Journal
ELIFE
Volume 10, Issue -, Pages -Publisher
eLIFE SCIENCES PUBL LTD
DOI: 10.7554/eLife.65566
Keywords
auditory cortex; natural sounds; functional ultrasound imaging; vocalizations; sensory coding; Ferret
Categories
Funding
- Agence Nationale de la Recherche [ANR-17-EURE-0017, ANR10-IDEX-0001-02]
- H2020 European Research Council [787836]
- Howard Hughes Medical Institute
- Life Sciences Research Foundation
- National Institutes of Health [NIDCD DC005779]
- Agence Nationale de la Recherche
- EMBO [ALTF 740-2019]
- European Research Council (ERC) [787836] Funding Source: European Research Council (ERC)
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The study found that there are significant differences in neural representations at late stages of auditory processing between humans and ferrets, potentially driven by higher-order processing demands in speech and music.
Little is known about how neural representations of natural sounds differ across species. For example, speech and music play a unique role in human hearing, yet it is unclear how auditory representations of speech and music differ between humans and other animals. Using functional ultrasound imaging, we measured responses in ferrets to a set of natural and spectrotemporally matched synthetic sounds previously tested in humans. Ferrets showed similar lower-level frequency and modulation tuning to that observed in humans. But while humans showed substantially larger responses to natural vs. synthetic speech and music in non-primary regions, ferret responses to natural and synthetic sounds were closely matched throughout primary and non-primary auditory cortex, even when tested with ferret vocalizations. This finding reveals that auditory representations in humans and ferrets diverge sharply at late stages of cortical processing, potentially driven by higher-order processing demands in speech and music.
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