Neuroanatomy

A weekly deep dive into the hidden architecture of your mind. V3: Where Vision Starts Going Global Where It Lives V3, sometimes referred to as the tertiary visual cortex, is an extrastriate visual area located just beyond V2 in the visual processing hierarchy. It lies adjacent to V2 within the occipital lobe and receives most of its input from V2. Compared to V1 and V2, V3 represents a slightly later stage of visual processing and serves as an early higher-order visual area.

A weekly deep dive into the hidden architecture of your mind. V2: Where Early Vision Starts Becoming Interpretation Where It Lives V2, also known as the secondary visual cortex, the prestriate cortex, or Brodmann area 18, is located immediately adjacent to V1 in the occipital lobe. It forms a thin, horseshoe-shaped band that surrounds V1 on both the medial (toward the midline) and lateral (away from the midline) surfaces of the brain. While V1 lines the calcarine sulcus, V2

Understanding How Our Brain Sees When you open your eyes or encounter something new, your brain quickly creates a picture of what you are seeing. In about 100 milliseconds (ms), your brain has already formed a basic image of your surroundings. This image isn't complete, but it gives you a clear outline of what is there. Here is what actually happened in that brief moment: 0-10 ms: Light hits the retina. At the back of the eye is the retina, which contains photoreceptors. Pho