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Hemineglect

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https://www.readbyqxmd.com/read/29789957/thalamic-lesions-and-aphasia-or-neglect
#1
REVIEW
Shinichiro Maeshima, Aiko Osawa
PURPOSE OF REVIEW: When the thalamus is damaged, not only are there neurological symptoms such as sensory impairment, hemianopia, or motor control disorders, but there are also various neuropsychological symptoms. We discuss the basic anatomy and function of the thalamus followed by a discussion of thalamic aphasia and hemineglect. RECENT FINDINGS: Subcortical lesions in patients with hemineglect involved the anatomical network directly linked to the superior temporal gyrus...
May 23, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29726775/parietal-association-deficits-in-patients-harboring-parietal-lobe-gliomas-a-prospective-study
#2
Evangelia Liouta, George Stranjalis, Aristotelis V Kalyvas, Christos Koutsarnakis, Stavroula Pantinaki, Faidon Liakos, Spyros Komaitis, Lampis C Stavrinou
OBJECTIVE Although the parietal lobe is a common site for glioma formation, current literature is scarce, consists of retrospective studies, and lacks consistency with regard to the incidence, nature, and severity of parietal association deficits (PADs). The aim of this study was to assess the characteristics and incidence of PADs in patients suffering from parietal lobe gliomas through a prospective study and a battery of comprehensive neuropsychological tests. METHODS Between 2012 and 2016 the authors recruited 38 patients with glioma confined in the parietal lobe...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29540611/ambulance-clinical-triage-for-acute-stroke-treatment-paramedic-triage-algorithm-for-large-vessel-occlusion
#3
Henry Zhao, Lauren Pesavento, Skye Coote, Edrich Rodrigues, Patrick Salvaris, Karen Smith, Stephen Bernard, Michael Stephenson, Leonid Churilov, Nawaf Yassi, Stephen M Davis, Bruce C V Campbell
BACKGROUND AND PURPOSE: Clinical triage scales for prehospital recognition of large vessel occlusion (LVO) are limited by low specificity when applied by paramedics. We created the 3-step ambulance clinical triage for acute stroke treatment (ACT-FAST) as the first algorithmic LVO identification tool, designed to improve specificity by recognizing only severe clinical syndromes and optimizing paramedic usability and reliability. METHODS: The ACT-FAST algorithm consists of (1) unilateral arm drift to stretcher <10 seconds, (2) severe language deficit (if right arm is weak) or gaze deviation/hemineglect assessed by simple shoulder tap test (if left arm is weak), and (3) eligibility and stroke mimic screen...
April 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29430622/prehospital-stroke-scales-and-large-vessel-occlusion-a-systematic-review
#4
S Vidale, E Agostoni
BACKGROUND AND PURPOSE: Time sensitivity for pharmacological and mechanical arterial recanalization in acute ischemic stroke influences the choice of the reference hospital. The accurate selection and identification of patients with high probability of a large vessel occlusion (LVO) in the prehospital setting improve the rationalization of the transport in the more suitable centers. Aim of this analysis was to determine the diagnostic accuracy of prehospital stroke scales detecting LVO...
February 11, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29213492/bells-test-are-there-differences-in-performance-between-adult-groups-aged-40-59-and-60-75
#5
Silvio Cesar Escovar Paiva, Vanisa Fante Viapiana, Caroline de Oliveira Cardoso, Rochele Paz Fonseca
Objective: To verify whether differences exist between groups of Brazilian adults aged 40-59 and 60-75 in respective performance on the Bells Test, given the dearth of literature investigating the relationship between focused visual attention and the age factor. Methods: Eighty-four neurologically healthy adults (half aged 40-59 and half 60-75) with high educational level (40-59 years group: M=17.75 years' education; SD=4.00; 60-75 years group: M=15.85 years education; SD=3...
January 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29189299/global-orientation-in-space-and-the-lateralization-of-brain-functions
#6
Marianne Dieterich, Thomas Brandt
PURPOSE OF REVIEW: The functional role of the vestibular system for multisensory orientation and sensorimotor control is reviewed with a special focus on hemispherical lateralization and its consequences for neurological disorders of higher cortical function. RECENT FINDINGS: The peripheral and central vestibular systems are bilaterally organized with ipsilateral and contralateral ascending pathways and two multisensory cortical networks in the right and left hemisphere...
February 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29111838/exploring-barriers-and-facilitators-to-the-clinical-use-of-virtual-reality-for-post-stroke-unilateral-spatial-neglect-assessment
#7
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/28980076/the-assessment-of-hemineglect-syndrome-with-cancellation-tasks-a-comparison-between-the-bells-test-and-the-apples-test
#8
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/28875598/recovery-of-proprioception-in-the-upper-extremity-by-robotic-mirror-therapy-a-clinical-pilot-study-for-proof-of-concept
#9
Hyung Seok Nam, Sukgyu Koh, Jaewon Beom, Yoon Jae Kim, Jang Woo Park, Eun Sil Koh, Sun Gun Chung, Sungwan Kim
A novel robotic mirror therapy system was recently developed to provide proprioceptive stimulus to the hemiplegic arm during a mirror therapy. Validation of the robotic mirror therapy system was performed to confirm its synchronicity prior to the clinical study. The mean error angle range between the intact arm and the robot was 1.97 to 4.59 degrees. A 56-year-old male who had right middle cerebral artery infarction 11 months ago received the robotic mirror therapy for ten 30-minute sessions during 2 weeks...
