Fig. 6From: Perceptual learning in the identification of lung cancer in chest radiographsValue of d’ from the testing sessions involving parts of an image. Left: the small cutout with a side length equal to the tumor diameter. Middle: the large cutout with a side length twice the tumor diameter. Right: the background region after the tumor was cut out. Error bars show +/− 1 S.E. of the meanBack to article page