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The distracter was presented at different angular offsets and distances from the bat. The results of this study show that the distance and the angular offset of the distracter influence sonar vocalization parameters of the big brown bat, Eptesicus fuscus. Specifically, the bat adjusted its call duration to the closer of two objects, distracter or insect target, and the magnitude of the adjustment depended on the angular offset of the distracter. In contrast, the bat consistently adjusted its call rate to the distance of the insect, even when this target was positioned behind the distracter. The results hold implications for understanding spatial information processing and perception by echolocation.<\/jats:p>","DOI":"10.1121\/1.3504707","type":"journal-article","created":{"date-parts":[[2011,1,11]],"date-time":"2011-01-11T13:55:56Z","timestamp":1294754156000},"page":"3788-3798","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":27,"title":["Spatial perception and adaptive sonar behavior"],"prefix":"10.1121","volume":"128","author":[{"given":"Murat","family":"Aytekin","sequence":"first","affiliation":[{"name":"Institute for Systems Research, University of Maryland Department of Psychology, , 1147 Biology\/Psychology Building, College Park, Maryland 20742"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beatrice","family":"Mao","sequence":"additional","affiliation":[{"name":"University of Maryland Department of Biology, , 1206 Biology\/Psychology Building, College Park, Maryland 20742"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cynthia F.","family":"Moss","sequence":"additional","affiliation":[{"name":"Institute for Systems Research Department of Psychology, , University of Maryland, 1147 Biology\/Psychology Building, College Park, Maryland 20742"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023073107192256100_c1","volume-title":"Listening in the Dark","year":"1958"},{"key":"2023073107192256100_c2","first-page":"557","article-title":"Echolocation by insect-eating bats","volume":"57","year":"2001","journal-title":"BioScience"},{"key":"2023073107192256100_c3","doi-asserted-by":"publisher","first-page":"13116","DOI":"10.1073\/pnas.0804408105","article-title":"Flying in silence: Echolocating bats cease vocalizing to avoid sonar jamming,","volume":"105","year":"2008","journal-title":"Proc. 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