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Perception Quiz 1
Terms in this set (12)
Name and briefly describe the seven steps of the perceptual process, in order.
1.Distal stimulus (distance, the physical object)
2.Proximal stimulus (the light reflecting off the object into retina)
3.Receptor processes (rods and cones)
4.Neuro processes (brain processes info from eyes)
What is the principle of transformation?
stimuli and responses created by stimuli are transformed or changed between the environmental stimulus and perception.
What is the principle of representation?
everything a person perceives is based on representations of stimuli that are formed on the receptors, the resulting activity in the person's nervous system, not on direct contact of stimuli
What is the name of the process by which environmental energy is transformed into electrical signals?
Where are the primary receiving areas for vision, audition, and touch?
Vision : occipital lobe
Audition : temporal lobe
Touch : parietal lobe
What are the three major components of the seven-step perceptual process?
Stimulus, physiology, and behavior
What are the three relationships that are typically used to study the perceptual process?
Relationship A : stimulus/perception
Relationship B : stimulus/physiology
Relationship C : physiology/perception
What is the oblique effect, how has it been studied using the three relationships, and what has been found?
enhanced sensitivity to vertically and horizontally oriented visual stimuli compared to obliquely oriented (slanted) stimuli
Grating acuity, ferret brain, brain response
What is an absolute threshold?
the minimum stimulus energy necessary for an observer to detect a stimulus
A difference threshold?
the minimum difference that must exist between two stimuli before we can tell the difference between them
Describe how to measure an intensity threshold for an auditory tone using the methods of limits approach.
1.Tones with varying intensities presented (ascending or descending order)
2.Observer indicates yes or no to hearing the tone
3.Crossover point is recorded
4.Threshold = mean of crossover points
What are 5 examples that support the idea that there is not a one-to-one relationship between the physical and the perceptual
1.Face or vase shows us that physical stimuli can be perceptually ambiguous
2.Dark spots at the intersection of white lines shows us that not everything we see is physically there
3.We are blind to infrared and uv rays which shows us that humans can only detect a small portion of the electromagnetic spectrum
4.Black and white dress
5.Tasting how much tequila is in a margarita
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