, how sounds are perceived by the patient.
“With this new tool we’re able to model individual pitch maps relatively accurately, and much more accurately than any previous approaches,” said Helpard. “So we really think this will revolutionize how cochlear implant programming will happen.”
The project is being co-led by Hanif Ladak, PhD, a professor at Schulich and the Faculty of Engineering, along with Dr. Sumit Agrawal, an associate professor at Schulich.
The new tool is currently being used in trials. In a news release from Schulich, Ladak noted they’re already seeing real world results.
“Typically, when we talk about math, people can’t see how it is applicable in real life. What’s beautiful about this is that our mathematical tool has an obvious real-life application and audiologists are already beginning to evaluate it in patients.”
Helpard said they’re hoping the new tool will “improve quality of life overall through speech perception, music perception, and as well the ability to perceive sounds in nature.”
CTVNews.ca Top Stories
More than 115 cases of eye damage reported in Ontario after solar eclipse
More than 115 people who viewed the solar eclipse in Ontario earlier this month experienced eye damage after the event, according to eye doctors in the province.
Toxic testing standoff: Family leaves house over air quality
A Sherwood Park family says their new house is uninhabitable. The McNaughton's say they were forced to leave the house after living there for only a week because contaminants inside made it difficult to breathe.
Decoy bear used to catch man who illegally killed a grizzly, B.C. conservation officers say
A man has been handed a lengthy hunting ban and fined thousands of dollars for illegally killing a grizzly bear, B.C. conservation officers say.
B.C. seeks ban on public drug use, dialing back decriminalization
The B.C. NDP has asked the federal government to recriminalize public drug use, marking a major shift in the province's approach to addressing the deadly overdose crisis.
OPP responds to apparent video of officer supporting anti-Trudeau government protestors
The Ontario Provincial Police (OPP) says it's investigating an interaction between a uniformed officer and anti-Trudeau government protestors after a video circulated on social media.
An emergency slide falls off a Delta Air Lines plane, forcing pilots to return to JFK in New York
An emergency slide fell off a Delta Air Lines jetliner shortly after takeoff Friday from New York, and pilots who felt a vibration in the plane circled back to land safely at JFK Airport.
Sophie Gregoire Trudeau on navigating post-political life, co-parenting and freedom
Sophie Gregoire Trudeau says there is 'still so much love' between her and Prime Minister Justin Trudeau, as they navigate their post-separation relationship co-parenting their three children.
Last letters of pioneering climber who died on Everest reveal dark side of mountaineering
George Mallory is renowned for being one of the first British mountaineers to attempt to scale the dizzying heights of Mount Everest during the 1920s. Nearly a century later, newly digitized letters shed light on Mallory’s hopes and fears about ascending Everest.
Loud boom in Hamilton caused by propane tank, police say
A loud explosion was heard across Hamilton on Friday after a propane tank was accidentally destroyed and detonated at a local scrap metal yard, police say.