PSY100H1 Chapter 5: Chapter 5 - Sensation, Perception, Attention
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PSY100H1 Full Course Notes
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How do we sense our worlds: sensor y organs convert forms of physical energy into signals that the brain can understand, adaptive, provides information on threats and food varies between animals depending on their adaptive challenges. Higher frequency means brighter or louder: qualitative colour, taste, smell different sensory receptors respond to different qualities of a stimulus. What are the basic sensory processes: only the sensory neurons respond to anything from the outside world, how stimuli are detected and sent to the brain for the five senses. Light passes through cornea, a thick, transparent outer layer, and is refracted. What are the basic perceptual processes: perceptual process makes millions of calculations to produce a coherent experience, most computations do not reach conscious awareness, only important new outcomes. How does attention help the brain manage perceptions: constant input from enormous number of sources, attention how the brain selects which sensory stimuli to discard and which to pass along.
