In 2017, additional studies were performed to treat Usher syndrome and here, a recombinant adeno-associated virus seemed to outperform the older vectors. Audition
Besides research studies seeking to improve hearing, such as the ones listed above, research studies on the deaf have also been carried out in order to understand more about audition. Pijil and Shwarz (2005) conducted their study on the deaf who lost their hearing later in life and, hence, used cochlear implants to hear. They discovered further evidence for rate coding of pitch, a system that codes for information for frequencies by the rate that neurons fire in the auditory system, especially for lower frequencies as they are coded by the frequencies that neurons fire from the basilar membrane in a synchronous manner. Their results showed that the subjects could identify different pitches that were proportional to the frequency stimulated by a single electrode. The lower frequencies were detected when the basilar membrane was stimulated, providing even further evidence for rate coding. See also
Deaf hearing
H.870
Otologics
Safe listening
World Hearing Day

References
External links

Hearing loss at Curlie
National Institute for the Prevention of Deafness and other Communication Disorders
Global Costs of unaddressed hearing loss and cost-effectiveness of interventions World Health Organization. 2017. Internet archive on 12 May 2020. Deafness and Hearing Loss. World Health Organization. 2022. Internet archive on 9 June 2022 ISBN 978-92-4-151204-6. Occupational Noise and Hearing Loss Prevention U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health. (6 February 2018).
Measures of flow rate
According to the kinetic theory of gases, the kinetic energy for a gas at a temperature 
  
    
      
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