Twice the Speed of Human Decision-Making
Researchers from the University of Tübingen have discovered that crows process visual decisions at double the speed of both humans and primates. In their study, two black crows were tested on their ability to determine the direction of moving dots. On average, the birds completed this task in just 235 milliseconds, achieving nearly perfect accuracy when the images were clear.
Neural activity in the nidopallium caudolaterale—a key associative brain region in birds—began to diverge within 70 milliseconds after the stimulus appeared. This finding indicates that although birds’ brains lack the layered cerebral cortex found in primates, they still perform visual processing through similar neural mechanisms, but more rapidly.
“These findings confirm that the neural dynamics in birds operate on the same fundamental principles we observe in humans and other primates,” said Professor Andreas Nieder.
The remarkable speed of crow cognition is likely an evolutionary adaptation, enabling instantaneous visual perception and motor response during flight. Despite anatomical differences between avian and primate brains, crows demonstrate impressive decision-making abilities.
“Even when the movement was barely perceptible, crows consistently chose the correct option well above chance levels,” noted Philipp Schmidbauer.
Published in the journal Science, this research highlights significant advances in understanding avian cognitive capabilities. It sheds light on the evolutionary adaptations that influence how different species process information swiftly and effectively.
These insights have broad implications for the study of cognition across animal species, including primates. They illustrate how diverse evolutionary paths can lead to similar cognitive functions, offering fresh perspectives on how animals adapt to their environments. This breakthrough encourages further exploration in neurobiology and evolutionary psychology.