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Exam 2 Key words.docx - Chapter 6 Key words 1 Sensation a...

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Chapter 6 Key words 1. Sensation a. The detection of information about our environmental context 2. Perception a. The interpretation of information about our environmental context 3. Psychophysics a. The measurable relationship between the physical qualities of sensory stimulus and the perception of that stimulus 4. Difference threshold / noticeable difference a. The minimum amount that a stimulus must change for a subject to detect a difference 5. Weber’s law a. The empirical principle that the just noticeable difference is a constant proportion of the initial stimulus 6. Absolute threshold a. The lowest intensity of a stimulus that a person can detect 50% of the time 7. Sensory receptors a. Specialized neurons that receive external stimuli 8. Sensory adaptation a. The natural adjustment of sensory receptors to reduce signals that are no longer meaningful 9. Multisensory integration a. Adaptive processing of the various sensory stimuli decoded by our brains as we interpret information from multiple sensory systems 10. Cross-modal stimuli a. Stimuli from two senses 11. Flavor a. The perception based on the convergence of cues from several senses based on vision smell taste and touch 12. Taste buds a. Small structures of soft tissue located on the tongue soft pallet and areas of the throat that contain receptors that detect salty, sweet, sour, bitter, umami 13. Superadditive neural response a. An exaggerated integrated response much stronger than any of its components 14. Additive response a. An integrated neural response that is proportionately smaller than a superaddative neural response 15. Subadditive neural response a. An integrated neural response that is even less exaggerated than an additive response 16. Multisensory neuron a. A nerve cell that responds to multiple senses, containing several receptive fields for different sensory 17. Receptive fields a. Sections in sensory neurons that receive information from a specific sensory area 18. McGurk effect a. The perceptual experience whereby slightly mismatched pairs of auditory and visual cues cause listeners report hearing something more consistent with their visual input
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19. Photoreceptors a. Specialized neurons that are sensitive to light 20. Adequate stimulus a. The type of physical energy that is required to cause a sensory nerve to respond affectively 21. Electromagnetic spectrum a. All possible wavelengths of electromagnetic radiation of which light is only a narrow band 22. Hue a. The perceived color or wavelength of a light stimulus 23. Brightness a. The perceived intensity of a light stimulus 24. Saturation a. The perceived purity of a light stimulus represented by the precision of the wavelength bandwidth of the visual output 25. Extraocular muscles a. The muscle around the eye that hold the eye in the optical socket 26. Optic nerve a. The bundle of axons emerging from the ganglion cells that exit the back of the eyeball 27. Pupil a. The portal to which light enters the eye 28. Iris a. The diaphragm that controls the size of the pupil of the eye 29. Cornea a.
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