What is the term used to describe the indentation between the forehead and the nose?

The indentation between the forehead and the nose is termed the nasion. This anatomical landmark is specifically defined as the bony and cartilaginous junction between the frontal bone of the skull and the nasal bones. It represents an important reference point in various medical practices, including imaging and anthropometry, where precise knowledge of facial landmarks is essential. The nasion is situated directly above the bridge of the nose and serves as the midpoint of the nasal bones, making it particularly significant in both clinical and cosmetic assessments.

Understanding the nasion is important in neuroimaging and EEG placements, as it helps in localizing electrode positions and ensuring accurate readings from the forehead region. In contrast, the glabella refers to the smooth area of the forehead between the eyebrows, while the frontalis is a muscle located in the forehead, and the bridge of the nose is a standalone anatomical feature that refers to the bony structure of the nose itself.