keyword
https://read.qxmd.com/read/34582822/revisiting-the-attentional-bias-in-the-split-brain
#21
JOURNAL ARTICLE
Markus Hausmann, Michael C Corballis, Mara Fabri
Previous research has revealed a strong right bias in allocation of attention in split brain subjects, suggesting that a pathological attention bias occurs not only after unilateral (usually right-hemispheric) damage but also after functional disconnection of intact right-hemispheric areas involved in allocation of attention from those in the left hemisphere. Here, we investigated the laterality bias in spatial attention, as measured with the greyscales task, in two split-brain subjects (D.D.C. and D.D.V.) who had undergone complete callosotomy...
November 12, 2021: Neuropsychologia
https://read.qxmd.com/read/34438111/clinical-assessment-of-upper-limb-hypertonia-in-central-neurological-diseases
#22
JOURNAL ARTICLE
L Mailhan, A Schnitzler, F Genêt, L Gatin, F Calé, A Geffrier, P Denormandie
The clinical assessment of a hypertonic upper limb in central neurological diseases should be analytical, systematic (shoulder, elbow, extrinsic and intrinsic hand) and focused on the patient or caregiver's wishes and on the expected objectives (esthetic, hygienic, functional). Nerve blocks can help to separate mixed contractures, show the existence of antagonist muscles or find a starter muscle in dystonia patterns. The etiology (especially the evolving nature of the disease), general health condition (especially in older adults), associated deficits (cerebellar, sensory and cognitive; hemineglect) are considered together to arrive at a contract with patients and/or caregivers...
February 2022: Hand Surgery and Rehabilitation
https://read.qxmd.com/read/34396912/opposed-attentional-hemi-bias-on-a-visuoconstructive-task-in-children-with-severe-hyperactivity-versus-severe-inattention
#23
JOURNAL ARTICLE
Claude M J Braun, Taline Sahakian, Julie Duval, Josée Delisle
Twenty six empirical investigations have now established that children and adults with DSM-defined Attention deficit/Hyperactivity disorder (ADHD) of the Hyperactive type (ADHD-H) or, more commonly, Combined Hyperactive/Inattentive types (ADHD-C) manifest a small but significant visual attentional bias to the right side (left subclinical neglect), consistently suggesting the existence of a subtle right hemisphere dysfunction or hemispheric imbalance in hyperactive people. Only one research team has investigated and compared the DSM-defined Inattentive subtype (ADHD-I) to the Hyperactive subtype (ADHD-H), confirming that line bisection is biased to the right in ADHD-H and discovering that it is biased to the left in ADHD-I...
May 2022: Laterality
https://read.qxmd.com/read/34354603/fast-hand-movements-unveil-multifractal-roots-of-adaptation-in-the-visuomotor-cognitive-system
#24
JOURNAL ARTICLE
Yvan Pratviel, Veronique Deschodt-Arsac, Florian Larrue, Laurent M Arsac
Beyond apparent simplicity, visuomotor dexterity actually requires the coordination of multiple interactions across a complex system that links the brain, the body and the environment. Recent research suggests that a better understanding of how perceptive, cognitive and motor activities cohere to form executive control could be gained from multifractal formalisms applied to movement behavior. Rather than a central executive "talking" to encapsuled components, the multifractal intuition suggests that eye-hand coordination arises from multiplicative cascade dynamics across temporal scales of activity within the whole system, which is reflected in movement time series...
2021: Frontiers in Physiology
https://read.qxmd.com/read/34054464/intentional-supernumerary-motor-phantom-limb-after-right-cerebral-stroke-a-case-report
#25
Mai Yamada, Yoshimi Sasahara, Makiko Seto, Akira Satoh, Mitsuhiro Tsujihata
A 47-year-old right-handed man was admitted to our hospital for rehabilitation after right basal ganglion hematoma. On day 57, he noticed a supernumerary motor phantom limb (SPL) involving his right arm, originating at the level of the elbow. The most notable finding of his SPL was the motor characteristic. When the subject had the intention to move the upper paralyzed limb simultaneously with the trainer's facilitating action, he said "there is another arm." The intention to move the paralyzed arm alone or passive movement of the paralyzed arm did not induce the SPL...
