WordNet

fail to attend to; "he neglects his children"
the state of something that has been unused and neglected; "the house was in a terrible state of neglect" (同)disuse
give little or no attention to; "Disregard the errors" (同)ignore, disregard
leave undone or leave out; "How could I miss that typo?"; "The workers on the conveyor belt miss one out of ten" (同)pretermit, omit, drop, miss, leave out, overlook, overleap
lacking a caretaker; "a neglected child"; "many casualties were lying unattended" (同)unattended

PrepTutorEJDIC

…‘を'『無視する』,かまわない,ほっておく / (特に不注意で)…‘を'怠る』,忘れる(disregard) / (…の)『無視』,怠慢,(…を)ほったらかしにすること《+『of』+『名』》 / 無視(放置)されていること(状態)
無視された,顧みられない

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/02/12 23:30:17」(JST)

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Hemispatial neglect, also called hemiagnosia, hemineglect, unilateral neglect, spatial neglect, contralateral neglect, unilateral visual inattention,^[1] hemi-inattention,^[1] neglect syndrome or contralateral hemispatialagnosia is a neuropsychological condition in which, after damage to one hemisphere of the brain is sustained, a deficit in attention to and awareness of one side of space is observed. It is defined by the inability of a person to process and perceive stimuli on one side of the body or environment, where that inability is not due to a lack of sensation.^[1] Hemispatial neglect is very commonly contralateral to the damaged hemisphere, but instances of ipsilesional neglect (on the same side as the lesion) have been reported.^[2]

Presentation

Hemispatial neglect results most commonly from brain injury to the right cerebral hemisphere, causing visual neglect of the left-hand side of space. Right-sided spatial neglect is rare because there is redundant processing of the right space by both the left and right cerebral hemispheres, whereas in most left-dominant brains the left space is only processed by the right cerebral hemisphere. Although it most strikingly affects visual perception ('visual neglect'), neglect in other forms of perception can also be found, either alone or in combination with visual neglect.

For example, a stroke affecting the right parietal lobe of the brain can lead to neglect for the left side of the visual field, causing a patient with neglect to behave as if the left side of sensory space is nonexistent (although they can still turn left). In an extreme case, a patient with neglect might fail to eat the food on the left half of their plate, even though they complain of being hungry. If someone with neglect is asked to draw a clock, their drawing might show only the numbers 12 to 6, or all 12 numbers might be on one half of the clock face with the other half distorted or blank. Neglect patients may also ignore the contralesional side of their body; for instance, they might shave or appy make-up only to the non-neglected side. These patients may frequently collide with objects or structures such as door frames on the side being neglected.^[1]

Neglect may also present as a delusional form, where the patient denies ownership of a limb or an entire side of the body. Since this delusion often occurs alone, without the accompaniment of other delusions, it is often labeled as a monothematic delusion.

Neglect not only affects present sensation but memory and recall perception as well. A patient suffering from neglect may also, when asked to recall a memory of a certain object and then draw said object, draw only half of the object. It is unclear, however, if this is due to a perceptive deficit of the memory (to the patient having lost pieces of spatial information of the memory) or whether the information within the memory is whole and intact but simply being ignored, the same way portions of a physical object in the patient's presence would be ignored.

Some forms of neglect may also be very mild -- for example, in a condition called extinction where competition from the ipsilesional stimulus impedes perception of the contralesional stimulus. These patients, when asked to fixate on the examiner's nose, can detect fingers being wiggled on the affected side. If the examiner were to wiggle his or her fingers on both the affected and unaffected sides of the patient, the patient will report seeing movement only on the ipsilesional side.^[3]

