Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Jan 15;10:382. doi: 10.1038/s41598-019-57346-2

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Ensonification of the masking board at different angles. (A) The set-up of the ensonification experiment. Bat-like signals were played through a speaker and returning echoes were recorded with a microphone located above the speaker. Recordings were performed at a distance of 50 cm from the platform with an additional 30 cm from the masking board (80 cm total), at sixteen angles. The platform was not present during the ensonification experiment. (B) The echo intensity for the smallest angles used by individual bats in the no masker condition (maximum) and the smallest angles used in any of the other experimental conditions (minimum). Colors indicate the different individuals and shapes indicate the condition in which the angle was minimal. (C) Echo peak intensity (dB) of the masking board at sixteen different vertical angles (mean ± SE). Echoes were band-pass filtered between 35–45 kHz. Intensities and SE are in logarithmic scale. Means were normalized relative to 90 degrees.