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Unilateral spatial neglect

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https://www.readbyqxmd.com/read/29791600/unilateral-spatial-neglect-in-the-acute-phase-of-ischemic-stroke-can-predict-long-term-disability-and-functional-capacity
#1
Gustavo José Luvizutto, Augusta Fabiana Moliga, Gabriela Rizzo Soares Rizzatti, Marcelo Ortolani Fogaroli, Eduardo de Moura Neto, Hélio Rubens de Carvalho Nunes, Luiz Antônio de Lima Resende, Rodrigo Bazan
OBJECTIVE: The aim of this study was to assess the relationship between the degree of unilateral spatial neglect during the acute phase of stroke and long-term functional independence. METHODS: This was a prospective study of right ischemic stroke patients in which the independent variable was the degree of spatial neglect and the outcome that was measured was functional independence. The potential confounding factors included sex, age, stroke severity, topography of the lesion, risk factors, glycemia and the treatment received...
May 21, 2018: Clinics
https://www.readbyqxmd.com/read/29782328/post-stroke-visual-neglect-affects-goal-directed-locomotion-in-different-perceptuo-cognitive-conditions-and-on-a-wide-visual-spectrum
#2
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke deficit, has been shown to affect the recovery of locomotion. However, our current understanding of USN role in goal-directed locomotion control, and this, in different cognitive/perceptual conditions tapping into daily life demands, is limited. OBJECTIVES: To examine goal-directed locomotion abilities in individuals with and without post-stroke USN vs. healthy controls. METHODS: Participants (n = 45, n = 15 per group) performed goal-directed locomotion trials to actual, remembered and shifting targets located 7 m away at 0° and 15° right/left while immersed in a 3-D virtual environment...
2018: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29770543/impairment-in-toileting-behavior-after-a-stroke
#3
Eri Kawanabe, Makoto Suzuki, Satoshi Tanaka, Shotaro Sasaki, Toyohiro Hamaguchi
AIM: Dependence for toileting is the most problematic aspect for patients after a stroke. However, the relative difficulty of each component of toileting and the predictors for independent performance of these activities are unknown. We investigated these issues in stroke patients using Boltzmann sigmoid and generalized linear modeling. METHODS: We carried out a cross-sectional correlation study, including 107 adult inpatients, hospitalized for a stroke. We assessed the activity components of toileting, as well as evaluated physical impairment using the Fugl-Meyer Assessment, impairments in balance using the Berg Balance Scale, cognitive impairments using the Mini-Mental State Examination and the presence or absence of unilateral spatial neglect or aphasia...
May 17, 2018: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/29720958/crossed-leg-sign-is-associated-with-severity-of-unilateral-spatial-neglect-after-stroke
#4
Gustavo José Luvizutto, Eduardo de Moura Neto, Luiz Antônio de Lima Resende, Hélio Rubens de Carvalho Nunes, Luiz Eduardo Gomes Garcia Betting, Rodrigo Bazan
Background: The crossed leg sign in patients with right hemisphere stroke is thought to be associated with perceptual disorders, such as unilateral spatial neglect (USN). The aim of this study was to compare the crossed leg sign with the severity of USN during the acute phase of stroke. Experimental procedures: This was an observational and prospective clinical study of individuals with a diagnosis of right parietal stroke, as confirmed by neuroimaging. The occurrence of the crossed leg sign, the time at which this occurred after the stroke, and a clinical diagnosis of USN were measured and recorded...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29685145/post-stroke-unilateral-spatial-neglect-virtual-reality-based-navigation-and-detection-tasks-reveal-lateralized-and-non-lateralized-deficits-in-tasks-of-varying-perceptual-and-cognitive-demands
#5
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke impairment, has been shown to affect the recovery of locomotor and navigation skills needed for community mobility. We recently found that USN alters goal-directed locomotion in conditions of different cognitive/perceptual demands. However, sensorimotor post-stroke dysfunction (e.g. decreased walking speed) could have influenced the results. Analogous to a previously used goal-directed locomotor paradigm, a seated, joystick-driven navigation experiment, minimizing locomotor demands, was employed in individuals with and without post-stroke USN (USN+ and USN-, respectively) and healthy controls (HC)...
April 23, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29614914/visual-perceptual-deficits-and-their-contribution-to-walking-dysfunction-in-individuals-with-post-stroke-visual-neglect
#6
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke deficit, severely affects functional mobility. Visual perceptual abilities (VPAs) are essential in activities involving mobility. However, whether and to what extent post-stroke USN affects VPAs and how they contribute to mobility impairments remains unclear. OBJECTIVES: To estimate the extent to which VPAs in left and right visual hemispaces are (1) affected in post-stroke USN; and (2) contribute to goal-directed locomotion...
April 3, 2018: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/29551364/ipsilesional-deficit-of-selective-attention-in-left-homonymous-hemianopia-and-left-unilateral-spatial-neglect
#7
Sylvie Chokron, Carole Peyrin, Céline Perez
AIMS: Patients with homonymous hemianopia may present a subtle ipsilesional deficit, recently referred to as 'sightblindness' in addition to the contralesional visual field defect. We recently demonstrated that this deficit could be worse in right brain-damaged patients with left hemianopia than in left brain-damaged patients with right hemianopia, confirming right hemisphere dominance for visuo-spatial and attentional capacities. In the present study we investigate whether this ipsilesional deficit could be attentional in nature and to what extent it is comparable in right brain-damaged (RBD) patients with left hemianopia and in RBD patients with left neglect...
