Sensation and Perception. Sensation A process by which our sensory receptors and nervous system receive and represent stimulus energy. Senses are the physiological methods of perception
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Intensity of stimulusSensation Thresholds
About 30 million people have some form of hearing damage in the U.S. Can be caused by injury, infections, explosions, long-term exposure to loud noises (ipods!)
Traditionally, taste sensations consisted of sweet, salty, sour, and bitter tastes (taste buds). Receptors for a fifth taste have been named called “Umami”
Receptor cellsare located in taste buds
Taste buds are located in papillae on the tongue
Chemicals dissolve in saliva and activate receptors
When one sense affects another sense, sensory interaction takes place.
This is especially apparent with the interaction between smell and taste
The taste of a banana interacts with its smell and its texture on the tongue to produce flavor.