January 2021: Case Reports in Neurology
https://read.qxmd.com/read/33897336/unilateral-neglect-or-alien-hand-syndrome-a-diagnostic-challenge
#26
Wan R Wan Yusoff, Muhammad H Hanafi, Al Hafiz Ibrahim, Nur K Kassim, Anwar Suhaimi
Alien hand syndrome (AHS) is a rare post-stroke complication. Although the occurrence of AHS after stroke is rare, it can have a disabling impact on the lifestyle and career of the patients post stroke. It is difficult to distinguish AHS from the non-dominant hemispheric infarction with symptoms of hemianopia and left hemineglect, as patients with AHS can also have neglect as well as behaviour symptoms if the frontal lobe is involved. We report the case of a 62-year-old gentleman who was admitted to the rehabilitation ward and was treated for neglect and apraxia following right middle cerebral artery stroke...
April 2021: Journal of Taibah University Medical Sciences
https://read.qxmd.com/read/33714267/cerebral-metastasis-of-merkel-cell-carcinoma-following-resection-with-negative-margins-and-adjuvant-external-beam-radiation-a-case-report
#27
JOURNAL ARTICLE
Alex F Grubb, Elizabeth Hankollari
BACKGROUND: Merkel cell carcinoma (MCC) is a rare and aggressive neuroendocrine tumor of the skin. It is associated with advanced age, ultraviolet (UV) radiation, and Merkel cell polyomavirus. It has a predilection for the lymphatic system, but rarely spreads to the central nervous system. CASE PRESENTATION: A 71-year-old Caucasian man with a history of rheumatoid arthritis and MCC of the right lower eyelid and cheek presented with left-sided hemineglect and word-finding difficulty...
March 14, 2021: Journal of Medical Case Reports
https://read.qxmd.com/read/33505293/nonbacterial-thrombotic-endocarditis-related-to-adenocarcinoma-of-the-uterine-cervix
#28
Naruchorn Kijpaisalratana, Aurauma Chutinet, Suporn Travanichakul, Teeraparp Kitjawijit, Pajaree Yokumporn, Kotchakorn Duangjino, Nijasri C Suwanwela
We report a 66-year-old female patient who presented with acute onset of visual loss with relative afferent pupillary defect, hemineglect, hemihypesthesia, and apraxia. Magnetic resonance imaging of the brain demonstrated different stages of ischemic stroke in different vascular territories, suggesting cardiogenic embolism. Past history was significant for advanced-stage adenocarcinoma of the uterine cervix under chemoradiation treatment. On echocardiogram, vegetation at the aortic valve was observed. With the absence of evidence of infectious endocarditis, diagnosis of nonbacterial thrombotic endocarditis was made, and the patient was treated by long-term anticoagulant...
September 2020: Case Reports in Neurology
https://read.qxmd.com/read/33494832/blinding-in-electric-current-stimulation-in-subacute-neglect-patients-with-current-densities-of-0-8-a-m-2-a-cross-over-pilot-study
#29
JOURNAL ARTICLE
Anna Gorsler, Ulrike Grittner, Nadine Külzow, Torsten Rackoll
OBJECTIVE: Neglect after stroke is a disabling disorder and its rehabilitation is a major challenge. Transcranial direct current stimulation (tDCS) seems to be a promising adjuvant technique to improve standard care neglect therapy. Since electric fields are influenced by age-related factors, higher current densities are probably needed for effective treatment in aged stroke patients. Validation of treatment efficacy requires sham-controlled experiments, but increased current densities might comprise blinding...
