PSYB65H3 Chapter Notes - Chapter 8&9: Postcentral Gyrus, Auditory Cortex, Visual Cortex
Document Summary
Sensory receptors= specialized cells that transduce sensory energy neural activity. Receptors as energy filters designed to respond to a narrow band of energy within each modality energy spectrum. Color-blind= lacking receptors for part of the usual visual spectrum. 60% of men have one type of red receptor while the other 40% have another; many women have both. Filter sensory world to produce an idiosyncratic representation of reality. Vision= light is converted into chemical energy in the form of photoreceptors of the retina and then is converted into action potentials. Auditory system= air-pressure waves are converted into a number of forms of mechanical energy, which eventually activates the auditory receptors, which then produce action potentials. Somatosensory= mechanical energy activated mechanoreceptors which generate action potentials. Taste and olfaction= chemical molecules carried by air or contained in food fit themselves into receptors of various shapes to activate action potentials.
