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. 2013 Jan 9;6:89. doi: 10.3389/fnbeh.2012.00089

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Copyright © 2013 Grimsley, Gadziola and Wenstrup.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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Comparison of acoustic features of pup vocalizations in three mouse strains. (A) Distributions of the frequency transitions. The vertical lines at 20 kHz marks the criterion for a frequency step across the three strains. (B) Distributions of the average frequency of syllables without frequency steps. The vertical lines mark the boundary between high and low syllables, which differs among strains. (C) The proportion of each syllable type for the three mouse strains, based on the mouse syllable classification calculator.