Fast sensory-motor reactions in echolocating bats to sudden changes during the final buzz and prey intercept

Proceedings of the National Academy of Sciences of the United States of America
Cornelia GeberlAnnemarie Surlykke

Abstract

Echolocation is an active sense enabling bats and toothed whales to orient in darkness through echo returns from their ultrasonic signals. Immediately before prey capture, both bats and whales emit a buzz with such high emission rates (≥ 180 Hz) and overall duration so short that its functional significance remains an enigma. To investigate sensory-motor control during the buzz of the insectivorous bat Myotis daubentonii, we removed prey, suspended in air or on water, before expected capture. The bats responded by shortening their echolocation buzz gradually; the earlier prey was removed down to approximately 100 ms (30 cm) before expected capture, after which the full buzz sequence was emitted both in air and over water. Bats trawling over water also performed the full capture behavior, but in-air capture motions were aborted, even at very late prey removals (<20 ms = 6 cm before expected contact). Thus, neither the buzz nor capture movements are stereotypical, but dynamically adapted based on sensory feedback. The results indicate that echolocation is controlled mainly by acoustic feedback, whereas capture movements are adjusted according to both acoustic and somatosensory feedback, suggesting separate (but coordinated) centr...Continue Reading

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Citations

Feb 10, 2016·Scientific Reports·Katrine Hulgard, John M Ratcliffe
Oct 5, 2017·Proceedings of the National Academy of Sciences of the United States of America·Jinhong Luo, Cynthia F Moss
Jul 7, 2018·Science Advances·Juliette J RubinJesse R Barber
Nov 9, 2018·Journal of the Royal Society, Interface·Per HenningssonAnders Hedenström
Dec 20, 2019·PLoS Computational Biology·Carl Bou MansourDieter Vanderelst
Jan 24, 2018·The Journal of Experimental Biology·Dennis LaurijssenJan Steckel
May 4, 2018·Proceedings. Biological Sciences·Aaron J Corcoran, Theodore J Weller
Nov 26, 2020·The Journal of Experimental Biology·Daniel Lewanzik, Holger R Goerlitz
Mar 5, 2021·Science Advances·Laura StidsholtPeter Teglberg Madsen
Oct 28, 2021·Proceedings. Biological Sciences·Grace C SmarshYossi Yovel

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