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52 Cards in this Set
- Front
- Back
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What is absolute threshold?
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min stimulation needed to detect a particular stimulation (such as sound) 50% of the time
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What is the absolute threshold for vision?
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candle flame seen from 30 miles on a clear, dark night
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What is the absolute threshold for hearing?
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tick of a watch from 20 ft in very quiet conditions
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What is the absolute threshold for smell?
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1 drop of perfume diffused throughout a three room apartment
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What is white light?
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light from sun all types of light waves
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What is dark adaptation?
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increases sensitivity of rods and cones in darkness
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What is light adaptation?
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decreased sensitivity of rods and cones in bright light
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What is happening when you see black?
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every color's wavelength is being absorbed
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What is additive color mixing?
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mixing lights of different wavelengths
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What are three basic colors that additive color mixing use?
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red, blue, and green
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What is subtractive color mixing?
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mixing pigments such as paint
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What is the Trichromatic Theory?
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cones pick up 3 basic colors when work with rods to show the other colors
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What are the 3 problems with the tricromatic theory?
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1 paint does not work the same way as color wavelengths
2 color blindness ( more common in men) 3 color after images |
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What is the Opponent-Process Theory?
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suggests that color perception is controlled by the activity of two opponent systems; a blue-yellow mechanism and a red-green mechanism since we can not perceive those color combinations
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What is timbre
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texture of sound
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What is pitch
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frequency of sound
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What is loudness of sound
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intensity
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What is the unit of measurement for loudness of sound
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decibel
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What the loudest decibel that can be heard that destroys feeling
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80 +
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What is Tinnitus
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constantly hearing a steady high-pitched hum
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What are the skin senses
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touch, temp, and pain
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What is the dermis
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outer layer of the skin
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How many receptors are there for touch or pressure
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7
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Describe specialized end bulbs functions
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designed for touch, have more than regular ones,
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What are basket cells
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receptors that wrap around the hair
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What are taxile discs
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they keep code information about touch
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What is the highest temp before brain damage can occur
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104
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average body temp
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98.8
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The body considers ______________ ______ warmth
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extreme cold
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What is the def of pain
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sensation of tissue damage
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There are receptors for ______ in all organs
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pain
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What is the function of pain gates
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they send info to the brain then they secrete a hormone (endorphins) then send it to a place of pain
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Men and Women have how many pain gates
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women-2 men- 1
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There are pain gates in the spinal cord that either _______ to permit ______ __________ or _____________ to ________ ________
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open pain signals closes prevent passage
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Acupuncture ___________ certain nerve endings.
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stimulates
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What are the 4 different types of taste buds
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1 sweet & fatty
2 salty 3 bitter 4 sour |
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What are the 3 main taste buds located?
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sour- sides of tongues
bitter- very back of the tongue salty- tip of the tongue |
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What does the sensory nerve fiber do
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processes taste
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How does taste work?
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food dissolves into silvia then goes into crevices between the papilliae then goes to the taste buds
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The sense of smell has a ______ ________ to the __________
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direct path; brain
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what are the 7 smell qualities
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resinous, floral, minty, ethereal, musky, acrid, putrid
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What are pheromones
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chemicals that communicate sexual or territorial signals
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Perception takes place in the _______ and is the process of _____________ and ___________
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brain; organizing and interpreting
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What is the first law of perceptual organization?
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Figure ground perception
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Figure ground perception is when the _______ is important and the ________________ is not
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figure; background
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What are the 2nd and 3rd law of perceptual organization?
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2nd- Principle of Proximity
3rd- Law of Continuity |
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What is and describe the 4th law of perceptual organization?
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Law of organization - similarity things are grouped together
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What is the 5th law?
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Laws of Closure- the brains tendency to fill in missing information
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What is an example of the law of closure?
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seeing figures in clouds
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How many perceptual constancies are there
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4 shape, size, color and consistency
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What is elevation
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higher on the horizontal plane
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What is monocular cues of depth perception
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depth cues that require one eye
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