17 Questions
How many different color sensitive elements does the human eye contain according to the Trichromatic theory?
3 (Blue, Green, and Red)
What refers to the automatic adjustments of the eye to focus light on the retina from objects at different distances?
Farsightedness
Which theory can account for negative color afterimages?
Opponent-Process theory
What type of deafness results from damage to the cochlea, hair cells, or auditory nerve?
Nerve Deafness
What property of sound determines the perceived pitch?
Wavelength
Which type of loss results from problems transferring sound waves to the inner ear?
Conduction deafness
How many hues are humans able to discriminate according to the text?
7 million
What term refers to the lowest level of stimulation that a person can consciously detect 50 percent of the time the stimulation is present?
Absolute threshold
Which term describes the degree of difference that must exist between two stimuli before the difference is detected?
Just noticeable difference
What refers to the fact that repeated or constant stimulation decreases the number of sensory messages sent to the brain, causing decreased sensation?
Sensory adaptation
Which term describes the tendency of sensory receptors to become less responsive to unchanging stimuli?
Habituation
What is the term for the process of transducing sensory energy into nerve impulses in sensory organs?
Neural impulse
Which component carries nerve impulses from sensory organs to the brain?
Central nervous system
What aspect of sensory systems helps detect changes within the environment?
Modification of sensation
'Sensory adaptation' refers to which of the following?
'Repeated or constant stimulation decreases the number of sensory messages sent to the brain.'
'Habituation' is best described as:
'Tendency of the brain to stop attending to constant, unchanging information.'
'Difference thresholds' are associated with:
'The degree of difference that must exist between two stimuli before the difference is detected.'
Test your knowledge on sensory thresholds, including absolute threshold and difference thresholds in sensory perception. Learn about how sensory organs contain receptors that transduce sensory energy into nerve impulses carried to the brain.
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