PSYCH 240 Study Guide - Quiz Guide: Edge Detection, Trichromacy, Dendrite
Document Summary
Common principles of sensory/perceptual systems: transduction - convert energy or chemicals to neural action potentials that the nervous system can make use of. Our senses must convert physical stimulus energy (e. g. , chemical molecules) into electrical changes in nerve receptor cells. **rods and cones the receptor cells for the visual system: they respond to certain wavelengths of light. Evolution: human"s eyes are positioned in a way that enhances our depth perception because humans are predators. Prey, however, have eyes on the side of their head for a wider view: humans have color vision because they are active in daytime o. Neural coding - code the stimulus for quantitative and qualitative. The stimulus input must be processed and coded for: intensity (strong/weak smell, bright/dim light, loud/soft sound, qualitative aspects (red/blue, foul/pleasant, flat/sharp) Color coding begins @ level of the receptors: interactivity in vision, the response in one receptor region depends upon how neighboring receptor regions are responding.
