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135 results for “Visual Impairment”
Relationship Between Neurological Disability and Visual Impairment in Patients With ALS or Friedreich's Ataxia
ClinicalTrials.gov study NCT03285204. IPD Sharing: NO. Countries: 1. Publications: 0.
Nonvisual Foot Examination for People With Diabetes and Visual Impairment
ClinicalTrials.gov study NCT02102958. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Effectiveness of Portable Electronic Vision Enhancement Systems (p-EVES) for Near Vision in Visual Impairment
ClinicalTrials.gov study NCT01701700. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Traditional Exercise RCT in Visually Impaired Adults
ClinicalTrials.gov study NCT07265024. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
The Impact of Rehabilitation on Quality of Life in Visually Impaired
ClinicalTrials.gov study NCT00013403. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Investigating the Cognitive Source of Visual Working Memory Impairment in Schizophrenia
ClinicalTrials.gov study NCT05496413. IPD Sharing: NO. Countries: 1. Publications: 0.
Assessing the Impact of eSight Go At-Home Usage in Individuals With Visual Impairment
ClinicalTrials.gov study NCT07149259. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Causes of Visual Impairment Among Patients Applying for the Visually Disability Certification
ClinicalTrials.gov study NCT06518148. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Data from: Outcomes of cataract surgery in urban and rural population in the South Indian State of Andhra Pradesh: Rapid Assessment of Visual Impairment (RAVI) Project
Open the record for dataset details and reuse information.
Gaze orienting in the social world: An exploration of the role played by caregiving vocal and tactile behaviors in infants with visual impairment and in sighted controls
<p>This database includes the raw data linked with the paper “Gaze orienting in the social world: An exploration of the role played by caregiving vocal and tactile behaviors in infants with visual impairment and in sighted controls”, published on Brain Sciences Journal, doi: 10.5281/zenodo.11121406. In this paper we report on data on the association between maternal vocal and tactile behaviors and the gaze orientation of visually impaired (VI) infants compared to sighted controls (SI).</p> <p>Procedures</p> <p>45 infants (24 VI and 21 SI) and their mothers participated in a videorecorded 6-minute observational procedure including the well-acknowledged Face-to-Face Still-Face (FFSF) paradigm. For the purposes of this study, only the play and still episodes were analyzed. Videos were micro-analytically coded (in 2 seconds bins) for infant’s gaze orientation (unfocused GO, object GO or mother GO) and for mother’s vocal production (socio-cognitive or nurturing vocalizations) and touch behavior (pragmatic or nurturing touch).</p> <p>Analytical plan</p> <p>Correlation statistics (Spearman's rho) were used to test the associations between maternal behaviors and infants' gaze orientation in the play episode for the two groups. Two separate analyses of variance (ANOVA) were performed to compare the gaze orientation of the two groups during the play and still episodes. Two separate analyses of variance (ANOVA) were performed to compare the gaze orientation among three groups of children with different vision levels (severe, moderate, and sighted) during the play and still episodes.</p> <p>Findings in brief</p> <p>Maternal vocalizations and touch were found to influence infants' gaze orientation differently in VI infants compared SI. In particular, for VI infants no specific caregiving behaviors emerged as associated with the social orienting of attention. The group comparisons during the play episode showed that controls were predominantly oriented to the mothers, while VI infants were less socially oriented. No differences between the two groups in GO emerged during the still face episode. The visual impairment severity did not emerge as linked with social attention.</p>
A Dataset and Machine Learning Approach to Classify and Augment Interface Elements of Household Appliances to Support People with Visual Impairment
<p>Here, we provide a dataset of images of interfaces from household appliances, where all interface elements are labled with one of five different types of interface elements. Further, we provide auxillary materials to use and extend the dataset.</p>
Efficacy and Safety Study of CNTO 2476 in Participants With Visual Acuity Impairment Associated With Geographic Atrophy (GA) Secondary to Age Related Macular Degeneration (AMD)
ClinicalTrials.gov study NCT02895815. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Identified important EEG channels in visually impaired subjects using recurrent analysis
<p>This database contains calculated channel significance indicators based on the application of recurrent analysis to EEG data, following the example of the article Runnova A, Selskii A, Emelyanova E, Zhuravlev M, Popova M, Kiselev A, Shamionov R. Modification of Joint Recurrence Quantification Analysis ( JRQA) for assessing individual characteristics from short EEG time series. Chaos. 2021;31(9):093116. doi: 10.1063/5.0055550. For each EEG channel of each subject, the channel significance indicator was separately calculated for all stimulus presentations in the cognitive test. The following is a description of the EEG setup, subjects, and experimental design.</p><p>To compare the performance of the method for identifying important channels, the frequency corresponding to the maximum amplitude and the central frequency of the spectrum were calculated using Fourier spectrum analysis. The latter was calculated so that the integral value of the probability density to the left of it and to the right of it were the same. This approach makes it possible to distinguish between high and low frequencies in the spectrum and, if necessary, evaluate them separately.</p><p>The values of the channel significance indicators for each subject are located in the «SR» folder. Frequencies corresponding to maximum amplitude are in folders «MaxFrequency». Center frequencies for all channels of each subject in the folder «CentralFrequency».