PSY372H5 Lecture Notes - Lecture 2: Sense Of Balance, Optical Illusion, Nociception
Document Summary
Sensation conversion of physical properties of the world into a neural code: process that takes place in the sensory organs, vision, audition, tactile, olfaction and gustation. Perception the processing of sensory info into something that can meaningfully guide behaviour. 4. 2. 2 perception as inference: guessing the properties of the world that caused the sensory stimulation, stimulus is inherently ambiguous. 4. 3 the visual system: between 1/3 and of the cortex is involved in visual processing. Sensitive but requires less light than cones to be stimulated. Better for seeing under lower lighting conditions. Have reduced resolution so cannot make sharp details. Respond equally to different wavelength of light = colour-blind. Spread throughout the rest of the retina (periphery) and convey info about the part of the visual stimulus where you"re not looking directly: cones. Come in 3 different varieties that respond differently to different wavelengths of light: allows us to distinguish colours based on the relative activation.
