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Brain and vision

Brain and vision


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Science Photo Library

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Brain and vision

Illustration of visual pathways from the retina of the eye to the brain cortex (seen from below). At the back of each eye (at top), the light-sensitive membrane of the retina transforms visual images into nerve impulses. These images are binocular in that the visual field of each eye overlaps. Each eye has a unique field of view too, which is also analysed by the brain. Light that falls on the right side of each retina (blue) from the left field of view, passes as impulses to the right visual cortex of the brain via the optic nerves at centre, and chiasma (cross-point of these nerves). This is reversed for light that falls on the left side of the retina (coloured red)

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6449015

© JOHN BAVOSI/SCIENCE PHOTO LIBRARY

Brain Anatomy Central Nervous System Circuit Nerve Pathways Sight Vision Visual Sense Visual Cortex


EDITORS COMMENTS
This print showcases the intricate pathways that connect our eyes to our brain, allowing us to perceive and interpret the world around us. The illustration depicts the visual pathways from the retina of the eye to the brain cortex, as seen from below. At first glance, we are drawn to the back of each eye where a light-sensitive membrane called the retina transforms visual images into nerve impulses. These impulses carry vital information about what we see and are essential for our perception of reality. Interestingly, these visual images are binocular in nature, meaning that they overlap in both eyes' visual fields. Delving deeper into this complex system, we discover that each eye has its own unique field of view which is meticulously analyzed by our remarkable brain. As light falls on one side of each retina - blue for right and red for left - it passes through optic nerves located at the center before reaching their respective sides in the brain's visual cortex via a cross-point known as chiasma. This awe-inspiring artwork not only highlights how vision works but also emphasizes how intricately connected various components within our body can be. It serves as a reminder of just how extraordinary human anatomy truly is – an exquisite blend of artistry and science working harmoniously together to grant us with one of life's most precious gifts: sight.

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