March 15, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29523607/differing-effects-of-an-immersive-virtual-reality-programme-on-unilateral-spatial-neglect-on-activities-of-daily-living
#8
Kazuhiro Yasuda, Daisuke Muroi, Mizuki Hirano, Kenta Saichi, Hiroyasu Iwata
In clinical practice, therapists often encounter cases of unilateral spatial neglect (USN) observed in far and near space. In this case report, immersive virtual reality (VR) technology was adopted as a therapy tool in a patient with stroke with severe near and far space neglect. Neuropsychological tests in near and far space as well as the Catherine Bergego Scale (CBS), as an index of neglect in daily living, were measured preintervention and postintervention. Improvement of neuropsychological tests, particularly in far space, was clearly demonstrated postintervention...
March 9, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29519463/unilateral-spatial-neglect-after-posterior-parietal-damage
#9
Giuseppe Vallar, Elena Calzolari
Unilateral spatial neglect is a disabling neurologic deficit, most frequent and severe after right-hemispheric lesions. In most patients neglect involves the left side of space, contralateral to a right-hemispheric lesion. About 50% of stroke patients exhibit neglect in the acute phase. Patients fail to orient, respond to, and report sensory events occurring in the contralateral sides of space and of the body, to explore these portions of space through movements by action effectors (eye, limbs), and to move the contralateral limbs...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29469619/visual-search-in-unilateral-spatial-neglect-the-effects-of-distractors-on-a-dynamic-visual-search-task
#10
Rebeca Lauren Emerson, Alberto García-Molina, Jaume López Carballo, Juan García Fernández, Celeste Aparicio-López, Junquera Novo, Rocío Sánchez-Carrión, Antonia Enseñat-Cantallops, Jordi Peña-Casanova
The objective of this study was to examine visual scanning performance in patients with Unilateral Spatial Neglect (USN) in a visual search task. Thirty-one right hemisphere stroke patients with USN were recruited. They performed a dynamic visual search task with two conditions, with and without distractors, while eye movements were monitored with an eye-tracker. The main goal of the task was to select target stimuli that appeared from the top of the screen and moved vertically downward. Target detection and visual scanning percentage were assessed over two hemispaces (right, left) on two conditions (distractor, no distractor)...
February 22, 2018: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/29436486/randomised-double-blind-placebo-controlled-crossover-study-of-single-dose-guanfacine-in-unilateral-neglect-following-stroke
#11
Edwin S Dalmaijer, Korina M S Li, Nikos Gorgoraptis, Alexander P Leff, David L Cohen, Andrew D Parton, Masud Husain, Paresh A Malhotra
OBJECTIVE: Unilateral neglect is a poststroke disorder that impacts negatively on functional outcome and lacks established, effective treatment. This multicomponent syndrome is characterised by a directional bias of attention away from contralesional space, together with impairments in several cognitive domains, including sustained attention and spatial working memory. This study aimed to test the effects of guanfacine, a noradrenergic alpha-2A agonist, on ameliorating aspects of neglect...
February 7, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29357742/ecological-virtual-reality-evaluation-of-neglect-symptoms-evens-effects-of-virtual-scene-complexity-in-the-assessment-of-poststroke-unilateral-spatial-neglect
#12
Tatiana Ogourtsova, Philippe Archambault, Samir Sangani, Anouk Lamontagne
BACKGROUND: Unilateral spatial neglect (USN) is a highly prevalent and disabling poststroke impairment. USN is traditionally assessed with paper-and-pencil tests that lack ecological validity, generalization to real-life situations and are easily compensated for in chronic stages. Virtual reality (VR) can, however, counteract these limitations. OBJECTIVE: We aimed to examine the feasibility of a novel assessment of USN symptoms in a functional shopping activity, the Ecological VR-based Evaluation of Neglect Symptoms (EVENS)...
January 2018: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29354909/-post-stroke-unilateral-spatial-neglect-treated-with-acupuncture-and-rehabilitation-a-randomized-controlled-trial
#13
Yanli Li, Jimin Xu, Lanqun Liu, Mingyu Li, Huying Lu, Honglei Chen, Huilan Li, Zhigang Chen
OBJECTIVE: To observe the impacts on post-stroke unilateral spatial neglect treated with acupuncture for "regaining consciousness, benefiting marrow and opening orifices" and rehabilitation. METHODS: Forty patients of post-stroke unilateral spatial neglect were randomized into an observation group and a control group, 20 cases in each one. In the observation group, acupuncture was applied to the acupoints for "regaining consciousness, benefiting marrow and opening orifices", named Baihui (GV 20), Sishencong (EX-HN 1), Benshen (GB 13), Shenting (GV 24), and the bilateral yuan -primary points and luo -connecting points of the heart meridian, pericardium meridian and kidney meridian, as well as the acupoints along the affected meridians...
