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"Hemispatial neglect"

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https://www.readbyqxmd.com/read/29560941/-psychological-assessment-of-visual-hemispatial-neglect-standardization-and-approbation-of-the-modified-digit-cancellation-test
#1
L I Wasserman, T V Cherednikova, E L Wasserman, M V Wasserman, O Yu Shchelkova, E V Solovyova
AIM: To study the phenomena of visual-hemispatial neglect in healthy people and patients with brain diseases of different genesis. MATERIAL AND METHODS: Eighty-eight patients with schizophrenia spectrum disorders, 68 patients with exogenous organic brain diseases and 240 healthy adults of different age were included in the study. The digit cancellation test modified by the authors was used. RESULTS AND CONCLUSION: The validity of the modified digit cancellation test was approved and its age standards were obtained...
2018: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29551990/recovery-from-spatial-neglect-with-intra-and-transhemispheric-functional-connectivity-changes-in-vestibular-and-visual-cortex-areas-a-case-study
#2
Julian Conrad, Rainer Boegle, Matthias Ertl, Thomas Brandt, Marianne Dieterich
Objective: Vestibular signals are involved in higher cortical functions like spatial orientation and its disorders. Vestibular dysfunction contributes, for example, to spatial neglect which can be transiently improved by caloric stimulation. The exact roles and mechanisms of the vestibular and visual systems for the recovery of neglect are not yet known. Methods: Resting-state functional connectivity (fc) magnetic resonance imaging was recorded in a patient with hemispatial neglect during the acute phase and after recovery 6 months later following a right middle cerebral artery infarction before and after caloric vestibular stimulation...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29519455/the-parietal-lobe-and-the-vestibular-system
#3
Marianne Dieterich, Thomas Brandt
The vestibular cortex differs in various ways from other sensory cortices. It consists of a network of several distinct and separate temporoparietal areas. Its core region, the parietoinsular vestibular cortex (PIVC), is located in the posterior insula and retroinsular region and includes the parietal operculum. The entire network is multisensory (in particular, vestibular, visual, and somatosensory). The peripheral and central vestibular systems are bilaterally organized; there are various pontomesencephalic brainstem crossings and at least two transcallosal connections of both hemispheres, between the PIVC and the motion-sensitive visual cortex areas, which also mediate vestibular input...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29449520/-a-case-of-hypertrophic-pachymeningitis-with-symptomatic-venous-congestion-due-to-sinus-stenosis
#4
Sho Umegaki, Shin-Ichiro Osawa, Kensuke Kimura, Toshimi Okushima, Nobuhisa Yajima, Tsuyoshi Kawamura, Teiji Tominaga
We report a patient with hypertrophic pachymeningitis and symptomatic stenosis of the superior sagittal sinus. A 71-year-old man presented with right hemiparesis, sensory-dominant aphasia, and right hemispatial neglect that had been worsening over 2 weeks. Computed tomography showed isodense crescent-shaped lesions deforming the surface of the left cerebral hemisphere, mimicking a subdural hematoma with atypical perifocal edema in the left parietal lobe. Magnetic resonance imaging showed diffuse thickening of the dura mater with contrast enhancement of his left cerebral hemisphere...
February 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29316244/hemispatial-neglect-and-serial-order-in-verbal-working-memory
#5
Sophie Antoine, Mariagrazia Ranzini, Jean-Philippe van Dijck, Hichem Slama, Mario Bonato, Ann Tousch, Myrtille Dewulf, Jean-Christophe Bier, Wim Gevers
Working memory refers to our ability to actively maintain and process a limited amount of information during a brief period of time. Often, not only the information itself but also its serial order is crucial for good task performance. It was recently proposed that serial order is grounded in spatial cognition. Here, we compared performance of a group of right hemisphere-damaged patients with hemispatial neglect to healthy controls in verbal working memory tasks. Participants memorized sequences of consonants at span level and had to judge whether a target consonant belonged to the memorized sequence (item task) or whether a pair of consonants were presented in the same order as in the memorized sequence (order task)...
