PSYCH 4150 Lecture Notes - Lecture 10: Gustav Fechner, Cosmic Consciousness, Mathematical Psychology
Document Summary
Muller: law of specific nerve energies. Helmholtz: secondary qualities have to do with areas of the brain, what else. Scientific study of the relationship between the stimulus (specified in physical terms) and the sensations and perceptions evoked by the stimulus. Just noticeable difference (jnd: physiologist/ psychophysicist , was able to measure subjective intensities of stimulation. This is a major breakthrough for psychology: focused on tactile sense. Examined at what point differences in stimuli resulted in changes in perception. The jnd: incorporated mathematics to specify relationship between stimulus and perception (not a one-to-one relationship) This is a way to quantify a physical stimulus into a mental stimulation: know why the jnd important and how it applies to anything. With sound, at what point in the physical stimulus do you notice a change in pitch. The pitches would have to surpass the jnd for us to notice the physical change in two similar pitches. Know why all of this is important.