January 25, 2021: BMC Research Notes
https://read.qxmd.com/read/33235687/right-and-left-sided-infective-endocarditis-in-an-iv-drug-abuser
#30
Maryam Nemati, Kristine Galang, Syung Min Jung
Infective endocarditis (IE) involving multiple cardiac valves is uncommon and has more risk of complications. We present an interesting case of infective endocarditis involving both aortic and tricuspid valves, suspected based on clinical presentation. He is a 54-year-old male with history of intravenous drug abuse (IVDA) who presented with exertional dyspnea, fevers/chills, fatigue, and temporarily vision loss. On exam, he had a low-grade fever, systolic murmur, bilateral crackles in lungs, and left hemineglect...
September 3, 2020: Journal of Community Hospital Internal Medicine Perspectives
https://read.qxmd.com/read/33225278/the-right-anterior-temporal-lobe-critically-contributes-to-magnitude-knowledge
#31
JOURNAL ARTICLE
Tobias Pflugshaupt, Daniel Bauer, Julia Frey, Tim Vanbellingen, Brigitte C Kaufmann, Stephan Bohlhalter, Thomas Nyffeler
Cognitive estimation is a mental ability applied to solve numerical problems when precise facts are unknown, unavailable or impractical to calculate. It has been associated with several underlying cognitive components, most often with executive functions and semantic memory. Little is known about the neural correlates of cognitive estimation. To address this issue, the present cross-sectional study applied lesion-symptom mapping in a group of 55 patients with left hemineglect due to right-hemisphere stroke...
2020: Brain communications
https://read.qxmd.com/read/32927461/the-merging-tracks-of-anosognosia-and-neglect
#32
JOURNAL ARTICLE
Karen G Langer, Julien Bogousslavsky
Anosognosia and hemineglect are among the most startling neurological phenomena identified during the 20th century. Though both are associated with right hemisphere cerebral dysfunction, notably stroke, each disorder had its own distinct literature. Anosognosia, as coined by Babinski in 1914, describes patients who seem to have no idea of their paralysis, despite general cognitive preservation. Certain patients seem more than unaware, with apparent resistance to awareness. More extreme, and qualitatively distinct, is denial of hemiplegia...
2020: European Neurology
https://read.qxmd.com/read/32907873/acute-cerebrovascular-event-in-a-covid-19-positive-patient-immediately-after-commencing-non-invasive-ventilation
#33
JOURNAL ARTICLE
Julia Burkert, Shashank Patil
A 71-year-old man presented to the emergency department (ED) with low oxygen saturations and symptoms consistent with COVID-19 infection. Apart from a small left-sided ischaemic stroke 10 years prior with very minor residual deficit, he had been well and in full-time employment until development of symptoms. Within minutes of commencing non-invasive ventilation (NIV) in the ED, he developed a complete left-sided paralysis and hemineglect. This case highlights the significance of the prothrombotic complications associated with COVID-19 infection...
September 8, 2020: BMJ Case Reports
https://read.qxmd.com/read/32727841/clinical-reasoning-an-81-year-old-woman-with-confusion-weakness-and-left-sided-hemineglect
#34
JOURNAL ARTICLE
Stefan Torelli, Abhishek Lenka, Fahad Khan, Faria Amjad
No abstract text is available yet for this article.
December 1, 2020: Neurology
https://read.qxmd.com/read/32296319/travel-planning-ability-in-right-brain-damaged-patients-two-case-reports
#35
JOURNAL ARTICLE
Alessia Bocchi, Massimiliano Palmiero, Maddalena Boccia, Antonella Di Vita, Cecilia Guariglia, Laura Piccardi
Planning ability is fundamental for goal-directed spatial navigation. Preliminary findings from patients and healthy individuals suggest that travel planning (TP)-namely, navigational planning-can be considered a distinct process from visuospatial planning (VP) ability. To shed light on this distinction, two right brain-damaged patients without hemineglect were compared with a control group on two tasks aimed at testing VP (i.e., Tower of London-16, ToL-16) and TP (i.e., Minefield Task, MFT). The former requires planning the moves to reach the right configuration of three colored beads on three pegs, whereas the latter was opportunely developed to assess TP in the navigational environment when obstacles are present...