September 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29213233/multisensory-and-modality-specific-influences-on-adaptation-to-optical-prisms
#14
Elena Calzolari, Federica Albini, Nadia Bolognini, Giuseppe Vallar
Visuo-motor adaptation to optical prisms displacing the visual scene (prism adaptation, PA) is a method used for investigating visuo-motor plasticity in healthy individuals and, in clinical settings, for the rehabilitation of unilateral spatial neglect. In the standard paradigm, the adaptation phase involves repeated pointings to visual targets, while wearing optical prisms displacing the visual scene laterally. Here we explored differences in PA, and its aftereffects (AEs), as related to the sensory modality of the target...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29145178/minor-hemisphere-major-syndromes
#15
Antonio Carota, Julien Bogousslavsky
A right "minor hemisphere" does not exist as the right hemisphere is dominant for awareness (nosognosia), spatial attention, emotional regulation, facial and voice expressions, visual recognition, and topographical orientation. Without the right hemisphere, the world would be flat, deprived of general and spatial attentions, pointing preferentially to the right side of the space, lacking visual experiences and emotions, exhibiting diminished awareness of the self and environment. Clinical-related syndromes of the right hemisphere are unilateral spatial neglect, object and face visual agnosia, the anosognosia for hemiparesis and/or hemianopia, misidentification syndromes, mania, and other obsessions for the food and the body...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29111838/exploring-barriers-and-facilitators-to-the-clinical-use-of-virtual-reality-for-post-stroke-unilateral-spatial-neglect-assessment
#16
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Hemineglect, defined as a failure to attend to the contralesional side of space, is a prevalent and disabling post-stroke deficit. Conventional hemineglect assessments lack sensitivity as they contain mainly non-functional tasks performed in near-extrapersonal space, using static, two-dimensional methods. This is of concern given that hemineglect is a strong predictor for functional deterioration, limited post-stroke recovery, and difficulty in community reintegration. With the emerging field of virtual reality, several virtual tools have been proposed and have reported better sensitivity in neglect-related deficits detection than conventional methods...
November 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29097959/spanish-transcultural-adaptation-and-validity-of-the-behavioral-inattention-test
#17
Ángel Sánchez-Cabeza, Elisabet Huertas-Hoyas, Nuria Máximo-Bocanegra, Rosa María Martínez-Piédrola, Marta Pérez-de-Heredia-Torres, Jorge Alegre-Ayala
Objective: To adapt, validate, and translate the Behavioral Inattention Test as an assessment tool for Spanish individuals with unilateral spatial neglect. Design: A cross-sectional descriptive study. Setting: University laboratories. Participants: A sample of 75 Spanish stroke patients and 18 healthy control subjects. Interventions: Not applicable. Main Outcome Measures: The Behavioral Inattention Test...
2017: Occupational Therapy International
https://www.readbyqxmd.com/read/28980607/-metavestibular-disorders-and-disorders-of-higher-vestibular-function
#18
M V Zamergrad, O S Levin
Vertigo, instability, oscillopsia and concomitant autonomic disorders are classical and well-known symptoms of vestibular disorders. At the same time, recent studies suggest that there are more complicated vestibular dysfunctions caused by the cortical projections of the vestibular system. The central vestibular system includes parietal temporal cortex and insular, anterior intraparietal sulcus, posterior parietal and medial parts of the superior temporal gyrus, singular gyrus retrosplenial cortex, hippocampus and parahippocampal area...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28980076/the-assessment-of-hemineglect-syndrome-with-cancellation-tasks-a-comparison-between-the-bells-test-and-the-apples-test
#19
Benedetta Basagni, Antonio De Tanti, Alessio Damora, Laura Abbruzzese, Valentina Varalta, Gabriella Antonucci, Wai Ling Bickerton, Nicola Smania, Mauro Mancuso
Unilateral spatial neglect (USN) is a frequent consequence of acquired brain injury, especially following right hemisphere damage. Traditionally, unilateral spatial neglect is assessed with cancellation tests such as the Bells test. Recently, a new cancellation test, the Apples test, has been proposed. The present study aims at comparing the accuracy of these two tests in detecting hemispatial neglect, on a sample of 56 right hemisphere stroke patients with a diagnosis of USN. In order to evaluate the agreement between the Apples and Bells tests, Cohen's kappa and McNemar's test were used to assess differences between the two methods of evaluation...
December 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28958616/effect-of-subtypes-of-neglect-on-functional-outcome-in-stroke-patients
#20
Simona Spaccavento, Fara Cellamare, Rosanna Falcone, Anna Loverre, Roberto Nardulli
OBJECTIVE: Because of the loss of autonomy in daily-life activities, spatial neglect after stroke is one of the main causes of disability. According to the spatial domains, neglect can be divided into personal (body), peripersonal (reaching) and extrapersonal (far) space. We evaluated the effect of these subtypes of neglect on functional outcome of rehabilitation in stroke patients. METHODS: A total of 1350 stroke patients were consecutively admitted into our neurorehabilitation unit from 2002 to 2016...
November 2017: Annals of Physical and Rehabilitation Medicine
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