The standard apparatus is designed to test the cat's ability to detect and orient to a visual stimulus introduced into the visual field through an aperture located on or below the horizontal meridian (see Fig. 2F of [14]). The apparatus is a white semicircular platform with a diameter of ...
we found that sessions with recording locations close to the vertical meridian did not exhibit our predicted main effect. We reasoned that this lack of effect was likely because the two stimuli were too close to each other, allowing the monkey to attend to both...