These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Pulse-echo interaction in free-flying horseshoe bats, Rhinolophus ferrumequinum nippon.
    Author: Shiori Y, Hiryu S, Watanabe Y, Riquimaroux H, Watanabe Y.
    Journal: J Acoust Soc Am; 2009 Sep; 126(3):EL80-5. PubMed ID: 19739702.
    Abstract:
    Because horseshoe bats emit a long-duration pulse, the returning echo temporally overlaps with the emitted pulse during echolocation. Here, the pulse-echo interaction that horseshoe bats actually experience during flight was examined using onboard telemetry sound recordings. Doppler-shifted returning echoes produced beats in the amplitude patterns of constant-frequency components. Bats shortened the pulse duration with target distance, but the overlap duration was at least 8 ms within the approach phase. The computations suggest that the phase difference in slowly amplitude-modulated sound (the beat signal) provides a useful cue for target localization.
    [Abstract] [Full Text] [Related] [New Search]