October 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28842390/user-perspectives-on-exergames-designed-to-explore-the-hemineglected-space-for-stroke-patients-with-visuospatial-neglect-usability-study
#10
Bernadette C Tobler-Ammann, Elif Surer, Ruud H Knols, N Alberto Borghese, Eling D de Bruin
BACKGROUND: Visuospatial neglect due to stroke is characterized by the inability to perceive stimuli emerging in the area opposite to the side of brain damage. Besides adopting conventional rehabilitation methods to treat neglect symptoms, the use of virtual reality (VR) is becoming increasingly popular. We designed a series of 9 exergames aimed to improve exploration of the neglected side of space. When new VR interventions are designed, it is important to assess the usability aspects of such management strategies within the target population...
August 25, 2017: JMIR Serious Games
https://www.readbyqxmd.com/read/28842388/exergames-encouraging-exploration-of-hemineglected-space-in-stroke-patients-with-visuospatial-neglect-a-feasibility-study
#11
Bernadette C Tobler-Ammann, Elif Surer, Eling D de Bruin, Marco Rabuffetti, N Alberto Borghese, Renato Mainetti, Michele Pirovano, Lia Wittwer, Ruud H Knols
BACKGROUND: Use of exergames can complement conventional therapy and increase the amount and intensity of visuospatial neglect (VSN) training. A series of 9 exergames-games based on therapeutic principles-aimed at improving exploration of the neglected space for patients with VSN symptoms poststroke was developed and tested for its feasibility. OBJECTIVES: The goal was to determine the feasibility of the exergames with minimal supervision in terms of (1) implementation of the intervention, including adherence, attrition and safety, and (2) limited efficacy testing, aiming to document possible effects on VSN symptoms in a case series of patients early poststroke...
August 25, 2017: JMIR Serious Games
https://www.readbyqxmd.com/read/28782543/the-active-construction-of-the-visual-world
#12
REVIEW
Thomas Parr, Karl J Friston
What we see is fundamentally dependent on where we look. Despite this seemingly obvious statement, many accounts of the neurobiology underpinning visual perception fail to consider the active nature of how we sample our sensory world. This review offers an overview of the neurobiology of visual perception, which begins with the control of saccadic eye movements. Starting from here, we can follow the anatomy backwards, to try to understand the functional architecture of neuronal networks that support the interrogation of a visual scene...
September 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28611828/heads-up-a-novel-provocative-maneuver-to-guide-acute-ischemic-stroke-management
#13
Latisha K Ali, Julius K Weng, Sidney Starkman, Jeffrey L Saver, Doojin Kim, Bruce Ovbiagele, Brian H Buck, Nerses Sanossian, Paul Vespa, Oh Young Bang, Reza Jahan, Gary R Duckwiler, Fernando Viñuela, David S Liebeskind
BACKGROUND: A common dilemma in acute ischemic stroke management is whether to pursue recanalization therapy in patients with large vessel occlusions but minimal neurologic deficits. We describe and report preliminary experience with a provocative maneuver, i.e. 90-degree elevation of the head of bed for 30 min, which stresses collaterals and facilitates decision-making. METHODS: A prospective cohort study of <7.5 h of acute anterior circulation territory ischemia patients with minimal deficits despite middle cerebral artery (MCA) or internal carotid artery (ICA) occlusive disease...
March 2017: Interventional Neurology
https://www.readbyqxmd.com/read/28411260/the-fast-ed-app-a-smartphone-platform-for-the-field-triage-of-patients-with-stroke
#14
Raul G Nogueira, Gisele S Silva, Fabricio O Lima, Yu-Chih Yeh, Carol Fleming, Daniel Branco, Arthur H Yancey, Jonathan J Ratcliff, Robert Keith Wages, Earnest Doss, Mehdi Bouslama, Jonathan A Grossberg, Diogo C Haussen, Teppei Sakano, Michael R Frankel
BACKGROUND AND PURPOSE: The Emergency Medical Services field triage to stroke centers has gained considerable complexity with the recent demonstration of clinical benefit of endovascular treatment for acute ischemic stroke. We sought to describe a new smartphone freeware application designed to assist Emergency Medical Services professionals with the field assessment and destination triage of patients with acute ischemic stroke. METHODS: Review of the application's platform and its development as well as the different variables, assessments, algorithms, and assumptions involved...
