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senses
advanced terms related to human senses
| Term | Definition |
|---|---|
| weber's law | one of the basics laws of psychophysics that just a noticeable difference is in constant proportion to the intensity of an intial stimulus |
| difference threshold | the smallest level of stimulation required to sense that a change in stimulation has occured |
| just noticeable difference | the mininum stimulation required to detect the difference between two stimuli |
| retina | the part of the eye that converts the electromagentic enegry of light into useful information for the brain. |
| rods | thin cylindrical receptor cells in the retina that are highly senstive to light |
| cones | cone shaped light senstive receptor cells in the retina are responsible for sharp focus and color perception particulary in bright light |
| optic nerve | a bundle of ganglion axons that carry visual information |
| feature detection | the activation of neurons in the cortex by visual stimuli of specific shapes or pattern |
| trichromatic theory of color vision | the theory that there are three kinds of cones in the retina each of which responds primilary to a specific range of wavelengths |
| opponet process theory of color vision | the theory that receptor cells are linked in pairs working in oppostion to each other |
| eardrum | the part of the ear that vibrates when sound waves hit it |
| sound | the movement of air molecules brought by the vibration of an object |
| cochlea | a coiled tube in the ear filled with fluid that vibrates in response to sound |
| basilar membrance | a vibrating structure that runs through the center of the cochlea dividing into an upper and a lower chamber and containig sense receptors for sound |
| hair cells | tiny cells covering the basilar membrance that when bent by vibrations entering the chohela transmit neural messages to the brain |
| place theory of hearing | the theory that different areas of the basilar membrane respond to different frequiences |
| frequency theory of hearing | the theory that the entire basilar membrance acts like a microphone vibrating as a whole in response to a sound |
| semicircular canals | three tubelike structures of the inner ear containing fluid that sloshes through them when the head moves signaling rotional or angular movements to the ar |
| otoliths | tiny morion senstive crystals within the semicurlar canals that sense body accerlation |
| skin senses | the senses that include touch pressure temperature and pain |
| gate control theory of pain | the theroy that patircular nerve receptors lead to specific areas of the brain related to the brain |
| gesalt laws of organization | a series of principles that describe how we organize bits and pieces of information into meaningful pieces |
| feature analysis | a theory of perception according to which we perceive a shape pattern object or scene by reacting first to the individual elements that make it up |
| top down processing | perception that is guided by higher level knowledge experience expecations and motivations |
| bottom up processing | perecption that constists of recoginizg and processing information about the individual componets of the stimuli |
| visual illusions | physical stimuli that consistenly produce errors in perception |
| What is a phisical property? | A characteristic of a substance that can chnage without a new substance being formed. |
Created by:
missionfromgod2001
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