{"data":[{"source":"bio.acousti.ca","id":"53317","type":"article","title":"Forward masking recovery in bottlenose dolphins ( Tursiops truncatus): Auditory brainstem responses to paired-click stimuli in high-pass masking noise","author":"Mulsow, Jason; Coffinger, Sean P.; Finneran, James J.; Burkard, Robert F.","editor":null,"year":"2018","month":null,"journal":"The Journal of the Acoustical Society of America","booktitle":null,"series":null,"howpublished":null,"volume":"144","number":"3","pages":"1740 - 1740","chapter":null,"edition":null,"publisher":null,"organization":null,"institution":null,"school":null,"address":null,"type_of_work":null,"note":null,"isbn":null,"issn":"0001-4966","doi":"10.1121\/1.5067718","url":"http:\/\/asa.scitation.org\/doi\/10.1121\/1.5067718","attachments":null,"keywords":null,"abstract":"Adaptation is a fundamental process in the auditory system and underlies the automatic gain control system of echolocating bottlenose dolphins. As pulse-echo delay increases, auditory brainstem response (ABR) amplitudes to the echoes progressively increase. This study examined adaptation across cochlear frequency regions using a paired-click (i.e., forward masking) paradigm and high-pass masking noise. Bottlenose dolphins passively listened to paired click stimuli (20\u2013160 kHz \u201cpink\u201d spectra). A \u201cconditioning\u201d click was followed by a \u201cprobe\u201d click with equal amplitude and a time delay ranging from 125 to 750 \u03bcs. ABRs to click pairs were obtained with and without high-pass masking noise that precluded the basal turn of the cochlea from responding to the click stimuli. The ABR evoked by a single click (temporally aligned with the first click of the paired-click condition) was subtracted from the click-pair ABR to visualize the response evoked by the probe click. Probe ABR amplitudes recovered linearly with increasing delay relative to the conditioning click, and were approximately 70% of full response amplitude at 750-\u03bcs delay. Paired-click interval ABR amplitude recovery functions were similar for the unmasked and high-pass masked conditions. [Work sponsored by ONR.]","type_name":"Journal Article","journal_abbreviation":"The Journal of the Acoustical Society of America","pmid":null,"info_url":"https:\/\/bio.acousti.ca\/node\/53317"}]}