PSYC 2000 Chapter : Psych 2000 Ch. 3 Notes
Document Summary
Sensory neurons in your fingers detect a hot stimulus. Sensation is a feeling or influence that affects our senses, perception is how we are affected by a sensation. William james said that our previous conceptions of something affect our perception of an object. His quote is part of the reason why structuralism was criticized. Cornea and lens help to focus the light. Retina: contains special cells that transform light to nerve impulses called rods and cones. Optic nerve: relays messages to optic chiasm, to the optic tract, to the thalamus, to the occipital lob where visual processing area is located. Can take 20-30 minutes to fully adapt to darkness. Two main theories (both are supported at different points in the process): The visible light spectrum is relatively small compared to other wavelengths present (gamma rays, radio waves, x rays, etc. ) How the sun sees you -sunscreen and skin video.
