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Utilization behavior
Utilization behavior (UB) is a type of neurobehavioral disorder that involves patients grabbing objects in view and starting the 'appropriate' behavior associated with it at an 'inappropriate' time.〔Ishihara, K., Nishino, H., Maki, T., Kawamura, M., & Murayama, S. (2002). Utilization behavior as a white matter disconnection syndrome. Cortex, 38(3), 379-387.〕 Utilization behavior patients have difficulty resisting the impulse to operate or manipulate objects which are in their visual field and within reach.〔Lhermitte, F. (1986) Human autonomy and the frontal lobes. Part II: Patient behavior in complex and social situations: the 'environmental dependency syndrome'. Ann. Neurol. 19, 335–343 〕 Characteristics of UB include unintentional, unconscious actions triggered by the immediate environment. The unpreventable excessive behavior has been linked to lesions in the frontal lobe. UB has also been referred to as "bilateral magnetic apraxia" and "hypermetamorphosis".〔Eslinger, P. (2002). The Anatomic Basis Of Utilization: A Shift From Frontal-Parietal To Intra-Frontal Mechanisms. Division of Neurology, 1-4.〕
==Background==
The patients who display utilization behavior tend to reach out and begin to automatically use objects in the visual field of their environment. This may not seem incorrect but the difference in action to a person without UB is that the "object-appropriate" action taken is performed at the inappropriate time. For example, a patient in a doctor's office sees a toothbrush and will involuntarily start brushing his teeth. This demonstrates the appropriate action (brushing) at the inappropriate time (office). This dysfunction of the frontal area causes the inappropriate motor responses to specific objects in the environment.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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