January 9, 2018: Journal of Neuropsychology
https://www.readbyqxmd.com/read/29203746/-effectiveness-of-early-physiotherapy-treatment-for-ischaemic-stroke-patients-suffering-intercurrently-from-post-stroke-depression-and-or-hemispatial-neglect-syndromes
#6
Justyna Ćwieląg, Marta Woldańska-Okońska
Wstęp: Depresja poudarowa i zespoł pomijania stronnego są jednymi z szeregu zaburzeń neurologicznych występujących jako konsekwencje incydentu udarowego. Oba zaburzenia uważa się za czynniki negatywnie wpływające na szybszy powrot pacjenta do zdrowia. Zadaniem wczesnej fizjoterapii po incydencie udarowym jest poprawa funkcji motorycznych oraz poprawa jakości życia pacjenta. Materiał i metody: W badaniu wzięło udział 51 pacjentow zakwalifikowanych do wzięcia udziału w "Narodowym Programie Profilaktyki i Leczenia Chorob Układu Sercowo-Naczyniowego na lata 2006-2008 POLCARD"...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29199507/asymmetric-oculomotor-apraxia-optic-ataxia-and-simultanagnosia-with-right-hemispatial-neglect-from-a-predominantly-left-sided-lesion-of-the-parieto-occipital-area
#7
Yasuhisa Sakurai, Masanori Fujimoto, Kensuke Hamada, Izumi Sugimoto
INTRODUCTION: Bálint's syndrome involves bilateral damage to the parieto-occipital area. The extent of the effect of unilateral damage on the Bálint's triad (oculomotor apraxia, optic ataxia, and simultanagnosia) remains unknown. METHODS: We examined a 63-year-old, right-handed woman who developed right hemianopia, oculomotor apraxia, optic ataxia, simultanagnosia, and hemispatial neglect (HSN) for the right after a cerebral infarction, with detailed neuropsychological tests, magnetic resonance imaging, and single photon emission computed tomography (SPECT)...
January 2018: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/29189299/global-orientation-in-space-and-the-lateralization-of-brain-functions
#8
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/29107706/effects-of-transcranial-direct-current-stimulation-over-the-supplementary-motor-area-body-weight-supported-treadmill-gait-training-in-hemiparetic-patients-after-stroke
#9
Atsushi Manji, Kazu Amimoto, Tadamitsu Matsuda, Yoshiaki Wada, Akira Inaba, Sangkyun Ko
Transcranial direct current stimulation (tDCS) is used in a variety of disorders after stroke including upper limb motor dysfunctions, hemispatial neglect, aphasia, and apraxia, and its effectiveness has been demonstrated. Although gait ability is important for daily living, there were few reports of the use of tDCS to improve balance and gait ability. The supplementary motor area (SMA) was reported to play a potentially important role in balance recovery after stroke. We aimed to investigate the effect of combined therapy body weight-supported treadmill training (BWSTT) and tDCS on gait function recovery of stroke patients...
January 1, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29105618/hemispatial-neglect-following-right-hemisphere-stroke-clinical-course-and-sensitivity-of-diagnostic-tasks
#10
Marianne E Klinke, Haukur Hjaltason, Guðný Bergþóra Tryggvadóttir, Helga Jónsdóttir
Background Stroke patients with severe symptoms of hemispatial neglect (HN) are known to experience a weaker recovery than those less affected from the outset. Correct identification of HN is therefore important throughout the course of rehabilitation. Objectives To explore: (i) the course of clinical symptoms in stroke patients with moderate/severe HN from acute setting to home, (ii) changes in sensitivity of diagnostic tasks over time, and (iii) agreement between the researcher's and patients' HN assessments...
March 2018: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/29076767/relationship-between-somatosensory-event-related-potential-n140-aberrations-and-hemispatial-agnosia-in-patients-with-stroke-a-preliminary-study
#11
Tomoyuki Ueno, Yasushi Hada, Yukiyo Shimizu, Thoru Yamada
PURPOSE: The somatosensory event-related potential N140 is thought to be related to selective attention. This study aimed to compare the somatosensory event-related potential N140 in healthy subjects to that in patients with stroke to determine whether N140 and attentiveness are associated in patients with stroke with or without hemispatial agnosia. MATERIALS AND METHODS: Normal somatosensory event-related potential N140 values were determined using data from ten healthy subjects...
June 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29050381/space-based-bias-of-covert-visual-attention-in-complex-regional-pain-syndrome
#12
Janet H Bultitude, Ian Walker, Charles Spence
See Legrain (doi:10.1093/awx188) for a scientific commentary on this article. Some patients with complex regional pain syndrome report that movements of the affected limb are slow, more effortful, and lack automaticity. These symptoms have been likened to the syndrome that sometimes follows brain injury called hemispatial neglect, in which patients exhibit attentional impairments and problems with movements affecting the contralesional side of the body and space. Psychophysical testing of patients with complex regional pain syndrome has found evidence for spatial biases when judging visual targets distanced at 2 m, but not in directions that indicate reduced attention to the affected side...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28980076/the-assessment-of-hemineglect-syndrome-with-cancellation-tasks-a-comparison-between-the-bells-test-and-the-apples-test
#13
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/28802812/noninvasive-brain-stimulation-improves-hemispatial-neglect-after-stroke-a-systematic-review-and-meta-analysis
#14
REVIEW
Ana Paula S Salazar, Patrícia G Vaz, Ritchele R Marchese, Cinara Stein, Camila Pinto, Aline S Pagnussat
OBJECTIVE: To evaluate the effectiveness of noninvasive brain stimulation (NIBS)-repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS)-on hemispatial neglect and performance in activities of daily living (ADL) after stroke. DATA SOURCES: MEDLINE (PubMed), EMBASE, Cochrane CENTRAL, Scopus, SciELO, and Physiotherapy Evidence Database were searched from database inception to December 2016. DATA SELECTION: Randomized controlled trials or crossover trials focused on determining the effects of tDCS or rTMS combined or not combined with other therapies for hemispatial neglect after stroke...