2020: Frontiers in Human Neuroscience
https://read.qxmd.com/read/32243676/game-theoretical-mapping-of-white-matter-contributions-to-visuospatial-attention-in-stroke-patients-with-hemineglect
#36
JOURNAL ARTICLE
Monica N Toba, Melissa Zavaglia, Caroline Malherbe, Tristan Moreau, Federica Rastelli, Anna Kaglik, Romain Valabrègue, Pascale Pradat-Diehl, Claus C Hilgetag, Antoni Valero-Cabré
White matter bundles linking gray matter nodes are key anatomical players to fully characterize associations between brain systems and cognitive functions. Here we used a multivariate lesion inference approach grounded in coalitional game theory (multiperturbation Shapley value analysis, MSA) to infer causal contributions of white matter bundles to visuospatial orienting of attention. Our work is based on the characterization of the lesion patterns of 25 right hemisphere stroke patients and the causal analysis of their impact on three neuropsychological tasks: line bisection, letter cancellation, and bells cancellation...
April 3, 2020: Human Brain Mapping
https://read.qxmd.com/read/32198728/delirium-screening-in-neurocritical-care-and-stroke-unit-patients-a-pilot-study-on-the-influence-of-neurological-deficits-on-cam-icu-and-icdsc-outcome
#37
JOURNAL ARTICLE
Judith von Hofen-Hohloch, Carolin Awissus, Marie Michèle Fischer, Dominik Michalski, Jost-Julian Rumpf, Joseph Classen
BACKGROUND/OBJECTIVE: Delirium is a common complication in critically ill patients with a negative impact on hospital length of stay, morbidity, and mortality. Little is known on how neurological deficits affect the outcome of commonly used delirium screening tools such as the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) and the Intensive Care Delirium Screening Checklist (ICDSC) in neurocritical care patients. METHODS: Over a period of 1 month, all patients admitted to a neurocritical care and stroke unit at a single academic center were prospectively screened for delirium using both CAM-ICU and ICDSC...
March 20, 2020: Neurocritical Care
https://read.qxmd.com/read/32103968/mirror-therapy-in-stroke-rehabilitation-current-perspectives
#38
REVIEW
Dorcas Bc Gandhi, Albert Sterba, Himani Khatter, Jeyaraj D Pandian
In contrast to varied therapy approaches, mirror therapy (MT) can be used even in completely plegic stroke survivors, as it uses visual stimuli for producing a desired response in the affected limb. MT has been studied to have effects not just on motor impairments but also on sensations, visuospatial neglect, and pain after stroke. This paper attempts to systematically review and present the current perspectives on mirror therapy and its application in stroke rehabilitation, and dosage, feasibility and acceptability in stroke rehabilitation...
2020: Therapeutics and Clinical Risk Management
https://read.qxmd.com/read/32043533/-constraint-induced-movement-therapy-in-the-rehabilitation-of-hemineglect-after-a-stroke
#39
RANDOMIZED CONTROLLED TRIAL
M M Marándola, I Jiménez-Martín, M Rodríguez-Yáñez, S Arias-Rivas, M Santamaría-Calavid, J Castillo
INTRODUCTION: Hemineglect produces a lower capacity for recovery after the stroke and so far there are no rehabilitation techniques that have proven to be effective at functional level. AIMS: The main objective of this work was to assess whether the modified constraint-induced movement therapy (mCIMT)for hemineglect produces greater benefits than conventional therapy on functional hemineglect. Secondary objectives were to assess whether mCIMT produces greater benefits on upper and lower limb function as well as on the degree of autonomy and disability of patients with in relation to conventional therapy...
February 16, 2020: Revista de Neurologia
https://read.qxmd.com/read/31985748/horizontal-and-vertical-boundaries-of-hemineglect-the-puzzling-case-of-a-crossword-puzzle
#40
JOURNAL ARTICLE
René M Müri, Dario Cazzoli
No abstract text is available yet for this article.
January 27, 2020: JAMA Neurology
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