The Anatomy of Visual Sensation Retina – Light-sensitive layer at the back of the eyeball Photoreceptors – Light-sensitive cells in the retina that convert light energy to neural impulses Rods – Sensitive to dim light but not colors Cones – Sensitive to colors but not dim light Fovea – Area of sharpest vision in the retina

The Anatomy of Visual Sensation Optic nerve – Bundle of neurons that carries visual information from the retina to the brain Blind spot – Point where the optic nerve exits the eye and where there are no photoreceptors

Transduction of Light in the Retina

Afterimages Afterimages – Sensations that linger after the stimulus is removed In the following slide, fix your eyes on the dot in the center of the flag

Smell