</p><p>Data were recorded at 250 Hz sampling rate using the conventional monopolar method of registration with two reference points and N = 21 electrodes, located according to the "10–20" scheme. The adhesive Ag/AgCl electrodes in prewired head caps were used to detect EEG signals. Two reference electrodes, A1 and A2, were located on mastoids, while the ground electrode N was placed above the forehead. The EEG signals were filtered by a band-pass filter with cutoff points at 1.5 Hz (HP) and 35 Hz (LP) and a 50 Hz notch filter.</p><p>Children of middle school age participated as study subjects. The biomedical data were processed honoring the confidentiality and anonymity of the study respondents. Experimental work was carried out in compliance with ethical standards and approved by the local committee on research ethics at Saratov State University (Saratov, RF). Prior to the study, written consent of the parents was obtained for conducting neuropsychological experimental work, the subsequent data processing and publication of the results. The parents were present during all experiments in accordance with the requirements of the Russian Federation legislation.</p><p>The following design of experimental work was employed. All experiments were conducted in the mornings, on a typical school day. One of the classrooms was darkened with blinds. Children sat in comfortable chairs, adjusted to their heights to attain a comfortable stable position, leaning back in the chair. Their feet were flat on the floor. The total experimental work time was approximately 25 minutes for each subject.</p><p>The experiment included three short stages: background state of quiet wakefulness with eyes closed (about 3 minutes), simple cognitive test for counting sound signals (about 20 minutes), and repeated background state of quiet wakefulness with eyes closed (about 2 minutes). During the cognitive test, groups of short sounds were given: one to four per group. During listening, the subject was instructed to determine whether he perceived an even or an odd number of sounds in a single stimulus group. Depending on his assessment, the subject pressed the left or right buttons of a special remote control. Between groups of sound signals there was a silent pause lasting 5 to 11 seconds. Each child was analyzing these sound stimuli for 3 minutes, followed by a rest break lasting about 2 minutes.</p><p>The experimental work involved 4 boys 10 years of age (123,2±5,1 months). All children belonged to the health group I the Order of the Ministry of the Russian Federation Healthcare of March 13, 2019, No. 124n. They had no infectious or other acute illnesses one month prior to the experiment. Additionally, all children had no identified chronic diseases.</p>
Visual function and neuropsychological profile in children with Cerebral Visual Impairment
<p>This database includes the raw data linked with the paper “Visual function and neuropsychological profile in children with Cerebral Visual Impairment” published on “Children”.</p> <p>In this paper, we aimed to a) describe the clinical and neuropsychological profiles b) to investigate the possible effects of visual functions on neuropsychological performance of a cohort of children diagnosed with CVI.</p> <p>The first sheet of the spreadsheet includes data on medical history, visual functions neuropsychological evaluations of the 51 subjects included in the descriptive study. The second sheet includes data on visual functions and neuropsychological evalutations for correlation analyses. All the data, except for age, are encoded as reported in the third sheet.</p> <p>Fifty-one children with CVI were included in the descriptive study, and 40 children were selected for the correlation analyses. For each participant, we collected data on neuropsychological assessment, basic visual functions, global development features.</p> <p>Results showed that oculomotor dysfunction involving saccades and smooth pursuit may be a core symptom of CVI and might have a significant impact on cognitive visual and other neuropsychological abilities. Furthermore, visual acuity and contrast sensitivity may influence cognitive, cognitive visual and academic performances. Our findings suggest the importance of a comprehensive assessment of both visual and neuropsychological functions in children when CVI is suspected, to provide a more comprehensive functional profile and define the best habilitation strategy to sustain functional vision.</p>
Clinical assessment of the TechArm system on visually impaired and blind children during uni- and multi-sensory perception tasks
<p>Introduction</p> <p>This dataset includes the raw data linked with the paper “Clinical assessment of the TechArm system on visually impaired and blind children during uni- and multi-sensory perception tasks ”.</p> <p>In this paper, we validated the TechArm system on a pediatric population of visually impaired (low-vision and blind), and sighted children.</p> <p>Raw data concerning sighted children are collected in the first sheet, while raw data for visually impaired children are in the second sheet. Encoding is available in the third sheet.</p> <p>Methods</p> <p>8 blind children (B, mean age 10.50 ± 4.21 y.o.), 23 children with low vision (LV, mean age 92 9.87 ± 3.09 y.o.), and 23 age-matched sighted children (S, mean age 9.83 ± 3.01 y.o.) were enrolled in the study. Four TechArm units were used to deliver uni- (audio or tactile) or multi-sensory stimulation (audio-tactile) on the participant’s arm, and subject was asked to evaluate the number of active units (see Martolini et al, Brain Sciences, 2021 for a presentation of the protocol).</p> <p>Results (in brief)</p> <p>Results showed no significant difference among groups (normal or impaired vision). Overall, we observed the best performance in tactile condition, while auditory accuracy was around chance level. Also, we found that the audio-tactile condition is better than the audio condition alone, suggesting that multisensory stimulation is beneficial when perceptual accuracy and precision are low. Interestingly, we observed that for low-vision children the accuracy in audio condition improved proportionally to the severity of the visual impairment. Our findings confirmed the TechArm system's effectiveness in assessing perceptual competencies in sighted and visually impaired children, and its potential to be used to develop personalized rehabilitation programs for people with visual and sensory impairments.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.