Pigeons are not simple & # 39; bird brains & # 39 ;: study – tech2.org

Pigeons are not simple & # 39; bird brains & # 39 ;: study



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Published:
12:43 EST, December 4, 2017

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Updated:
12:43 EST, December 4, 2017

"Those avian nervous systems are capable of much greater achievements than the pejorative term 'bird brain' would suggest," said study author Edward Wbaderman

Pigeons can be smarter than what you believe

A study on Monday in the journal Current Biology found that pigeons are capable of judging time and space, just like humans and apes.

The report is the latest to show that so-called low-range animals such as birds, reptiles and fish are capable "In fact, the cognitive skills of birds are now considered increasingly closer to that of both human and female primates. not human, "said study author Edward Wbaderman, professor of experimental psychology at the University of Iowa.

" These avian nervous systems are capable of much greater achievements than the pejorative term "brain" would suggest. bird & # 39 ;. "

The birds were shown a computer screen on which a horizontal line appeared for two or eight seconds. [19659006] Som etimes the line was 9.5 inches (24 centimeters) long; other times it was two inches (five centimeters).

Pigeons could peck one of four visual symbols to indicate whether the line they saw was long or short, or if it appeared briefly or for a long time. The correct answer provided them with food.

The researchers then made the task more complicated, introducing more line lengths and causing the test to vary so that pigeons can be randomly tested in space or time.

"The pigeons judged longer lines also have a longer duration and consider that longer lines are also longer," says the report.

Experiments in humans and monkeys have shown similar results.

But the area of ​​the human brain where this processing takes place – the parietal cortex – does not seem to exist in pigeons.

That suggests that complex processing takes place in another part of the birds' brain.

"The cortex is not unique in judging space and time," said co-author Benjamin De Corte, a graduate student at the University's Institute of Neuroscience at Iowa.

"Pigeons have other brain systems that allow them to perceive these dimensions."

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