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Animal Cognition

, Volume 18, Issue 5, pp 1165–1179 | Cite as

Learned vocal and breathing behavior in an enculturated gorilla

  • Marcus Perlman
  • Nathaniel Clark
Original Paper

Abstract

We describe the repertoire of learned vocal and breathing-related behaviors (VBBs) performed by the enculturated gorilla Koko. We examined a large video corpus of Koko and observed 439 VBBs spread across 161 bouts. Our analysis shows that Koko exercises voluntary control over the performance of nine distinctive VBBs, which involve variable coordination of her breathing, larynx, and supralaryngeal articulators like the tongue and lips. Each of these behaviors is performed in the context of particular manual action routines and gestures. Based on these and other findings, we suggest that vocal learning and the ability to exercise volitional control over vocalization, particularly in a multimodal context, might have figured relatively early into the evolution of language, with some rudimentary capacity in place at the time of our last common ancestor with great apes.

Keywords

Breath control Gorilla Koko Multimodal communication Primate vocalization Vocal learning 

Notes

Acknowledgments

We are grateful to videographer Dr. Ronald Cohn and the Gorilla Foundation for providing the video on which this article is based, and for their permission to post the video clips in Supplementary Information. We are also grateful to Katarina Noelle for her assistance with the research.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical standard

All applicable national guidelines for the care and use of animals were followed. All the procedures performed were in accordance with the ethical standards of the institution or practice at which the studies were conducted.

Supplementary material

10071_2015_889_MOESM1_ESM.pdf (82 kb)
Supplementary material 1 (PDF 82 kb)
10071_2015_889_MOESM2_ESM.zip (685.1 mb)
Supplementary material 2 (ZIP 701546 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of PsychologyUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Department of PsychologyUniversity of California, Santa CruzSanta CruzUSA

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