Image of an eye inside of a color wheel
How the brain helps us see is a captivating subject in the world of neuroscience.
  • BrainFacts/SfN
Your selections: Vision
Vision requires teamwork. Nerve cells in the retina communicate with one another to create optimal messages to send to the brain.
  • BrainFacts/SfN
Our brains’ recognition of objects depends on their orientation. What do you see in this image?
  • BrainFacts/SfN
Hallucinations emerge when inner thoughts and expectations overpower sensory experience.
  • BrainFacts/SfN
Does this brain appear to be rotating? Rapid, involuntary eye movements paired with sharp contrast patterns in an image may cause the brain to perceive motion where there is none.
  • BrainFacts/SfN
Dragonflies hover smoothly in part thanks to information collected by their eyes. Knowing these insects' retinal circuitry helps scientists understand how neurons process spatial data.
  • BrainFacts/SfN
The brain receives information about the outside world via the senses. But how much of this information do we actually notice?
  • BrainFacts/SfN
Neurons in the eye turn light into electrical signals. How and where signals travel between these cells is thought to affect vision.
Synesthesia is a condition in which stimulation of one sense automatically evokes a perception in an unstimulated sense.
  • BrainFacts/SfN
To be able to see anything, eyes first need to process light. Vision begins with light passing through the cornea.
  • BrainFacts/SfN
The moment light meets the retina, the process of sight begins. About 60 years ago, scientists discovered that each vision cell’s receptive field is activated when light hits a tiny region in the center of the field and inhibited when light hits the area surrounding the center.
  • BrainFacts/SfN
During this lab activity, students will explore two types of sensory processes. First, they will investigate how one identifies different flavors. Then, they will explore the ways the brain interprets the visual images that reach the eye.
  • University of Pennsylvania
An interactive website about the eye. Learn about the parts of the eye and eye safety, and try out some optical illusions.
  • National Eye Institute

3D Brain

An interactive brain map that you can rotate in a three-dimensional space.