Assessing Neglect

In order to assess not only the type but also the severity of neglect, doctors employ a variety of tests, most of which are carried out at the patient’s bedside. Perhaps one of the most-used and quickest is the line bisection. In this test, a line a few inches long is drawn on a piece of paper and the patient is then asked to dissect the line at the midpoint. Patients exhibiting, for example, left-sided neglect will exhibit a rightward deviation of the line's true midpoint.^[3] Another widely used test is the line cancellation test. Here a patient is presented with a piece of paper that has various lines scattered across it and is asked to mark each of the lines. Patients who exhibit left-sided neglect will completely ignore all lines on the left side of the paper.^[3] Visual neglect can also be assessed by having the patient draw a copy of a picture with which they are presented. If the patient is asked to draw a complex picture they may neglect the entire contralesional side of the picture. If asked to draw an individual object, the patient will not draw the contralesional side of that object.^[4]A patient may also be asked to read a page out of a book. The patient will be unable to orient their eyes to the left margin and will begin reading the page from the center. Presenting a single word to a patient will result in the patient either reading only the ipsilesional part of the word or replacing the part they cannot see with a logical substitute. For example, if they are presented with the word "peanut", they may read “nut” or say “walnut.”^[4]

Causes

Brain areas in the parietal and frontal lobes are associated with the deployment of attention (internally, or through eye movements, head turns or limb reaches) into contralateral space. Neglect is most closely related to damage to the temporo-parietal junction and posterior parietal cortex.^[5] The lack of attention to the left side of space can manifest in the visual, auditory, proprioceptive, and olfactory domains. Although hemispatial neglect often manifests as a sensory deficit (and is frequently co-morbid with sensory deficit), it is essentially a failure to pay sufficient attention to sensory input.

Although hemispatial neglect has been identified following left hemisphere damage (resulting in the neglect of the right side of space), it is most common after damage to the right hemisphere. This disparity is thought to reflect the fact that the right hemisphere of the brain is specialized for spatial perception and memory, whereas the left hemisphere is specialized for language - there is redundant processing of the right visual fields by both hemispheres. Hence the right hemisphere is able to compensate for the loss of left hemisphere function, but not vice versa.^[6] Neglect is not to be confused with hemianopsia. Hemianopsia arises from damage to the primary visual pathways cutting off the input to the cerebral hemispheres from the retinas. Neglect is damage to the processing areas. The cerebral hemispheres receive the input, but there is an error in the processing that is not well understood.

Varieties

Neglect is a heterogenous disorder that manifests itself radically differently in different patients. No single mechanism can account for these different manifestations.^[7] A vast array of impaired mechanisms are found in neglect. These mechanisms alone would not cause neglect.^[4] The complexity of attention alone—just one of several mechanisms that may interact—has generated multiple competing hypothetical explanations of neglect. So it is not surprising that it has proven difficult to assign particular presentations of neglect to specific neuroanatomical loci. Despite such limitations, we may loosely describe unilateral neglect with four overlapping variables: type, range, axis, and orientation.

Type

Types of hemispatial neglect are broadly divided into disorders of input and disorders of output. The neglect of input, or “inattention,” includes ignoring contralesional sights, sounds, smells, or tactile stimuli. Surprisingly, this inattention can even apply to imagined stimuli. In what’s termed “representational neglect,” patients may ignore the left side of memories, dreams, and hallucinations.

Output neglect includes motor and pre-motor deficits. A patient with motor neglect does not use a contralesional limb despite the neuromuscular ability to do so. One with pre-motor neglect, or directional hypokinesia, can move unaffected limbs ably in ipsilateral space but have difficulty directing them into contralesional space. Thus a patient with pre-motor neglect may struggle to grasp an object on the left side even when using the unaffected right arm.

