Effective biosonar echo-to-clutter rejection ratio in a complex dynamic scene

The Journal of the Acoustical Society of America
Jeffrey M KnowlesJ A Simmons

Abstract

Biosonar guidance in a rapidly changing complex scene was examined by flying big brown bats (Eptesicus fuscus) through a Y-shaped maze composed of rows of strongly reflective vertical plastic chains that presented the bat with left and right corridors for passage. Corridors were 80-100 cm wide and 2-4 m long. Using the two-choice Y-shaped paradigm to compensate for left-right bias and spatial memory, a moveable, weakly reflective thin-net barrier randomly blocked the left or right corridor, interspersed with no-barrier trials. Flight path and beam aim were tracked using an array of 24 microphones surrounding the flight room. Each bat flew on a path centered in the entry corridor (base of Y) and then turned into the left or right passage, to land on the far wall or to turn abruptly, reacting to avoid a collision. Broadcasts were broadly beamed in the direction of flight, smoothly leading into an upcoming turn. Duration of broadcasts decreased slowly from 3 to 2 ms during flights to track the chains' progressively closer ranges. Broadcast features and flight velocity changed abruptly about 1 m from the barrier, indicating that echoes from the net were perceived even though they were 18-35 dB weaker than overlapping echoes from su...Continue Reading

References

Oct 1, 1989·The Journal of the Acoustical Society of America·J A SimmonsT J Wohlgenant
Jul 1, 1973·The Journal of the Acoustical Society of America·J A Simmons
Dec 7, 2000·The Journal of the Acoustical Society of America·A Surlykke, C F Moss
Aug 29, 2003·The Journal of the Acoustical Society of America·Kaushik Ghose, Cynthia F Moss
Mar 3, 2006·PLoS Biology·Cynthia F MossAnnemarie Surlykke
Mar 6, 2009·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Susan SümerHans-Ulrich Schnitzler
Mar 14, 2009·The Journal of Experimental Biology·Annemarie SurlykkeCynthia F Moss
Mar 27, 2009·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Anthony E PetritesCaroline M DeLong
Mar 31, 2010·Proceedings of the National Academy of Sciences of the United States of America·Shizuko HiryuHiroshi Riquimaroux
Aug 27, 2010·Frontiers in Behavioral Neuroscience·Cynthia F Moss, Annemarie Surlykke
Jan 26, 2013·Scientific Reports·Promode R BandyopadhyayAren M Hellum
Mar 1, 2013·The Journal of Experimental Biology·Jonathan R BarchiJames A Simmons
Jun 7, 2014·The Journal of Experimental Biology·Sonja SändigAnnette Denzinger
Jun 14, 2014·The Journal of the Acoustical Society of America·Michaela WarneckeJames A Simmons
Aug 15, 2014·The Journal of Experimental Biology·James A Simmons
Nov 15, 2014·The Journal of Experimental Biology·Benjamin FalkCynthia F Moss

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Citations

Nov 2, 2016·The Journal of Experimental Biology·Kelsey N HomAndrea Megela Simmons
Mar 17, 2019·The Journal of Experimental Biology·James A SimmonsUday Shriram
Jan 23, 2020·Scientific Reports·James A SimmonsAndrea M Simmons
Jan 3, 2020·The Journal of the Acoustical Society of America·Hyeon LeeRolf Müller
Dec 20, 2019·PLoS Computational Biology·Carl Bou MansourDieter Vanderelst
Jul 8, 2020·Proceedings of the National Academy of Sciences of the United States of America·Chen MingJames A Simmons
Feb 18, 2021·PLoS Computational Biology·Chen MingJames A Simmons
Feb 12, 2021·The Journal of Experimental Biology·M Jerome BeetzJulio C Hechavarría

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