scholarly journals Tactile-Foot Stimulation Can Assist the Navigation of People with Visual Impairment

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ramiro Velázquez ◽  
Edwige Pissaloux ◽  
Aimé Lay-Ekuakille
Keyword(s):  
Visual Impairment ◽  
Tactile Stimulation ◽  
Visual Impairments ◽  
Assistive Devices ◽  
Tactile Information ◽  
Human Navigation ◽  
Plantar Surface ◽  
The Third ◽  
Tactile Interfaces ◽  
Technological Improvements

Background.Tactile interfaces that stimulate the plantar surface with vibrations could represent a step forward toward the development of wearable, inconspicuous, unobtrusive, and inexpensive assistive devices for people with visual impairments.Objective.To study how people understand information through their feet and to maximize the capabilities of tactile-foot perception for assisting human navigation.Methods.Based on the physiology of the plantar surface, three prototypes of electronic tactile interfaces for the foot have been developed. With important technological improvements between them, all three prototypes essentially consist of a set of vibrating actuators embedded in a foam shoe-insole. Perceptual experiments involving direction recognition and real-time navigation in space were conducted with a total of 60 voluntary subjects.Results.The developed prototypes demonstrated that they are capable of transmitting tactile information that is easy and fast to understand. Average direction recognition rates were 76%, 88.3%, and 94.2% for subjects wearing the first, second, and third prototype, respectively. Exhibiting significant advances in tactile-foot stimulation, the third prototype was evaluated in navigation tasks. Results show that subjects were capable of following directional instructions useful for navigating spaces.Conclusion.Footwear providing tactile stimulation can be considered for assisting the navigation of people with visual impairments.

Experiences of Older Adults who Stopped Driving Because of their Visual Impairments: Part 3

2002 ◽  
Vol 96 (10) ◽  
pp. 701-710 ◽  
Author(s):  
L. Penny Rosenblum ◽  
Anne L. Corn
Keyword(s):  
Older Adults ◽  
Visual Impairment ◽  
Visual Impairments ◽  
Advantages And Disadvantages ◽  
The Third

This is the third in a series that describes the experiences of 162 adults, age 60 and older, who stopped driving due to a visual impairment. The participants responded to open-ended questions concerning the advantages and disadvantages of stopping driving, strategies they used in obtaining rides, and advice they would offer to adults who are about to stop driving. Participants spoke about the need to be proactive nondrivers.

Employment Concerns of People with Blindness or Visual Impairments

1992 ◽  
Vol 86 (4) ◽  
pp. 185-187 ◽  
Author(s):  
K.E. Wolffe ◽  
R.T. Roessler ◽  
K.F. Schriner
Keyword(s):  
Visual Impairment ◽  
Job Search ◽  
Service Providers ◽  
Visual Impairments ◽  
Search Strategies ◽  
Assistive Devices ◽  
American Council ◽  
Career Opportunities ◽  
Employment Concerns

Seventy-six consumer members of the American Council of the Blind with primary disabilities of blindness or visual impairment responded to an Employment Concerns Questionnaire which was developed by consumers, advocates, and service providers. Respondents’ concerns included their not receiving adequate help in developing job search strategies, in obtaining information on career opportunities, and in financing assistive devices.

The Association Between Presenting Visual Impairment, Health, and Employment Status

2021 ◽  
Vol 115 (3) ◽  
pp. 204-214
Author(s):  
Michele C. McDonnall ◽  
Zhen S. McKnight
Keyword(s):  
Visual Impairment ◽  
Labor Force ◽  
Visual Impairments ◽  
Data Sets ◽  
Chi Square ◽  
Health And Nutrition ◽  
Labor Force Status ◽  
The People ◽  
Self Reports ◽  
Study Participants

Introduction: The purpose of this study was to investigate the effect of visual impairment and correctable visual impairment (i.e., uncorrected refractive errors) on being out of the labor force and on unemployment. The effect of health on labor force status was also investigated. Method: National Health and Nutrition Examination Survey (NHANES) data from 1999 to 2008 ( N = 15,650) was used for this study. Participants were classified into three vision status groups: normal, correctable visual impairment, and visual impairment. Statistical analyses utilized were chi-square and logistic regression. Results: Having a visual impairment was significantly associated with being out of the labor force, while having a correctable visual impairment was not. Conversely, having a correctable visual impairment was associated with unemployment, while having a visual impairment was not. Being out of the labor force was not significantly associated with health for those with a visual impairment, although it was for those with correctable visual impairments and normal vision. Discussion: Given previous research, it was surprising to find that health was not associated with being out of the labor force for those with visual impairments. Perhaps other disadvantages for the people with visual impairments identified in this study contributed to their higher out-of-the-labor-force rates regardless of health. Implications for practitioners: Researchers utilizing national data sets that rely on self-reports to identify visual impairments should realize that some of those who self-identify as being visually impaired may actually have correctable visual impairments. Current research is needed to understand why a majority of people with visual impairments are not seeking employment and have removed themselves from the labor force.