Range

Hemispatial neglect can have a wide range in terms of what the patient neglects. The first range of neglect, commonly referred to as “egocentric” neglect, is found in patients who neglect their own body or personal space.^[8] These patients tend to neglect the opposite side of their lesion, based on the midline of the body, head, or retina.^[9] For example, in a gap detection test, subjects with egocentric hemispatial neglect on the right side often make errors on the far right side of the page, as they are neglecting the space in their right visual field.^[10]

The next range of neglect is “allocentric” neglect, where individuals neglect either their peri-personal or extrapersonal space. Peri-personal space refers to the space within the patient’s normal reach, whereas extrapersonal space refers to the objects/environment beyond the body’s current contact or reaching ability.^[8] Patients with allocentric neglect tend to neglect the contralesional side of individual items, regardless of where they appear with respect to the viewer.^[9] For example, In the same gap detection test mentioned above, subjects with allocentric hemispatial neglect on the right side will make errors on all areas of the page, specifically neglecting the right side of each individual item.^[10]

This differentiation is significant because the majority of assessment measures test only for neglect within the reaching, or peri-personal, range. But a patient who passes a standard paper-and-pencil test of neglect may nonetheless ignore a left arm or not notice distant objects on the left side of the room.

In cases of somatoparaphrenia, which may be caused by personal neglect, patients deny ownership of contralesional limbs. Sacks (1985) described a patient who fell out of bed after pushing out what he perceived to be the severed leg of a cadaver that the staff had hidden under his blanket. Patients may say things like, “I don’t know whose hand that is, but they’d better get my ring off!” or, “This is a fake arm someone put on me. I sent my daughter to find my real one.”

Axis

Most tests for neglect look for rightward or leftward errors. But patients may also neglect stimuli on one side of a horizontal or radial axis. For example, when asked to circle all the stars on a printed page, they may locate targets on both the left and right sides of the page while ignoring those across the top or bottom.

In a recent study, researchers asked patients with left neglect to project their midline with a neon bulb and found that they tended to point it straight ahead but position it rightward of their true midline. This shift may account for the success of therapeutic prism glasses, which shift left visual space toward the right. By shifting visual input, they seem to correct the mind's sense of midline. The result is not only the amelioration of visual neglect, but also of tactile, motor, and even representational neglect.

Orientation

An important question in studies of neglect has been: "left of what?" The answer has proven complex. It turns out that subjects may neglect objects to the left of their own midline (egocentric neglect) or may instead see all the objects in a room but neglect the left half of each individual object (allocentric neglect).

These two broad categories may be further subdivided. Patients with egocentric neglect may ignore the stimuli leftward of their trunks, their heads, or their retinae. Those with allocentric neglect may neglect the true left of a presented object or, amazingly, may first correct in their mind’s eye a slanted or inverted object and then neglect the side then interpreted as being on the left. So, for example, if patients are presented with an upside-down photograph of a face, they may mentally flip the object right side up and then neglect the left side of the adjusted image. This also occurs with slanted or mirror-image presentations. A patient looking at a mirror image of a map of the World may neglect to see the Western Hemisphere despite their inverted placement onto the right side of the map.

Theories of neglect

Researchers have argued whether neglect is a disorder of spatial attention or spatial representation.^[11]

Spatial attention

Spatial attention is the process where objects in one location are chosen for processing over objects in another location.^[7] This would imply that neglect is more intentional. The patient has an affinity to direct attention to the unaffected side.^[4] Neglect is caused by a decrease in stimuli in the contralesional side because of a lack of ipsilesional stimulation of the visual cortex and an increased inhibition of the contralesional side.^[12] In this theory neglect is seen as disorder of attention and orientation caused by disruption of the visual cortex. Patients with this disorder will direct attention and movements to the ipsilesional side and neglect stimuli in the contralestionl side despite having preserved visual fields. The result of all of this is an increased sensitivity of visual performance in the unaffected side.^[12] The patient shows an affinity to the ipsilesional side being unable to disengage attention from that side.^[13]

