Perceptual Distortions (Chapter 9) Flashcards
perceptual distortions
an error in the judgement or the interpretation of sensory stimuli
fallibility
the quality of being prone to error or experiencing difficulties in judgment
visual illusions
is the perception of a visual stimulus that conflicts with how it is in physical reality
common sources of visual illusions
something in our external environment.
something physiological
something psychological
what is the muller lyre illusion
is the illusion of two equal length lines one line has arrowheads while the other line has feather tails, the line with the feathers tail is perceived as being longer than the line with arrowheads.
what is the Ames room illusion
is a trapezium shaped room one side is much higher and longer than the other when it is viewed through a peep hole it is perceived as being rectangular
agnosia
a disorder involving the loss or impairment of the ability to recognize familiar stimuli through the use of one or more senses, despite the senses functioning normally otherwise.
visual agnosia
is the loss or impairment of the ability to recognize visual stimuli
what is appreciative visual agnosia
appreciative visual agnosia is related to people who have lesions in the parietal and occipital lobes they are unable to, process or perceive certain stimuli, recognize stimulus, to draw or copy a drawing of a stimulus and unable to name the stimulus in the drawing
what is associated visual agnosia
is related to people that have lesions in the temporal lobe they are able to, process and perceive certain stimuli, draw or copy a drawing of a stimulus however they are unable to name the stimulus in the drawing and are also unable to translate perception into recognition.
prosopagnosia
involves an inability to recognize the faces of familiar people
some causes of agnosia
dementia
development disorder
overexposure to an environmental toxin (e.g. carbon monoxide)
stroke or traumatic brain injury
miraculin
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a protein found in the pulp of a miracle berry that can be used to modify how we perceive taste
supertasters
people that have a lower threshold for taste stimuli and a higher number of tastebuds, females are more likely to develop
factors that affect judgment of flavour
perceptual set
colour
texture