Sensation & Perception Part 3 Flashcards
Located in the visual cortex of the brain
Feature Detectors
Nerve cells that selectively response to specific visual features, like movement, shape, or angle
Feature Detectors
The basis for visual information processing
Feature Detectors
Information processing in which several aspects of a stimulus, like light or sound are processed at the same time
Parallel Processing
Three Color Theory
Young-Helmholtz Trichromatic Theory
Retina contains what 3 color receptors
Red, Green, Blue-Sensitive
When you have less short wave cones which is why you see red, yellow, and green better than blue
Color Blindness
Color vision depends on pairs of opposing retinal processing in the brain
Opponent Processing Theory
In the Opponent Processing Theory, match the colors
Red:
Blue:
Black
Green
Yellow
White
Perception that familiar objects have consistent color despite changes in illumination that shift the wavelengths they reflect
Color Constancy
Sense of hearing
Audition
Sound that is determined by its frequency or number of complete wavelengths that can pass a point in time
Pitch
Directly related to wavelength
Frequency
The longer the waves, they produce what type of picth?
Lower Pitch
The shorter the waves, the produce what type of pitch?
Higher Pitch
Affects loudness meaning how much pressure is being forced through air
Amplitude
Measured in decibels (dB)
Amplitude
Number of wavelength cycles in a unit of time
Frequency
Measured by hertz (Hz)
Frequency
Funky shaped outer ear
Pinna
Used to catch sound and direct it into the ear
Auditory Canal
Also called the eardrum
Tympanic Membrane
Vibrates when sound hits it
Tympanic Membrane
Chamber between the eardrum and cochlea containing the ossicles of the three bones
Middle Ear
Name the 3 bones:
- Hammer
- Anvil
- Stirrup
Contains the semicircular canals and the cochlea, which includes the recpetors and transducer sound energy into neural impulses
Inner Ear
Contains vestibular sac, making the inner ear also important in balance
Inner Ear
Coiled, bony, fluid-filled tube of the inner ear where the transduction of sound waves into neural impulses occur (snail shape)
Cochlea
Inner surface of the cochlea that resonates the different sounds in different locations
Basilar Membrane
Called hair cells, covers the basilar membrane
Organ of Corti
When the fluid of the cochlea moves, the hair cells move to send signals to the basilar membrane and on to the auditory nerve
Organ of Corti
States we hear different pitches because sound waves of various frequencies trigger activity at different places on the cochlea’s basilar membrane
Place Theory
Maintains that the place of maximum vibration along the cochlea’s membrane is the basis of pitch disrimination
Place Theory
Presume that the rate/frequency of nerve impulse in the auditory nerve matches the frequency of a tone, which gives us pitch
Frequency Theory
