Judith M. Varkevisser

This study identifies isochronous rhythms in chimpanzee displays, suggesting shared rhythmic mechanisms between humans and non-human primates.

The paper investigates how subsemitone changes in a non-standard trichord affect perceived consonance, finding that certain modifications reduce consonance more than others, contradicting acoustic models.

This study reports an adult male gibbon producing female-specific great-calls, suggesting reduced testosterone levels may allow for cross-sex song production in gibbons.