Stay updated with breaking news from Kamran safi. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
Científicos desvinculan la inteligencia del tamaño cerebral respecto del cuerpo en mamíferos diariosigloxxi.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from diariosigloxxi.com Daily Mail and Mail on Sunday newspapers.
How mammals evolved big brains Brain proportions were driven by body size and cataclysmic events. Scientists have now pieced together a 150-million-year timeline to determine how mammals evolved big brains. An international team, led by Jeroen Smaers of Stony Brook University, US, compared the brain mass of 1400 living mammals and 107 fossils and compared them to body size to determine how the scale of the two has changed through time. The result? Brain size and body size didn’t evolve in a stable way. Instead, the researchers found that big-brained animals like humans, elephants and dolphins all evolved their brain-to-body-size proportions in different ways. ....
Huge Study of Over 1,400 Species Could Change Our Understanding of Intelligence 30 APRIL 2021 When considering matters of intelligence among animals, it s not irrational to assume size matters. Bigger bodies allow for bigger brains, after all, and bigger brains provide the potential real estate for developing better problem-solving skills.
Yet neurons don t work for free, a fact that constrains how nervous systems might evolve in size and complexity in the first place. Just because skulls expand, doesn t mean nature will automatically fill them with grey matter. Strange as it seems, we know very little about the evolutionary forces responsible for diversifying brain size across the backboned part of the animal kingdom. ....
New research reveals changes in relative brain sizes over last 150 million years New research has demonstrated that, contrary to popular belief, relative brain size in mammals is not solely linked to intelligence but is driven by various evolutionary pressures on body size, including adaptations caused by mass extinction and changes in climate. The international study – the largest of its kind ever carried out – involved a team of 22 scientists, who investigated 1,400 living and extinct mammal species. In the UK, this involved Dr Jacob Dunn and Max Kerney of Anglia Ruskin University (ARU) as well as academics based at UCL, the University of Salford, and the Natural History Museum. ....
E-Mail Credit: Javier Lazaro (http://www.lazaroillustration.com/ Scientists from Stony Brook University and the Max Planck Institute of Animal Behavior have pieced together a timeline of how brain and body size evolved in mammals over the last 150 million years. The international team of 22 scientists, including biologists, evolutionary statisticians, and anthropologists, compared the brain mass of 1400 living and extinct mammals. For the 107 fossils examined among them ancient whales and the oldest Old World monkey skull ever found they used endocranial volume data from skulls instead of brain mass data. The brain measurements were then analyzed along with body size to compare the scale of brain size to body size over deep evolutionary time. ....