Longer yawn may relate to bigger brain size, says study
Posted on: 10/Oct/2016 10:47:16 AM
New research shows that a longer yawn may correlate to a bigger brain size. The study conducted by researchers from the State University of New York also found that the animals with bigger brains are more variable in the length of their yawns.
Results of the study showed that gorillas, horses, walruses and African elephants may have huge sizes but they have shorter yawns than humans because the size of their brains are smaller compared with ours. The animals with bigger brain were more variable in the length of their yawns.
Experts say, It is possible that more intelligent animals have different types of yawn in response to different stimuli while the less-intelligent ones only have one type of yawn. According to the researchers, We show that both the mean and variance in yawn duration are robust predictors of mammalian brain weight and cortical neuron number.
