Why we can't see our own nose: new study explains phenomenon

The nose occupies about 10 to 15 percent of each eye's visual field, but the brain ignores it during normal binocular vision, so it does not appear clearly in our daily awareness.

A recent study titled "Understanding Human Perception of the Nose in Binocular Vision" examined this phenomenon, known as "nasal visual suppression," and explained how the brain processes the image of the nose in front of the eyes without making it a distinct part of the visual experience.

According to the study, the nose can be seen clearly when we focus on it or close one eye, but the brain excludes it during normal vision because of its fixed position and proximity to the eyes, as well as the difference in its image between the right and left eyes.

The study also notes that the nose usually does not provide new or necessary information for decision-making, making it a likely candidate for exclusion from conscious perception.

The study explained that the brain does not register everything the eyes capture equally; instead, it selects and prioritizes information, giving more attention to changing signals or those related to movement or danger. Stable and predictable information, such as the presence of the nose, is ignored by the brain and becomes part of the visual background without continuous conscious processing.

This phenomenon confirms that human vision is not simply a mechanical recording of everything in front of the eyes, but an active process of selection and interpretation.

Anyone can test this by looking at a distant object and then trying to notice their nose, observing its presence at the edge of the visual field without drawing attention, while its perceptual presence changes when one eye is closed.