May 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28385053/using-real-time-fmri-neurofeedback-to-restore-right-occipital-cortex-activity-in-patients-with-left-visuo-spatial-neglect-proof-of-principle-and-preliminary-results
#15
Fabien Robineau, Arnaud Saj, Rémi Neveu, Dimitri Van De Ville, Frank Scharnowski, Patrik Vuilleumier
Hemineglect is common after right parietal stroke, characterised by impaired awareness for stimuli in left visual space, with suppressed neural activity in the right visual cortex due to losses in top-down attention signals. Here we sought to assess whether hemineglect patients are able to up-regulate their right visual cortex activity using auditory real-time functional magnetic resonance imaging (rt-fMRI) neurofeedback. We also examined any effect of this training procedure on neglect severity. Two different neurofeedback methods were used...
April 6, 2017: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/28272901/attentional-impairments-following-right-hemisphere-damage-with-and-without-hemispatial-neglect-a-comparative-study
#16
Cristina Elizabeth Izábal Wong, Laura Damiani Branco, Charles Cotrena, Yves Joanette, Rochele Paz Fonseca
This study aimed to evaluate the performance of patients with right hemisphere damage (RHD) with or without hemispatial neglect (HN) on a cancellation task. The study involved 31 control participants and 31 patients with RHD, matched by age, education, and frequency of reading and writing habits. The numbers of omission and random errors as well as the mean time to task completion were compared between adults with and without RHD, as well as between patients with and without HN. The latter made more left-sided omission errors, and more overall omission errors, than patients with RHD and no HN...
May 2018: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/28237912/vestibular-stimulation-improves-insight-into-illness-in-schizophrenia-spectrum-disorders
#17
RANDOMIZED CONTROLLED TRIAL
Philip Gerretsen, David D Pothier, Carolyn Falls, Maxine Armstrong, Thushanthi Balakumar, Hiroyuki Uchida, David C Mamo, Bruce G Pollock, Ariel Graff-Guerrero
Impaired insight into illness (IMP-INS) is common among individuals with schizophrenia spectrum disorders (SSD), contributing to medication nonadherence and poor clinical outcomes. Caloric vestibular simulation (CVS) is typically used to assess peripheral vestibular system function. Left cold CVS is also a transiently effective treatment for IMP-INS and hemineglect secondary to right brain hemisphere stroke, and possibly for IMP-INS and mood stabilization in patients with SSD. Participants with SSD and moderate-to-severe IMP-INS participated in an exploratory double blind, crossover, randomized controlled study of the effects of CVS on IMP-INS...
May 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28003947/the-use-of-the-target-cancellation-task-to-identify-eloquent-visuospatial-regions-in-awake-craniotomies-technical-note
#18
Andrew K Conner, Chad Glenn, Joshua D Burks, Tressie McCoy, Phillip A Bonney, Ahmed A Chema, Justin L Case, Scott Brunner, Cordell Baker, Michael Sughrue
The success of awake craniotomies relies on the patient's performance of function-specific tasks that are simple, quick, and reproducible. Intraoperative identification of visuospatial function through cortical and subcortical mapping has utilized a variety of intraoperative tests, each with its own benefits and drawbacks. In light of this, we developed a simple software program that aids in preventing neglect by simulating a target-cancellation task on a portable electronic device. In this report, we describe the interactive target cancellation task and have reviewed seven consecutive patients who underwent awake craniotomy for parietal and/or posterior temporal infiltrating brain tumors of the non-dominant hemisphere...
November 17, 2016: Curēus
https://www.readbyqxmd.com/read/27590188/rehabilitation-of-hemineglect-of-the-left-arm-using-movement-detection-bracelets-activating-a-visual-and-acoustic-alarm
#19
Jose M Trejo-Gabriel-Galan, V Rogel-Melgosa, S Gonzalez, J Sedano, J R Villar, N Arenaza-Basterrechea
BACKGROUND: Hemineglect is frequent after right hemisphere stroke and prevents functional independence, but effective rehabilitation interventions are lacking. Our objective was to determine if a visual-acoustic alarm in the hemineglect arm activated by a certain discrepancy in movement of both hands can enhance neglect arm use in five tasks of daily living. METHODS: In this pre-post intervention study 9 stroke patients with residual hemineglect of the arm were trained for 7 days in five bimanual tasks of daily living: carrying a tray, button fastening, cutting food with knife and fork, washing the face with both hands and arm sway while walking...
September 2, 2016: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/27445734/persistence-of-gender-related-effects-on-visuo-spatial-and-verbal-working-memory-in-right-brain-damaged-patients
#20
Laura Piccardi, Alessandro Matano, Giovanni D'Antuono, Dario Marin, Paola Ciurli, Chiara Incoccia, Paola Verde, Paola Guariglia
The aim of the present study was to verify if gender differences in verbal and visuo-spatial working memory would persist following right cerebral lesions. To pursue our aim we investigated a large sample (n. 346) of right brain-damaged patients and healthy participants (n. 272) for the presence of gender effects in performing Corsi and Digit Test. We also assessed a subgroup of patients (n. 109) for the nature (active vs. passive) of working memory tasks. We tested working memory (WM) administering the Corsi Test (CBT) and the Digit Span (DS) using two different versions: forward (fCBT and fDS), subjects were required to repeat stimuli in the same order that they were presented; and backward (bCBT and bDS), subjects were required to repeat stimuli in the opposite order of presentation...
2016: Frontiers in Behavioral Neuroscience
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