Utilization behavior: Difference between revisions

Revision as of 20:41, 27 May 2023

Revision as of 21:58, 21 September 2023

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{{Short description|Neurobehavioral phenomena involving irresistible usage of objects in view}}

'''Utilization behavior''' ('''UB''') is a type of neurobehavioral phenomena that involves someone grabbing objects in view and starting the 'appropriate' behavior associated with it at an 'inappropriate' time.<ref name=" Ishihara">Ishihara, K., Nishino, H., Maki, T., Kawamura, M., & Murayama, S. (2012). Utilization behavior as a white matter disconnection syndrome. Cortex, 38(3), 379-387.</ref> UtilizationPatients behaviorexhibiting peopleutilization behavior have difficulty resisting the [[impulse (psychology)|impulse]] to operate or manipulate objects which are in their [[visual field]] and within reach.<ref>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 </ref> Characteristics of UB include unintentional, unconscious actions triggered by the immediate environment. The unpreventable excessive behavior has been linked to [[lesion]]s in the [[frontal lobe]]. UB has also been referred to as "bilateral magnetic apraxia" and "hypermetamorphosis".<ref name=" Eslinger">Eslinger, P. (2002). The Anatomic Basis Of Utilization: A Shift From Frontal-Parietal To Intra-Frontal Mechanisms. Division of Neurology, 1-4.</ref>

==Background==

The peopleIndividuals 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 person will be shown a pair of glasses and automatically put them on. This demonstrates the appropriate action at the "inappropriate" time. This causes the inappropriate motor responses to specific objects in the environment.

==Symptoms==

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====Lhermitte (1983)====

[[Jean Lhermitte]] first coined the term ''Utilization Behavior'' (UB). He observed six patients with [[unilateral]] and [[wikt:bilateral|bilateral]] lesions in the frontal lobe while the patients were enticed to grab objects. The patients with the frontal lobe lesions grasped the objects and started to use them appropriately even if it was not the appropriate time. Lhermitte used this study to attribute UB to damage of the orbital frontal structures and the [[caudate nuclei]].<ref name="Lhermitte">Lhermitte, F. (1983). Utilization behavior and its relation to lesions of the frontal lobes. Brain 106: 237–255.</ref> ''[[#Related disorders|Imitation Behavior]]'' (IB) has been studied by Lhermitte et al. in conjunction with UB which showed an imbalance between the dependence on and independence from external stimuli. It was thought that UB was an imbalance in the frontal and [[parietal lobes]], but the study demonstrated that only damage to the frontal lobe affects UB as patients with damage to both areas did not demonstrate UB or IB.<ref name="Lhermitte"/>

====Shallice et al. (1989)====

Tim Shallice et al. believed that Lhermitte's experiments led the patients to perform the behaviors that they thought were expected of them as the researchers either placed the objects in the patients hands or enticed them to pick up the objects. Shallice performed two procedures, Lhermitte's experiment ("induced UB") and an 'incidental' which included a [[neurological examination]] while objects that could elicit UB were present. 23 patients were found to have symptoms of UB.<ref name="Shallice">Shallice, T., Burgess, P. W., Schon, F., and Baxter, D. M. (1989). The

origins of utilization behaviour. Brain 112: 1587–1598.</ref>