Comment on “Ear Deformations Give Bats a Physical Mechanism for Fast Adaptation of Ultrasonic Beam Patterns”

A Comment on the Letter by P. Dunne, L. Mazza, and J. M. D. Coey, Phys. Rev. Lett., 107, 214301 (2011). The authors of the Letter offer a Reply.

Figure 1

Measured spatial sensitivity patterns of R. ferrumequinum (no experimental data available beyond frontal hemisphere) [5, 6]. Contour lines are spaced 3 dB apart. Left: Hearing pattern. The asterisk indicates the reference point taken as the center of the hearing mainlobe. The colored crosses indicate the positions of the sidelobes for three different pinna positions in Fig. 3(c) in Goa et al. [1]. Red, pinna position 2; green, pinna position 3; blue, pinna position 4. Right: Emission pattern. Markers similar to those in the left panel. The angular interval between the azimuth and elevation parallels is 30 deg.