Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=28747478
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Humans recognize emotional arousal in vocalizations across all classes of
terrestrial vertebrates: evidence for acoustic universals
#MMPMID28747478
Filippi P
; Congdon JV
; Hoang J
; Bowling DL
; Reber SA
; Pa?ukonis A
; Hoeschele M
; Ocklenburg S
; de Boer B
; Sturdy CB
; Newen A
; Güntürkün O
Proc Biol Sci
2017[Jul]; 284
(1859
): ? PMID28747478
show ga
Writing over a century ago, Darwin hypothesized that vocal expression of emotion
dates back to our earliest terrestrial ancestors. If this hypothesis is true, we
should expect to find cross-species acoustic universals in emotional
vocalizations. Studies suggest that acoustic attributes of aroused vocalizations
are shared across many mammalian species, and that humans can use these
attributes to infer emotional content. But do these acoustic attributes extend to
non-mammalian vertebrates? In this study, we asked human participants to judge
the emotional content of vocalizations of nine vertebrate species representing
three different biological classes-Amphibia, Reptilia (non-aves and aves) and
Mammalia. We found that humans are able to identify higher levels of arousal in
vocalizations across all species. This result was consistent across different
language groups (English, German and Mandarin native speakers), suggesting that
this ability is biologically rooted in humans. Our findings indicate that humans
use multiple acoustic parameters to infer relative arousal in vocalizations for
each species, but mainly rely on fundamental frequency and spectral centre of
gravity to identify higher arousal vocalizations across species. These results
suggest that fundamental mechanisms of vocal emotional expression are shared
among vertebrates and could represent a homologous signalling system.
free
free
free
