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"Hemispatial neglect"

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https://www.readbyqxmd.com/read/29316244/hemispatial-neglect-and-serial-order-in-verbal-working-memory
#1
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
#2
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
#3
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)...
December 2, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/29189299/global-orientation-in-space-and-the-lateralization-of-brain-functions
#4
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
#5
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
#6
Marianne E Klinke, Haukur Hjaltason, Guðný Berg F Ra 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...
November 4, 2017: 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
#7
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...
October 27, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29050381/space-based-bias-of-covert-visual-attention-in-complex-regional-pain-syndrome
#8
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
#9
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...
October 4, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28802812/noninvasive-brain-stimulation-improves-hemispatial-neglect-after-stroke-a-systematic-review-and-meta-analysis
#10
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...
August 9, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28756213/noradrenergic-antagonists-mitigate-amphetamine-induced-recovery
#11
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
#12
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
#13
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
#14
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...
May 2, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28429801/the-dizzy-patient-don-t-forget-disorders-of-the-central-vestibular-system
#15
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
#16
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
https://www.readbyqxmd.com/read/28323684/shifting-spatial-neglect-with-repeated-line-bisections-possible-role-of-lateralized-attentional-fatigue
#17
Mary Woods, John B Williamson, Keith D White, Charles G Maitland, Kenneth M Heilman
BACKGROUND AND OBJECTIVE: Many patients who have signs of neglect immediately after a right hemisphere stroke remain disabled even when they improve on tests of neglect. Few patients are tested for attentional persistence and fatigue despite their importance in many instrumental activities. To investigate whether stimulus repetition might alter the allocation of attention, we repeatedly tested a patient 16 weeks after she developed hemispatial neglect from a right hemisphere stroke. METHODS: During each of three testing sessions given in 1 day, we asked the patient to bisect 90 lines of two lengths, presented in 30-trial blocks in three locations: left, center, and right of her midsagittal plane, partially counterbalanced across sessions...
March 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28290071/structural-connectivity-in-spatial-attention-network-reconstruction-from-left-hemispatial-neglect
#18
Takaaki Hattori, Kenji Ito, Chika Nakazawa, Yoshiyuki Numasawa, Mayumi Watanabe, Shigeki Aoki, Hidehiro Mizusawa, Sumio Ishiai, Takanori Yokota
Left hemispatial neglect (neglect) is an impaired state of spatial attention. We aimed to reconstruct structural connectivity in the spatial attention network and to identify disconnection patterns underlying neglect. We enrolled 59 right-handed patients who had their first-ever infarction in the right hemisphere and classified them into neglect group (34 patients with neglect) and control group (25 patients without neglect). The neglect group was further subcategorized into 6 subgroups based on infarcted vascular territories...
March 13, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28272901/attentional-impairments-following-right-hemisphere-damage-with-and-without-hemispatial-neglect-a-comparative-study
#19
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...
March 8, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/28149091/corpus-callosum-and-neglect-syndrome-clinical-findings-after-meningioma-removal-and-anatomical-review
#20
REVIEW
David Gomes, Madalena Fonseca, Maria Garrotes, Maria Rita Lima, Marta Mendonça, Mariana Pereira, Miguel Lourenço, Edson Oliveira, José Pedro Lavrador
Two types of neglect are described: hemispatial and motivational neglect syndromes. Neglect syndrome is a neurophysiologic condition characterized by a malfunction in one hemisphere of the brain, resulting in contralateral hemispatial neglect in the absence of sensory loss and the right parietal lobe lesion being the most common anatomical site leading to it. In motivational neglect, the less emotional input is considered from the neglected side where anterior cingulate cortex harbors the most frequent lesions...
January 2017: Journal of Neurosciences in Rural Practice
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