Journal
NEURON
Volume 89, Issue 3, Pages 629-644Publisher
CELL PRESS
DOI: 10.1016/j.neuron.2015.12.035
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Funding
- HHMI International Pre-Doctoral Fellowship
- DAAD (German Academic Exchange Foundation)
- Alfred P. Sloan Foundation
- Human Frontiers Science Program
- National Science Foundation CAREER award
- NIH New Innovator Award
- NSF BRAIN Initiative EAGER award
- McKnight Foundation
- Klingenstein-Simons Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1054578] Funding Source: National Science Foundation
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Diverse animal species, from insects to humans, utilize acoustic signals for communication. Studies of the neural basis for song or speech production have focused almost exclusively on the generation of spectral and temporal patterns, but animals can also adjust acoustic signal intensity when communicating. For example, humans naturally regulate the loudness of speech in accord with a visual estimate of receiver distance. The underlying mechanisms for this ability remain uncharacterized in any system. Here, we show that Drosophila males modulate courtship song amplitude with female distance, and we investigate each stage of the sensorimotor transformation underlying this behavior, from the detection of particular visual stimulus features and the timescales of sensory processing to the modulation of neural and muscle activity that generates song. Our results demonstrate an unanticipated level of control in insect acoustic communication and uncover novel computations and mechanisms underlying the regulation of acoustic signal intensity.
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