February 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28756213/noradrenergic-antagonists-mitigate-amphetamine-induced-recovery
#15
M J Hylin, M M Brenneman, J V Corwin
Brain injury, including that due to stroke, leaves individuals with cognitive deficits that can disrupt daily aspect of living. As of now there are few treatments that shown limited amounts of success in improving functional outcome. The use of stimulants such as amphetamine have shown some success in improving outcome following brain injury. While the pharmacological mechanisms for amphetamine are known; the specific processes responsible for improving behavioral outcome following injury remain unknown. Understanding these mechanisms can help to refine the use of amphetamine as a potential treatment or lead to the use of other methods that share the same pharmacological properties...
July 27, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28623753/precuneal-epilepsy-clinical-features-and-surgical-outcome
#16
Adil Harroud, Olivier Boucher, Thi Phuoc Yen Tran, Louis Harris, Jeffery Hall, François Dubeau, Ismail Mohamed, Alain Bouthillier, Dang Khoa Nguyen
OBJECTIVE: The precuneus is a complex and highly connected structure located in the medial portion of the superior parietal lobule. The clinical presentation of precuneal epilepsy is poorly characterized, mostly because these patients have seldom been distinguished from those with other types of parietal lobe epilepsy. The present study aims to improve the understanding of precuneal epilepsy by detailing its clinical features and surgical outcomes. METHODS: Six previously unreported cases of drug-resistant precuneal epilepsy investigated between 2002 and 2014 were retrospectively studied...
August 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28512354/neglect-patients-exhibit-egocentric-or-allocentric-neglect-for-the-same-stimulus-contingent-upon-task-demands
#17
Louise-Ann Leyland, Hayward J Godwin, Valerie Benson, Simon P Liversedge
Hemispatial Neglect (HN) is a failure to allocate attention to a region of space opposite to where damage has occurred in the brain, usually the left side of space. It is widely documented that there are two types of neglect: egocentric neglect (neglect of information falling on the individual's left side) and allocentric neglect (neglect of the left side of each object, regardless of the position of that object in relation to the individual). We set out to address whether neglect presentation could be modified from egocentric to allocentric through manipulating the task demands whilst keeping the physical stimulus constant by measuring the eye movement behaviour of a single group of neglect patients engaged in two different tasks (copying and tracing)...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28464421/low-frequency-rtms-of-the-unaffected-hemisphere-in-stroke-patients-a-systematic-review
#18
REVIEW
L Sebastianelli, V Versace, S Martignago, F Brigo, E Trinka, L Saltuari, R Nardone
The aim of this review was to summarize the evidence for the effectiveness of low-frequency (LF) repetitive transcranial magnetic stimulation (rTMS) over the unaffected hemisphere in promoting functional recovery after stroke. We performed a systematic search of the studies using LF-rTMS over the contralesional hemisphere in stroke patients and reviewed the 67 identified articles. The studies have been gathered together according to the time interval that had elapsed between the stroke onset and the beginning of the rTMS treatment...
December 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28429801/the-dizzy-patient-don-t-forget-disorders-of-the-central-vestibular-system
#19
REVIEW
Thomas Brandt, Marianne Dieterich
Vertigo and dizziness are among the most common complaints in neurology clinics, and they account for about 13% of the patients entering emergency units. In this Review, we focus on central vestibular disorders, which are mostly attributable to acute unilateral lesions of the bilateral vestibular circuitry in the brain. In a tertiary interdisciplinary outpatient dizziness unit, central vestibular disorders, including vestibular migraine, comprise about 25% of the established diagnoses. The signs and symptoms of these disorders can mimic those of peripheral vestibular disorders with sustained rotational vertigo...
June 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28359924/prolonged-cerebral-hyperperfusion-and-subcortical-low-intensity-on-fluid-attenuated-inversion-recovery-images-unusual-manifestation-after-removal-of-organized-chronic-subdural-hematoma
#20
Satoru Tanioka, Yu Sato, Kazuhiko Tsuda, Shigehiko Niwa, Hidenori Suzuki
BACKGROUND: Cerebral hyperperfusion sometimes occurs after removal of chronic subdural hematoma (CSH) and usually resolves within a few days without any symptoms. Subcortical low intensity (SCLI) on fluid-attenuated inversion recovery (FLAIR) magnetic resonance images is rare and has been reported in some diseases other than CSH. A case of organized CSH who suffered prolonged neurologic deterioration, SCLI, and cerebral hyperperfusion postoperatively is described. CASE DESCRIPTION: An 81-year-old man, presenting with left hemiparesis, underwent craniotomy for right organized CSH after 2 burr-hole surgeries...
May 2017: World Neurosurgery
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