PS262 : PS262Senses.docx
Document Summary
The only way information from the outside world gets to the brain. We haven"t been able to build computers that do object recognition as well as humans. Stimulus: thing that impinges your senses, stimulates receptors. Electricity: electrical signals created by receptors and sent to the brain. Experience and action: our goal to perceive, recognize and react to stimuli. Sensory cue: signal that can be extracted from sensory input and indicates state of some property in the world. Transduction: transformation of one from of energy to another form ex. Vision light energy becomes electrical signals on receptors. Transmission: signals activate other neurons to reach the brain. Neural processing: interactions between neurons send a signal that represents the stimulus to the brain. Recognition: ability to place the representation in a category. Localization of function (where in brain particular info is processed) Psychophysical approach: fechner finds relationship between stimulus and action, use of quantitative methods to measure relationships between stimulus.
