Explain sensation
the process of detecting physical energy (a stimulus) from the environment and converting it into neural signals
Explain percpetion
the process of interpreting our sensations
Why can we detect only visible light?
because of the receptors in our eyes only detect these
Describe a photon
a tiny particle of light or electromagnetic radiation
Explain transduction
the process by which stimulus energy is converted into neural impulses
Explain the difference between rods and cones
Rods - more of them, periphery, high sensitivity in dim light, not as sensitive to color, not detailed sensitive
Cones - less of them, center, low sensitivity to dim light, is color sensitive, and sensitive to detail
What are the photoreceptors used in transduction?
cones and rods
Explain the optic nerve
carries neural impulses from the eye to the brain
Explain the blindspot
point where the optic nerve leaves the eye because there are no receptor cells located there
Explain the difference between the optic nerve and the optic tract
Optic nerve - outside of the brain
Optic tract - inside of the brain
Explain phototransduction
the process by which light energy is converted into electrical (neural) signals in the photoreceptors of the retina and uses photons
Explain visual agnosia
inability to recognize visual forms
What is the fovea?
central point in the retina around which the eye’s cones cluster
