Oct24

Dichromats

________: have deficient in one cone system, most commonly red /green but can also be blue /yellow.

Amplitude

________: quantifies the amount of compression and expansion of molecules in conducting medium, related to the perceptual experience of perceived loudness, measured in decibels.

Monochromats

________: are sensitive to black /white only.

Afterimages

________: an image in a different colour appears after a colour stimulus has been viewed for a prolonged period of time and then withdraw.

Screens

________ on most electronics emit light in the blue spectrum which reduces melatonin production.

Negative colour images

________ demonstrate opponent processes occurring somewhere in the visual system.

Neural impulses

________ flow from eye to thalamus to primary visual cortex in the occipital lobe.

Reitinotopy

________: two points that are close together on an image formed in the retina will also be processed in areas of cortex that are close together In other words, there is a reliable relationship between where simulation on the retina occurs and what part of the visual cortex processes signals related to stimulation at that retinal location.

Somatopy

________: in the somatic sensory cortex.

Feature detectors

________ are neurons that are turned on to respond most strongly to specific stimuli.

Trichromats

________: have normal colour vision with systems that are sensitive to red- green, yellow- blue, and black- white.

Frequency

________: refers to the number of cycles per second, related to the perceptual experience of pitch, humans can perceive sound in the range of 20- 20000 Hz at their peak approximately 20- 12000 for older individuals losing their hearing.

Dual process theory

________: combines elements of trichromatic and opponent proves theories, we have three cone types that are each maximally sensitive to three different wavelengths and opponent processes occur in gangliion cells and part of visual cortex.

visual cortex

The fovea has enlarged representation in the ________.

Young helmoltz trichromatic theory

________: emerged from observations that any colour can be created by mixing together varying quantities of blue, green, and red This theory proposed that there are three different types of colour receptors in the retina (three types of cones), corresponding to each of these three colours.

Young-helmoltz trichromatic theory

emerged from observations that any colour can be created by mixing together varying quantities of blue, green, and red This theory proposed that there are three different types of colour receptors in the retina (three types of cones), corresponding to each of these three colours

Additive colour theory

applies to mixing lights, colour perception of light is determined by what wavelengths are present or added

Subtractive colour theory

is different and applies to mixing paints colour perception of paints are determined by what wavelengths are absorbed or subtracted out (blue paint looks blue because it absorbs all wavelength expect for what we idenity as blue.)

The trichromatic theory

cannot explain the fact that people with red-green colour blindness should not be able to see yellow according to this theory because red+green= yellowyet they can

Afterimages

an image in a different colour appears after a colour stimulus has been viewed for a prolonged period of time and then withdraw

Opponent-process theory

in contrast to the trichromatic theory, this theory proposed that we have three cone types, each of which corresponds to two different wavelengths, one is blue or yellow, one is green or red, one is white or black

Dual-process theory

combines elements of trichromatic and opponent proves theories, we have three cone types that are each maximally sensitive to three different wavelengths and opponent processes occur in gangliion cells and part of visual cortex

Trichromats

have normal colour vision with systems that are sensitive to red-green, yellow-blue, and black-white

Dichromats

have deficient in one cone system, most commonly red/green but can also be blue/yellow

Monochromats

are sensitive to black/white only

Reitinotopy

two points that are close together on an image formed in the retina will also be processed in areas of cortex that are close together In other words, there is a reliable relationship between where simulation on the retina occurs and what part of the visual cortex processes signals related to stimulation at that retinal location

Somatopy

in the somatic sensory cortex

Frequency

refers to the number of cycles per second, related to the perceptual experience of pitch, humans can perceive sound in the range of 20-20000 Hz at their peak approximately 20-12000 for older individuals losing their hearing

Amplitude

quantifies the amount of compression and expansion of molecules in conducting medium, related to the perceptual experience of perceived loudness, measured in decibels