Spatial representation

Spatial representation is the way space is represented in the brain.^[3] In this theory it is believed that the underlying cause of neglect is the inability to form contralateral representations of space.^[7] In this theory neglect patients demonstrate a failure to describe the contralesional side of a familiar scene, from a given point, from memory. When asked to switch vantage points so that the scene that was on the contralesional side is now on the ipselesional side the patient was able to describe with details the scene they had earlier neglected. ^[13] This leads researchers to believe that neglect for images in memory may be disassociated from the neglect of stimuli in extrapersonal space.^[7] In this case patients have no loss of memory making their neglect a disorder of spatial representation which is the ability to reconstruct spatial frames in which the spatial relationship of objects, that may be perceived, imagined or remembered, with respect to the subject and each other are organized to be correctly acted on.^[13] Another example would be a left neglect patient failing to describe left turns while describing a familiar route. This shows that the failure to describe things in the contralesional side can also affect verbal items. These findings show that space representation is more topological than symbolic.^[13] Patients show a contralesional loss of space representation with a deviation of spatial reference to the ipsilesional side.^[3] In these cases we see a left-right dissimilarity of representation rather than a decline of representational competence.^[4]

Sequelae

Though frequently underappreciated, unilateral neglect can have dramatic consequences. It has more negative effect on functional ability, as measured by the Barthel ADL index, than age, sex, power, side of stroke, balance, proprioception, cognition, or premorbid ADL status. Its presence within the first 10 days of a stroke is a stronger predictor of poor functional recovery after one year than several other variables, including hemiparesis, hemianopsia, age, visual memory, verbal memory, or visuoconstructional ability. Neglect is likely among the reasons that patients with right hemisphere damage are twice as likely to fall as those with left brain damage. Patients with neglect rehabilitate longer and make less daily progress than other patients with similar functional status. And patients with neglect are less likely to live independently than even patients who have both severe aphasia and right hemiparesis.

Treatment

Treatment consists of finding ways to bring the patient's attention toward the left, usually done incrementally, by going just a few degrees past midline, and progressing from there. Rehabilitation of neglect is often carried out by Neuropsychologists, Occupational Therapist, Speech-Language Pathologists, Physical Therapists, Optometrists and Orthoptists

Forms of treatment that have been tested with variable reports of success include prismatic adaptation, where a prism lens is worn to pull the vision of the patient towards the left, constrained movement therapy where the "good" limb is constrained in a sling to encourage use of the contralesional limb. Eye-patching has similarly been used, placing a patch over the "good" eye. Pharmaceutical treatments have mostly focused on dopaminergic therapies such as bromocriptine, levodopa, and amphetamines, though these tests have had mixed results, helping in some cases and accentuating hemispatial neglect in others. Caloric Vestibular Stimulation (CVS) has been shown to bring about a brief remission in some cases.^[14] however this technique has been known to elicit unpleasant side-effects such as nystagmus, vertigo and vomiting.^[15] A study done by Schindler and colleagues examined the use of neck muscle vibration on the contralesional posterior neck muscles to induce diversion of gaze from the subjective straight ahead. Subjects received 15 consecutive treatment sessions and were evaluated on different aspects of the neglect disorder including perception of midline, and scanning deficits. The study found that there is evidence that neck muscle stimulation may work, especially if combined with visual scanning techniques. The improvement was evident 2 months after the completion of treatment.^[16]

Other areas of emerging treatment options include the use of prisms, visual scanning training, mental imagery training, video feedback training, trunk rotation, Galvanic Vestibular Stimulation (GVS), Transcranial Magnetic Stimulation (TMS) and Transcranial direct-current stimulation (tDCS). Of these emerging treatment options, the most studied intervention is prism adaptation and there is evidence of relatively long-term functional gains from comparatively short-term usage. However, all of these treatment interventions (particularly the stimulation techniques) are relatively new and randomised, controlled trial evidence is still limited. Further research is mandatory in this field of research in order to provide more support in evidence-based practice.^[17]

