Akinetopsia Essay

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Akinetopsia Cerebral akinetopsia, also known as motion blindness, is a neuropsychological disorder in which a person cannot perceive motion in their visual field. In other words, a patient with this disorder has the inability to see moving objects. The subject although can see stationary objects without issue. In these individuals there is a change in brain structure, usually due to an injury, that disturbs the psychological process of understanding sensory information. Patients with akinetopsia struggle with many issues in their day to day life such as reaching for objects and catching objects. An interesting case study I found about a subject with Akinetopsia was that of L.M. She was a 43-year-old patient who arrived at the Neuropyschological Unit of the Max-Planck-Institute for Psychiatry in Munich, Germany in 1980. She had sustained brain damage two years prior and claimed she was no longer able to see movement. Although she could visualize objects at different locations, she was unable to find out what happened to them between locations when they were moving (Humphreys p.3). LM described pouring a cup of tea or coffee difficult because “the fluid appeared to be frozen, like a glacier”(LM). She did not know when to stop pouring for she could not perceive the movement of fluid rising. We observed an example of this phenomenon in a video clip shown during class as well. LM complained of having trouble following conversations and felt insecure when more than two people were walking around in a room. LM also described crossing the street and driving a car to be very difficult. Aside from her functional impairments, LM had normal intellectual abilities such as memory and planning. Most of what is known about akinetopsia was learned through the case study of
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