Funding for this research was provided by:
National Institutes of Health (R01-NS096786, 1R01DC017695)
Received: 11 May 2018
Accepted: 29 November 2018
First Online: 20 December 2018
Ethics approval and consent to participate
: This study was previously reviewed by the Salk Institute Institutional Review Board and the need for approval was waived.
: Not applicable
: The authors declare that they have no competing interests.
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