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This study examined how an echolocating bottlenose dolphin's jitter-detection threshold varied as a function of the number of jittered echoes made available for comparison. The dolphin's task was to report when a phantom echo at a simulated range of 10 m began to jitter in delay. Experimental conditions included a single \u201cstep\u201d change in echo delay, between 3 and 33 jittering echoes, and an unlimited number of jittering echoes. As the number of jittering echoes increased from 1 to 9, jitter-detection thresholds linearly decreased from 84 to 1.8 \u03bcs. There were no significant changes in thresholds for more than nine jittering echoes. The results were consistent with a decision model based on multiple looks and highlight the role of multi-echo processing in dolphin biosonar tasks.<\/jats:p>","DOI":"10.1121\/10.0046470","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T12:11:33Z","timestamp":1789560693000},"page":"2338-2344","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Effect of the number of jittering echoes on jittered delay accuracy in a bottlenose dolphin"],"prefix":"10.1121","volume":"160","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2226-3894","authenticated-orcid":false,"given":"Madilyn R.","family":"Pardini","sequence":"first","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Dr. #200, San Diego, California 92106,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Austin","family":"O'Kelley","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Dr. #200, San Diego, California 92106,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0969-8033","authenticated-orcid":false,"given":"James J.","family":"Finneran","sequence":"additional","affiliation":[{"name":"U.S. Navy Marine Mammal Program, Naval Information Warfare Center Pacific Code 56710 2 , 53560 Hull St., San Diego, California 92152,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katie A.","family":"Christman","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Dr. #200, San Diego, California 92106,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8090-4733","authenticated-orcid":false,"given":"Jason","family":"Mulsow","sequence":"additional","affiliation":[{"name":"U.S. Navy Marine Mammal Program, Naval Information Warfare Center Pacific Code 56710 2 , 53560 Hull St., San Diego, California 92152,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0960-8528","authenticated-orcid":false,"given":"Dorian S.","family":"Houser","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Dr. #200, San Diego, California 92106,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","published-online":{"date-parts":[[2026,9,16]]},"reference":[{"key":"2026091608112929200_c1","doi-asserted-by":"publisher","first-page":"1155","DOI":"10.1121\/1.1590969","article-title":"Multiecho processing by an echolocating dolphin","volume":"114","year":"2003","journal-title":"J. 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