Primates
Human brain’s voice area shows selective response to chimpanzee calls
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Researchers at the University of Geneva have found that specific regions of the human auditory cortex respond particularly strongly to chimpanzee vocalizations compared with those of other primates, including bonobos and macaques. The work, published as a reviewed preprint in eLife, suggests that human brain areas involved in voice processing are also tuned to certain nonhuman primate calls, reflecting shared evolutionary and acoustic roots.
A new study has shown that the brain regions controlling facial expressions in macaques work together in unexpected ways, challenging prior assumptions about their division of labor. Researchers led by Geena Ianni at the University of Pennsylvania used advanced neural recordings to reveal how these gestures are encoded. The findings could pave the way for future brain-computer interfaces that decode facial signals for patients with neurological impairments.
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Researchers at the University of Oxford have determined that kissing likely originated in the shared ancestor of humans and large apes around 21 million years ago. The study, published in Evolution and Human Behavior, suggests the behavior persisted through evolution and was probably practiced by Neanderthals. This finding highlights kissing as a deep-rooted social trait among primates.