Such findings led the term to suggest that the ability to throw is, or was, a precursor to speech development in human beings. After making their discovery regarding the parts of the brain that appear to be involved in better throwing in chimps, the team tested the chimps and found that those that could throw better also appeared to be better communicators within their group, giving credence to their idea that speech and throwing are related.
Explore further. Abstract It has been hypothesized that neurological adaptations associated with evolutionary selection for throwing may have served as a precursor for the emergence of language and speech in early hominins.
Although there are reports of individual differences in aimed throwing in wild and captive apes, to date there has not been a single study that has examined the potential neuroanatomical correlates of this very unique tool-use behaviour in non-human primates.
In this study, we examined whether differences in the ratio of white WM to grey matter GM were evident in the homologue to Broca's area as well as the motor-hand area of the precentral gyrus termed the KNOB in chimpanzees that reliably throw compared with those that do not.
We found that the proportion of WM in Broca's homologue and the KNOB was significantly higher in subjects that reliably throw compared with those that do not. We further found that asymmetries in WM within both brain regions were larger in the hemisphere contralateral to the chimpanzee's preferred throwing hand.
We also found that chimpanzees that reliably throw show significantly better communication abilities than chimpanzees that do not. These results suggest that chimpanzees that have learned to throw have developed greater cortical connectivity between primary motor cortex and the Broca's area homologue.
It is suggested that during hominin evolution, after the split between the lines leading to chimpanzees and humans, there was intense selection on increased motor skills associated with throwing and that this potentially formed the foundation for left hemisphere specialization associated with language and speech found in modern humans.
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For general feedback, use the public comments section below please adhere to guidelines. Your feedback is important to us. However, we do not guarantee individual replies due to the high volume of messages. Because Santino always seemed well-armed, zookeepers investigated his enclosure and found that Santino had been stockpiling rocks from the moat that separated him from the fence.
Santino made sure to do this before the zoo opened so he would have ammunition at the ready. He even chipped away at big concrete rocks to craft dinner plate-sized projectiles. Other chimps have been observed to poop in their hands and then wait for an annoying human to pass by. Lots of things might cause chimps to feel disgruntled. In the wild, it might be having their buttons pushed by other primates. In zoos, they might be upset that people are staring at them and that they're limited in their movements.
Rocket flings another handful of shit at him, before some hiding apes pounce to take him down, grabbing his keys and enabling their escape. Director of the Lester E. Chimpanzees are prolific poopers with a pretty good arm and advanced cognitive skills. All of this comes together to make one of the funniest parts of War for the Planet pass the smell test. Not all poop-throwing is the same. Often a mad chimp might just toss poop in a haphazard way, not really aiming so much as just causing a fuss.
But before embarking on this journey of fecal discovery, it's important to ask: how often do monkeys — and, to be more accurate here, specifically primates of the non-human variety — actually throw poop?
Not very often, according to anthropology professor Karen Strier , who explained to Live Science that "primates in the wild don't normally throw feces. But generally speaking, you won't get a face full of monkey dung or stinky chimp chocolate unless you trap them in a zoo or in front of a typewriter.
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