Stereoscopic vision

Definition

Stereoscopic vision is the ability to perceive three-dimensional depth based on the visual input from both eyes. This capability allows for precise judgment of distance and spatial relationships.

5 Must Know Facts For Your Next Test

1. Stereoscopic vision is achieved through the slightly different images each eye receives, known as binocular disparity.
2. It is a crucial evolutionary adaptation in primates for navigating through complex environments like forests.
3. The visual cortex processes these differing images to create a single, three-dimensional perception of the world.
4. Primates have forward-facing eyes which enhance their stereoscopic vision compared to other vertebrates with side-facing eyes.
5. Stereoscopic vision contributes significantly to hand-eye coordination, an essential trait for tasks such as grasping and tool use.

Review Questions

• How does binocular disparity contribute to stereoscopic vision?
• Why is stereoscopic vision considered an important evolutionary trait in primates?
• What role does the visual cortex play in stereoscopic vision?

Related terms

Binocular Vision: The ability to use both eyes together to focus on a single point.

Visual Cortex: The part of the brain that processes visual information received from the eyes.

Depth Perception: The ability to judge the distance and three-dimensional relations of objects accurately.