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Questions and Answers
What is the minimum amount of stimulus required for a person to notice a change, known as?
What is the minimum amount of stimulus required for a person to notice a change, known as?
- Perceptual Expectancy
- Active Processing
- Selective Attention
- Difference Threshold (correct)
Which theory explains that naming colors requires more attention than reading words, causing interference?
Which theory explains that naming colors requires more attention than reading words, causing interference?
- Threshold Theory
- Passive Process Theory
- Perceptual Expectancy Theory
- Speed of Processing Theory (correct)
In perception, what does the Detection of physical energy emitted or reflected by physical objects refer to?
In perception, what does the Detection of physical energy emitted or reflected by physical objects refer to?
- Sensory Energy Absorption (correct)
- Olfaction Stimulation
- Color Perception
- Sound Waves Absorption
What is the process of discriminating between what is important and what is irrelevant influenced by?
What is the process of discriminating between what is important and what is irrelevant influenced by?
Which type of processing is an active process translated into psychological experience?
Which type of processing is an active process translated into psychological experience?
What does the Two theories that may explain the Stroop effect state about interference in color naming and word reading?
What does the Two theories that may explain the Stroop effect state about interference in color naming and word reading?
What is the function of the Fovea?
What is the function of the Fovea?
Which part of the tongue contains taste buds?
Which part of the tongue contains taste buds?
What is the main function of the cochlea in the ear?
What is the main function of the cochlea in the ear?
What are rods and cones?
What are rods and cones?
Based on the Trichromatic Theory, how do humans perceive color?
Based on the Trichromatic Theory, how do humans perceive color?
What do chemical molecules dissolved in tongue fluid impact?
What do chemical molecules dissolved in tongue fluid impact?
What theory suggests that color perception relies on the reception of antagonistic colors?
What theory suggests that color perception relies on the reception of antagonistic colors?
What causes cone receptors to become fatigued?
What causes cone receptors to become fatigued?
What type of color blindness results in total inability to see colors?
What type of color blindness results in total inability to see colors?
In the context of color vision, what does the Trichromatic Theory propose?
In the context of color vision, what does the Trichromatic Theory propose?
What theory assumes that the visual system treats color pairs as opposing?
What theory assumes that the visual system treats color pairs as opposing?
What is responsible for sound production according to the text?
What is responsible for sound production according to the text?
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Study Notes
Electromagnetic Energy and Color Perception
- Electromagnetic energy varies in wavelength, with visible light ranging from 400-700 nanometers
- Color perception relies on the opponent-process theory, where one color pair suppresses the other
- Long-standing exposure to a color causes cone receptors to become fatigued, while opposing color receptors are fresh and can send strong signals
Trichromatic Theory of Color Vision
- Humans have three types of cones that respond to red, green, and blue light
- The trichromatic theory states that we can receive three types of colors and the ratio of each color to the other determines the exact color we see
- Trichromat: normal color vision
- Monochromat: totally color blind
- Dichromat: partial color blindness
Sound and Hearing
- Sound results from the movement of air molecules in a particular wave pattern
- Sound waves vary in frequency (pitch) and amplitude (loudness)
Perception and Sensation
- Perception is the process of discriminating between what is important and irrelevant, influenced by motivation and past experiences
- Sensation is the detection of physical energy emitted or reflected by physical objects
- The process of sensation involves sensory organs absorbing energy and sending it to the brain
Anatomy of the Eye
- The eye captures light waves and focuses them on receptors at the back of the eyeball
- The retina contains light-sensitive rods and cones, responsible for vision
- The fovea provides sharpest vision, while the blind spot has no receptors
Sensory Adaptation and Threshold
- Sensory adaptation: decreased sensitivity due to repeated or constant stimulation
- Threshold: the minimum amount of stimulus required to produce a noticeable change
- Difference threshold (just noticeable difference): the minimum amount of change needed to produce a noticeable change
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