Transmitter and receiver of the low frequency horseshoe bat Rhinolophus paradoxolophus are functionally matched for fluttering target detection.
Level 5 - mechanism / opinion, no new human data
Animal physiological and behavioral study without human data
PubMed 36136120 · doi:10.1007/s00359-022-01571-0
What was done
The authors investigated transmitter (vocal) and receiver (auditory) properties within individual Bourret's horseshoe bats (Rhinolophus paradoxolophus). They assessed Doppler shift compensation (DSC) precision—the ability to stabilize echo frequency at a reference frequency (f_ref)—and measured audiograms to evaluate cochlear fovea tuning relative to f_ref.
What was found
The abstract reports no numerical values or metrics. Qualitatively, transmitter and receiver systems were functionally matched, DSC precision matched that of other flutter-detecting foragers, audiogram sensitivity peaked (had a threshold minimum) at f_ref, and coupled resting frequency and f_ref varied together over time.
Why it matters
The findings confirm that an allometric outlier species within the rhinolophid family maintains tightly coupled audio-vocal coordination, supporting the hypothesis of universal functional matching across flutter-detecting foragers.
Limits
The abstract reports no sample size (n) and no quantitative data or error bounds. Findings are limited to comparative neuroethology in bats and have no direct human clinical application.