Funding for this research was provided by:
National Institutes of Health (DC005409, DC002739)
National Institute on Deafness and Other Communication Disorders (DC004661)
Schmitt Foundation for Integration brain Research
NIH-NIA (AG09524)
Article History
Received: 7 June 2018
Accepted: 18 July 2019
First Online: 13 August 2019
Compliance with Ethical Standards
: All protocols were approved by the IACUCs of the Universities of Washington and Rochester and were in accord with USPHS regulations and the Federal Animal Welfare Act.
: The authors declare that they have no conflict of interest.