View clinical trials related to Hemispatial Neglect.
Filter by:Anosognosia for hemispatial neglect is an intriguing phenomenon characterized by decreased awareness of spatial deficits, common in patients with right hemisphere stroke. However, it has not been examined as extensively as anosognosia for hemiplegia. In this study, we aim to investigate the relationship between the decrease in anosognosia for neglect and the improvement of spatial deficits.
Music Neglect Training has been developed for patients with hemispatial neglect to improve their attention on the left side. The purpose of this study was to examine the immediate and carry-over effect of Musical Neglect Training on unilateral visual neglect. Standardized assessments (Albert's test and Line Bisection Test) were used to measure a range of visual field. A total of 6 musical exercises with tone bars which are aligned horizontally helped to improve attention and perception of the visual field on the left side.
Brain functions are supported by multiple cell types, including neuronal and non-neuronal cells that are connected into complex networks. When the connectivity between those cells is altered or disrupted, the functioning of the brain is impaired. In stroke, the interruption of blood supply to the neural circuits results in connectivity damage and permanent disabilities. Experimental evidence suggests that some types of brain state, including sleep, can protect brain tissue from stroke and "repair" the damaged circuits. This project will investigate the neuronal mechanism underlying the protective effect of sleep on brain connectivity and network activity. To this end, the investigators will use a collection of state-of-the-art technologies including high-density electroencephalography (hd-EEG), transcranial magnetic stimulation (TMS) and transcranial alternating current stimulation (tACS). Perspectives include a better understanding of the causes and consequences of the perturbed electrical activity of the brain during sleep in stroke patients.
The presented study investigates standardized visual cueing in reading and visual spatial task as a treatment method for spatial neglect. In a randomized controlled design patients receive either cued reading and visual spatial tasks (intervention) or treatment which is unspecific to neglect (control). In the intervention condition, patients with left-sided neglect receive intense training, including reading and visual spatial task with standardized and adapted visual cueing by the therapist. Improvements in reading and visual spatial tasks lead to a reduction of cues by the therapist. Accordingly, the patient has to apply self-cueing over time in order to solve the task. For the control condition, all patients receive unspecific treatment without any standardized adapted cueing implemented by the therapist. To enhance the effectivity of cueing in reading and visual spatial tasks, the investigators additionally conduct parietal transcranial direct current stimulation (tDCS) in those patients without tDCS exclusion criteria (see exclusion criteria below). It is hypothesised that systematic and adaptive therapeutic cueing leads to a significant reduction of omissions of word and word parts in reading. UPDATE: No Add-on tDCS was performed since it was not applicable for our severly impaired patients due to the strict exclusion criteria of tDCS.
The purpose of this study is to examine measurement of unilateral neglect post stroke. Although a number of clinical assessments are used to measure neglect, it is unclear whether items from some of the most commonly used assessments are able to effectively and comprehensively measure neglect. This study will determine whether these assessments measure different aspects of neglect and whether items from various neglect assessments can be combined to more effectively measure neglect.
This project is designed to test a lightweight, portable, computerized pair of glasses that will help reduce some of the cognitive deficits seen in patients who have suffered damage to their right cerebral hemisphere.
Purpose: Stroke is a common cause of death and disability in Canada. Injury to the right hemisphere of the brain and the parietal cortex in particular, is common and results in a disorder known as 'neglect' in 40% to 95% of patients. These patients fail to attend to or respond to events occurring in left space; the disorder is devastating for the patient and their caregivers with the patient becoming dependent on assistance for most activities of daily life (ADLs). The project will implement two visual working memory (VWM) training programs to explore the influence of VWM training on neglect symptoms as well as activities of daily life. Hypothesis: It is hypothesised that SWM training protocols will lead to improvements of neglect symptoms as well as improvement in ADLs. The project will develop a novel rehabilitation strategy for treating the neglect syndrome. Evidence from research in healthy participants employing video games to improve cognition along with research using working memory training protocols showing a broad range of benefits accruing to both trained and untrained tasks, suggests that the investigators approach has great potential to improve the core deficits of the neglect syndrome. Thus, WM training represents a promising avenue for rehabilitating neglect patients who demonstrate core deficits in both spatial attention and VWM to be highly interrelated functions.
Attention can be defined as the preparedness to rapidly and accurately respond to stimuli coming from the investigators environment and to effectively select between relevant and irrelevant information. According to a current model, visual attentional control is based on two separate groups of brain regions, so called brain networks. These networks control different attentional aspects (e.g., spatial/non-spatial attention) and they interact with each other. A disruption of these interactions can lead to attentional disorders such as hemispatial neglect. Patients with hemispatial neglect have difficulties directing their attention to the left visual field and they act as though the latter does not exist. To date, the interactions between the two attentional networks are poorly understood. The aim of this study consists in further clarifying different aspects of these interactions and their influence on visual perception in healthy participants and in patients with hemispatial neglect. Transcranial magnetic stimulation (TMS) will be the principal method applied in this study. TMS is a painless and non-invasive method, with which the activity of brain areas can be influenced temporarily. This allows us to draw conclusions regarding the functions and interactions of these brain areas. This study is designed to have a significant impact on the basic understanding of attentional control in the human brain and it can benefit the comprehension and treatment of attentional disorders, such as hemispatial neglect.
The aim of this study is to evaluate the feasibility and usability of newly developed exergames on exploring the hemineglected space of left neglected stroke patients. Furthermore to understand the experience of living with visuospatial neglect and to explore the users' experiences (patients and clinic staff) with those new exergames.
There is a lack of effective rehabilitation methods for visio-spatial neglect (VSN). By using virtual technology, a new method (virtual reality, VR method) has been created which focuses on stimulating attention networks: top down scanning training in a 3D game, combined with intense visual, audio and tactile bottom-up stimulation, also including visuo-motor training. Objective. To evaluate clinical and functional improvement in stroke patients with VSN, as well as before and after training with the new VR method Method:- An intense visio spatial scanning training, enhanced by directed visual, audio and tactile stimulation cues and feedback, also including visio-motor activation was designed in a VR game. The in-house developed software was based on the Tetris game. The VR method consists of an interactive 3D environment: a desktop computer, a monitor, 3D glasses and a force feedback interface. 15 patients with chronic (>6 months) visio spatial neglect was included due to right-sided ischemia. A VR neglect test battery including a Posner task were repeated three times during a 5 weeks baseline before the training started (to establish the chronic state) and again after 15 hours training (3x1 h for 5 weeks). Evaluation of a new method for training attention after stroke causing visio spatial neglect. The method has been designed for home rehabilitation and is well suited for a tele-medicine approach. It was built with standard components and is easy to manufacture at a low cost. The idea is to give access to effective training, to make it available at the stroke unit with the possibility for the patient to loan it it at discharge for home rehabilitation. The concept of an all in one, easy-to-use device for testing, training and outcome evaluation should be beneficial These preliminare results has been promising and indicates that the RehAtt™ method could become an further developed into an effective and stimulating intervention tool that would lower rehabilitation costs and reduce tiresome travelling to hospitals for training.