PSYC 1010 Chapter Notes - Chapter 4: Capsaicin, Sensory System, Ganglion Cell

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Jennifer Steeves

Document Summary

Sensation and perception: sensation the processes of sensory responding and of the sensory receiving areas of the brain, perception mental operations that organize sensations into meaningful patterns, e. g. Sensation: image on the back of the eye ; perception: a pencil: sensory receptors transduce physical stimulus into neural signal, sensory neurons - carry impulses to the cns (usually via the thalamus, sensory areas. The visual system: the stimulus is visible light. Vary in: amplitude (luminance) which affects brightness perceived intensity of the target, wavelength which affects colour (hue) Shorter wavelength = higher frequency (violet: purity which affects saturation. Degree of whiteness in target (pale/vivid or in between) How the eye is like a camera: uses light, goes through pupil. Like the camera aperture: focused by the cornea and the lens (70% focusing is done by the cornea) Like the camera lens: focused on the retina. Retinal image is flipped up-down and left-right.