Sensation: VIsion

Transduction

Turning sensation into neural signals.

Retina

Captures the image and turns light into neural signals

Rods

Receptors for dim light

Cones

Receptors for color vision and detail

Fovea

Central retina responsible for sharp central vision

Blind spot

In the retina where the optic nerve leave the eye

Ganglion Cells

Neurons that receive visual information from rods and cones and moves to the optic nerve

Lens

Transparent structure focuses light onto retina

Accommodation

Eye lens changes focus shape

Near sighted

See close, blurry far away.

Farsighted

Can see far objects clearly

Trichromatic Theory

Color vision is based on 3 types of cone receptions

Opponent-process theory

Color vision is based on pairs of opposing color processes

Afterimages

Opposite colors seen after staring.

Dichromatism

Seeing only two primary colors.

Monochromatism

Unconsciously responding to visual stimuli.

Blindsight

Inability to recognize familiar faces