In a review article by Pierce & Buxbaum (2002), they concluded that the evidence for Hemispheric Activation Approaches, which focuses on moving the limb on the side of the neglect, has conflicting evidence in the literature.^[18] The authors note that a possible limitation in this approach is the requirement for the patients to actively move the neglected limb, which may not be possible for many patients. Constraint-Induced Therapy (CIT), appears to be an effective, long-term treatment for improving neglect in various studies. However, the use of CIT is limited to patients who have active control of wrist and hand extension. Prism Glasses, Hemispatial Glasses, and Eye-Patching have all appear to be effective in improving performance on neglect tests. Caloric Stimulation treatment appears to be effective in improving neglect; however, the effects are generally short-term. The review also suggests that Optokinetic Stimulation is effective in improving position sense, motor skills, body orientation, and perceptual neglect on a short-term basis. As with Caloric Stimulation treatment, long-term studies will be necessary to show its effectiveness. A few Trunk Rotation Therapy studies suggest its effectiveness in improving performance on neglect tests as well as the Functional Independence Measure (FIM). Some less studied treatment possibilities include treatments that target Dorsal Stream of visual processing, Mental Imagery Training, and Neck Vibration Therapy.^[18] Trunk rotation therapies aimed at improving postural disorders and balance deficits in patients with unilateral neglect, have demonstrated optimistic results in regaining voluntary trunk control when using specific postural rehabilitative devices. One such device is the Bon Saint Côme apparatus, which uses spatial exploratory tasks in combination with auditory and visual feedback mechanisms to develop trunk control. The Bon Saint Côme device has been shown to be effective with hemiplegic subjects due to the combination of trunk stability exercises, along with the cognitive requirements needed to perform the postural tasks.^[19]

External links

Hemineglect at Scholarpedia
What is Unilateral Neglect at University of Waterloo
Unilateral Neglect: Clinical and Experimental Studies detailed book review at Monash University
Research into Neglect Syndrome at Headway - the brain injury association
Bartolomeo, Paolo (2007). "Visual neglect". Current Opinion in Neurology 20 (4): 381–6. doi:10.1097/WCO.0b013e32816aa3a3. PMID 17620870. ^[20]

Vaishnavi, Sandeep; Jesse Calhoun & Anjan Chatterjee (February 2001). "Binding Personal and Peripersonal Space: Evidence from Tactile Extinction". Journal of Cognitive Neuroscience 13 (2): 181–189. doi:10.1162/089892901564243. Retrieved 6 May 2012. Cite uses deprecated parameters (help)^[8]

Kleinman, Jonathan; Melissa Newhart; Cameron Davis; Jennifer Heidler-Gary; Rebecca Gottesman; Argye Hillis (2007). "Right hemispatial neglect: Frequency and characterization following acute left hemisphere stroke". Brain and Cognition 64 (1): 50–59. doi:10.1016/j.bandc.2006.10.005. PMC 1949495. PMID 17174459. Retrieved 8 May 2012. ^[9]

Kleinman, Jonathan; Melissa Newhart; Cameron Davis; Jennifer Heidler-Gary; Rebecca Gottesman; Argye Hillis (2007). "Right hemispatial neglect: Frequency and characterization following acute left hemisphere stroke (Fig.2)". Brain and Cognition 64 (1): 50–59. doi:10.1016/j.bandc.2006.10.005. PMC 1949495. PMID 17174459. Retrieved 9 May 2012. </^[10]

