PSYCH-UA 1 Lecture Notes - Lecture 10: Thalamus, Retina, Mach Bands
22 Mar 2016
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Document Summary
The passive perceiver: empiricism: philosophical view that argued our senses are passive. We simply receive information from the outside world. We can move around in the 3d world because our experience has taught us how to interpret the 2d proximal stimulus. Learning. distal stimulus: and object or event in the outside world proximal stimulus: the energies from the outside world that directly reach our sense organs. The active perceiver: perceiver does more than supplement the sensory input w associations. Categories must be in place before any perceptual experience so they are a part of our biological heritage. Fechner"s law: the observation that the strength of a sensation is proportional to the logarithm of physical stimulus intensity. S=klogi; s stands for psychological (subjective) magnitude, i is the physical intensity of the stimulus, and k is a constant whose value depends on the value of the weber fraction. This law does not hold up perfectly in all circumstances.
