WordNet

a wild delusion (especially one induced by a hallucinogenic drug) (同)freak_out
confusion (usually transient) about where you are and how to proceed; uncertainty as to direction; "his disorientation was the result of inattention"
disorder resulting from a failure to behave predictably; "the army retreated in confusion"
a mistake that results from taking one thing to be another; "he changed his name in order to avoid confusion with the notorious outlaw" (同)mix-up
an act causing a disorderly combination of elements with identities lost and distinctions blended; "the confusion of tongues at the Tower of Babel"
a feeling of embarrassment that leaves you confused (同)discombobulation
a mental state characterized by a lack of clear and orderly thought and behavior; "a confusion of impressions" (同)mental_confusion, confusedness, muddiness, disarray

PrepTutorEJDIC

方向感覚を失うこと / 混迷
『混乱』,乱雑(disorder) / (…と…との)混同《+『of』+『名』+『with』+『名』》 / 当惑,ろうばい

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/01/23 16:52:27」(JST)

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Orientation is a function of the mind involving awareness of three dimensions: time, place and person.^[1] Problems with orientation lead to disorientation, and can be due to various conditions, from delirium to intoxication. Typically, disorientation is first in time, then in place and finally in person.

The exact cerebral region involved in orientation is uncertain, but lesions of the brain stem and the cerebral hemispheres have been reported to cause disorientation, suggesting that they act together in maintaining awareness and its subfunction of orientation.

Disorientation

Disorientation is the opposite of orientation. It is a cognitive disability in which the senses of time, direction, and recognition of people and places become difficult to distinguish. ^[2]

Causes of Mental Disorientation

Disorientation can occur in healthy young adults as well as in the elderly or ill person. While exercising, if a person becomes dehydrated as a result of over-exertion he or she may become disoriented to the time or place. While exercising the body may not be able to supply enough oxygen to the brain fast enough. ^[3]

References

^ Berrios G E (1982) Disorientation States in Psychiatry. Comprehensive Psychiatry 23: 479-491
^ Isaac M., Janca A., Sartious N., 1994.ICD-10 Symptom Glossery For Mental Disorders,10th ed. WHO.
^ branch, solomon. "What Causes Disorientation During Exercise". Livestrong.com. Demand Media Inc. http://www.livestrong.com/article/477563-. Retrieved 29 September 2011.

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English Journal

Simple arithmetic development in school age: The coactivation and selection of arithmetic facts.

Megías P1, Macizo P2.
Journal of experimental child psychology.J Exp Child Psychol.2015 Oct;138:88-105. doi: 10.1016/j.jecp.2015.04.010. Epub 2015 May 30.
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Finding my own way: an fMRI single case study of a subject with developmental topographical disorientation.

Nemmi F1, Bianchini F, Piras F, Péran P, Palermo L, Piccardi L, Sabatini U, Guariglia C.
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An experimental re-examination of the inferential confusion hypothesis of obsessive-compulsive doubt.

Gangemi A1, Mancini F2, Dar R3.
Journal of behavior therapy and experimental psychiatry.J Behav Ther Exp Psychiatry.2015 Sep;48:90-7. doi: 10.1016/j.jbtep.2015.02.008. Epub 2015 Mar 2.
BACKGROUND AND OBJECTIVES: The inferential confusion hypothesis postulates that obsessive doubt is perpetuated by a subjective form of reasoning characterized primarily by a distrust of reality and an overreliance on imagined possibilities. However, experimental evidence for this hypothesis may be c
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Driving simulator evaluation of drivers' response to intersections with dynamic use of exit-lanes for left-turn.

Zhao J1, Yun M2, Zhang HM3, Yang X4.
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With the worsening of urban traffic congestion in large cities around the world, researchers have been looking for unconventional designs and/or controls to squeeze more capacity out of intersections, the most common bottlenecks of the road network. One of these innovative intersection designs, know
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Japanese Journal

Photophoresis : a Forgotten Force??

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Ophthalmoplegia and Flaccid Paraplegia in a Patient with Anti-NMDA Receptor Encephalitis: A Case Report and Literature Review

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