References

^ ^a ^b ^c ^d Unsworth, C. A. (2007). Cognitive and Perceptual Dysfunction. In T. J. Schmitz & S. B. O’Sullivan (Eds.), Physical Rehabilitation (pp. 1149-1185). Philadelphia, F.A: Davis Company.
^ Kim, M; Na, D L; Kim, G M; Adair, J C; Lee, K H; Heilman, K M (1999). "Ipsilesional neglect: behavioural and anatomical features". Journal of Neurology, Neurosurgery & Psychiatry 67: 35–38. doi:10.1136/jnnp.67.1.35.
^ ^a ^b ^c ^d ^e Farah, Martha J. (2004). The cognitive neuroscience of vision (Repr. ed.). Malden, Mass.: Blackwell. p. 208. ISBN 0631214038.
^ ^a ^b ^c ^d ^e Mesulam, [ed. by] M.-Marsel (2000). Principles of behavioral and cognitive neurology (2. ed. ed.). Oxford [u.a.]: Oxford Univ. Press. pp. 174–239. ISBN 0195134753.
^ Vallar, Giusepppe (March 1998). "Spatial hemineglect in humans". Trends in Cognitive Sciences: 87–95. doi:10.1016/s1364-6613(98)01145-0.
^ Iachini, Tina; Ruggiero, Gennaro; Conson, Massimiliano; Trojano, Luigi (2009). "Lateralization of egocentric and allocentric spatial processing after parietal brain lesions". Brain and Cognition 69 (3): 514–20. doi:10.1016/j.bandc.2008.11.001. PMID 19070951.
^ ^a ^b ^c ^d D'Esposito, edited by Mark (2003). Neurological foundations of cognitive neuroscience ([Online-Ausg.] ed.). Cambridge, Mass.: MIT. pp. 1–19. ISBN 0262042096.
^ ^a ^b ^c Vaishnavi, Sandeep; Jesse Calhoun & Anjan Chatterjee (February 2001). "Binding Personal and Peripersonal Space: Evidence from Tactile Extinction". Journal of Cognitive Neuroscience 13 (2): 181–189. doi:10.1162/089892901564243. Retrieved 6 May 2012. Cite uses deprecated parameters (help)
^ ^a ^b ^c Kleinman, Jonathan; Melissa Newhart; Cameron Davis; Jennifer Heidler-Gary; Rebecca Gottesman; Argye Hillis (2007). "Right hemispatial neglect: Frequency and characterization following acute left hemisphere stroke". Brain and Cognition 64 (1): 50–59. doi:10.1016/j.bandc.2006.10.005. PMC 1949495. PMID 17174459. Retrieved 8 May 2012.
^ ^a ^b ^c Kleinman, Jonathan; Melissa Newhart; Cameron Davis; Jennifer Heidler-Gary; Rebecca Gottesman; Argye Hillis (2007). "Right hemispatial neglect: Frequency and characterization following acute left hemisphere stroke (Fig.2)". Brain and Cognition 64 (1): 50–59. doi:10.1016/j.bandc.2006.10.005. PMC 1949495. PMID 17174459. Retrieved 9 May 2012.
^ Bradshaw, John L.; Mattingley, Jason B. (1995). Clinical neuropsychology : behavioral and brain science. San Diego, Calif.: Academic Press. pp. 125–174. ISBN 0121245454.
^ ^a ^b Brandt, Thomas; Dieterich, Marianne; Strupp, Michael; Glasauer, Stefan (2012). "Model Approach to Neurological Varients of Visuo-spatial Neglect.". Biological Cybernetics 106 (11-12): 681–90. |accessdate= requires |url= (help)
^ ^a ^b ^c ^d Bisiach, Edoardo (1996). "Unilateral Neglect and the Structure of Space Representation". Current Directions in Psychological Science 5 (2): 65–65. |accessdate= requires |url= (help)
^ Gainotti, Guido (1993). "The Role of Spontaneous Eye Movements in Orienting Attention and in Ulinateral Neglect". In Robertson, Ian H.; Marshall, John C. Unilateral neglect: clinical and experimental studies. pp. 107–22. ISBN 978-0-86377-208-5. Retrieved 2010-06-04.
^ Miller S. M., Ngo. T. T. (2007). "Studies of caloric vestibular stimulation: implications for the cognitive neurosciences, the clinical neurosciences and neurophilosophy". Acta Neuropsychiatrica 19: 183–203. doi:10.1111/j.1601-5215.2007.00208.x.
^ Schindler I, Kerkhoff G, Karnath HO, Keller I,Goldenberg G. (2002). "Neck muscle vibration induces lasting recovery in spatial neglect". J Neurol Neurosurg Psychiatry 73 (412-9).
^ Luaute J, Halligan P, Rode G, Jacquin-Courtois S, Boisson D. (2006). "Prism adaptation first among equals in alleviating left neglect: A review". Restorative Neurology and Neuroscience 24 (4-6): 409–418.
^ ^a ^b Pierce S. R., Buxbaum L. J. (2002). "Treatments of unilateral neglect: A review". Archives of Physical Medicine and Rehabilitation 83 (2): 256–268. doi:10.1053/apmr.2002.27333.
^ de Seze M., Wiart L., Bon-Saint-Come A., Debelleix X., de Seze M., Joseph P. et al. (2001). "Rehabilitation of postural disturbances of hemiplegic patients by using trunk control retraining during exploratory exercises". Archives of Physical Medicine & Rehabilitation 82 (6): 793–800. doi:10.1053/apmr.2001.0820793.
^ Schindler, l; Kerkhoff G; Karnath HO; Keller I; Goldenberg G. (2002). "Neck muscle vibration induces lasting recovery in spatial neglect". J Neurol Neurosurg Psychiatry 73 (412-9).

