PSY 12000 Lecture Notes - Lecture 6: Necker Cube, Sensory Neuron, Absolute Threshold
20 Sep 2016
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Sense organs: organs that receive stimuli: sensory receptor cell specialized calls within the sense organs that send neural impulses to the brain. Sensation vs. perception: sensation info. coming in to your brain, perception processes used to arrive at a meaningful interpretation of sensations, ex. Physical to psychological: messages originate in the physical world but our conscious experience of those messages is influenced by expectations, sensory systems designed to detect changes that matter. Absolute threshold- smallest magnitude of a stimulus that can be detected. Difference threshold- smallest detectable difference between two stimuli. Weber"s law: the difference threshold between two things depends on the strength of the original stimulus, the bigger the changes must be in order for them to be noticed . Depends on how much you started with. The same absolute increase in the magnitude of a physical stimulus won"t always lead to an equivalent increase in the psychological experience.
