Gorillas in the Lung

Inattentional blindness causes 83 percent of radiologists to fail to spot an image of a gorilla inserted into the CT scan of a pair of lungs.

Written byChris Palmer
| 2 min read

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A majority of trained radiologists did not spot the gorilla in the upper right hand part of this CT image of a pair of lungs as they scanned for nodules.

TRAFTON DREW AND JEREMAY WOLFE/BRIGHAM AND WOMEN’S HOSPITAL

Anyone who’s taken an introductory psychology course in the last 20 years likely remembers the “invisible gorilla” video. The video shows a group of kids engaged in a ball-passing game while, mostly unnoticed, a man in a gorilla suit scurries through the scene. The video is a striking example of a phenomenon called inattentional blindness, whereby observers may miss unexpected, but salient, events while engaged in other tasks. Researchers at Brigham and Women’s Hospital (BWH) ...

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