Notes

Hans-Otto Karnath, A. David Milner, and Giuseppe Vallar (2002). The cognitive and neural bases of spatial neglect. Oxford [Oxfordshire]: Oxford University Press. ISBN 0-19-850833-6.
Robertson, I.H., & Halligan, P.W. (1999). Spatial neglect: A clinical handbook for diagnosis and treatment. Hove, East Sussex:Erlbaum.
Heilman, K.M and Valenstein, E. (2003) Clinical Neuropsychology: Fourth Edition
Husain, Masud; Rorden, Chris (2003). "Non-spatially lateralized mechanisms i n hemispatial neglect". Nature Reviews Neuroscience 4 (1): 26–36. doi:10.1038/nrn1005. PMID 12511859.

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Related Pictures

★リンクテーブル★

リンク元	「半側空間無視」「perceptual disorder」「片側無視」「sensory neglect」

「半側空間無視」

Hemispatial neglect
	Hemispatial neglect is most frequently associated with a lesion of the right parietal lobe (in yellow, at top)
Classification and external resources
ICD-9	781.8
eMedicine	neuro/719
MeSH	D010468

　　[★]

英: hemispatial neglect
同: 半側空間失認 hemispatial agnosia
関

[show details]

半側空間失認 : 約 39,700 件
半側空間無視 : 約 44,400 件

一側大脳半球の障害により、病巣と反対側の視空間を無視すること。(BET.261)
右頭頂葉(劣位半球)(左の半側空間無視を来す)、特に右頭頂葉・側頭葉・後頭葉の接合部が重要視されていたが、何処でも起こりうる。(BET.261 SCN.121t)

「perceptual disorder」

　　[★]

知覚障害

関: hemispatial neglect、sensory abnormality、sensory neglect

「片側無視」

　　[★]

関: hemisensory neglect、hemispatial neglect、半側空間無視

「sensory neglect」

　　[★]

空間無視

関: hemispatial neglect、perceptual disorder

[Unsworth-1] Unsworth, C. A. (2007). Cognitive and Perceptual Dysfunction. In T. J. Schmitz & S. B. O’Sullivan (Eds.), Physical Rehabilitation (pp. 1149-1185). Philadelphia, F.A: Davis Company.

[2] Kim, M; Na, D L; Kim, G M; Adair, J C; Lee, K H; Heilman, K M (1999). "Ipsilesional neglect: behavioural and anatomical features". Journal of Neurology, Neurosurgery & Psychiatry 67: 35–38. doi:10.1136/jnnp.67.1.35.

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hemispatial neglect