Using Labels: A Study of Client Preference

1990 ◽  
Vol 84 (5) ◽  
pp. 218-220 ◽  
Author(s):  
P. Abaglo ◽  
J. Downing
Keyword(s):  
Visual Impairment ◽  
Visual Impairments ◽  
Handicapped Person ◽  
Significant Preference ◽  
Client Preference ◽  
Adolescents And Adults ◽  
Visually Handicapped

Fifty-one adolescents and adults with a variety of visual impairments were interviewed to determine their preference for different labels used to describe them. Participants were asked to choose among labels that state the disability before the person (“the visually handicapped person”) and labels that state the person before the disability (“the person with a visual impairment”). Results showed no statistically significant preference. Reasons provided by participants for their preference were characterized and presented thematically. The importance of stressing abilities and needs to be treated as normal were the most common reasons given by the participants for their selections. Participants who chose the person-first labels cited these reasons more often than those who chose the disability-first labels.

Olfactory modulation of barrel cortex activity during active whisking and passive whisker stimulation

2021 ◽  
Author(s):  
Anthony Renard ◽  
Evan Harrell ◽  
Brice Bathallier
Keyword(s):  
Facial Nerve ◽  
Calcium Imaging ◽  
Tactile Stimulation ◽  
Barrel Cortex ◽  
Neuronal Responses ◽  
Population Activity ◽  
Tactile Information ◽  
Large Populations ◽  
Whisker Stimulation ◽  
The Impact

Abstract Rodents depend on olfaction and touch to meet many of their fundamental needs. The joint significance of these sensory systems is underscored by an intricate coupling between sniffing and whisking. However, the impact of simultaneous olfactory and tactile inputs on sensory representations in the cortex remains elusive. To study these interactions, we recorded large populations of barrel cortex neurons using 2-photon calcium imaging in head-fixed mice during olfactory and tactile stimulation. We find that odors alter barrel cortex activity in at least two ways, first by enhancing whisking, and second by central cross-talk that persists after whisking is abolished by facial nerve sectioning. Odors can either enhance or suppress barrel cortex neuronal responses, and while odor identity can be decoded from population activity, it does not interfere with the tactile representation. Thus, barrel cortex represents olfactory information which, in the absence of learned associations, is coded independently of tactile information.

Multi-channel Tactile Feedback Based on User Finger Speed

2021 ◽  
Vol 5 (ISS) ◽  
pp. 1-17
Author(s):  
Yosra Rekik ◽  
Edward Lank ◽  
Adnane Guettaf ◽  
Prof. Laurent Grisoni
Keyword(s):  
Channel Selection ◽  
Tactile Feedback ◽  
Interactive Systems ◽  
Controlled Experiment ◽  
Tactile Information ◽  
Tactile Interfaces

Alongside vision and sound, hardware systems can be readily designed to support various forms of tactile feedback; however, while a significant body of work has explored enriching visual and auditory communication with interactive systems, tactile information has not received the same level of attention. In this work, we explore increasing the expressivity of tactile feedback by allowing the user to dynamically select between several channels of tactile feedback using variations in finger speed. In a controlled experiment, we show that a user can learn the dynamics of eyes-free tactile channel selection among different channels, and can reliable discriminate between different tactile patterns during multi-channel selection with an accuracy up to 90% when using two finger speed levels. We discuss the implications of this work for richer, more interactive tactile interfaces.

Effects of a Disability Simulation Activity on the Achievement, Efficacy, Attitudes, and Interests of Preservice Professionals

2021 ◽  
pp. 0145482X2110466
Author(s):  
Alexandra Hollo ◽  
Carla B. Brigandi ◽  
Casey M. Jelsema ◽  
Mingming Shi
Keyword(s):  
Visual Impairment ◽  
Skill Acquisition ◽  
Professional Education ◽  
Low Vision ◽  
Visual Impairments ◽  
Cluster Randomized Trial ◽  
Single Class ◽  
Related Services ◽  
Disability Simulation ◽  
Experimental Group

Introduction: Disability simulation activities are commonly used for various purposes in higher education; however, instructors may be unaware of controversies regarding their use. The purpose of this research was to assess the effects of an activity using low vision goggles to simulate visual impairment in the context of an undergraduate course in special education. We highlight the need for instructors to consider the appropriateness of disability simulation activities given possible countertherapeutic effects. Methods: In this cluster-randomized trial, 11 classes (248 students) of preservice education and related services professionals were randomized to experimental (lecture + simulation) or control (lecture only) conditions. During a single class session, all students received basic information about visual impairment and watched a video on being a human guide. Students in the experimental group then practiced guiding and being guided while wearing low vision goggles. At the end of class, students completed three Likert-type surveys and later completed a quiz using publisher-developed materials. Results: Results showed individuals in the experimental group reported higher levels of interest and enjoyment than those in the control condition; however, there were no statistically significant differences in attitudes toward persons with visual impairments, confidence or self-efficacy for working with students with visual impairments, content knowledge, or perceptions of activity usefulness. Discussion: Findings of positive engagement in the absence of harmful effects indicate that disability simulation activities should be neither promoted nor denigrated wholesale; instead, instructors must weigh carefully potential benefits and drawbacks. Discussion includes considerations for professional education programs in using such simulations to promote skill acquisition via positive and respectful learning experiences. Implications for practitioners: Instructors who use disability simulation activities are encouraged to consider whether to discontinue this practice or incorporate principles recommended by the disability community and assess outcomes to ensure they are not perpetuating harmful stereotypes.

Behavioral Correlates of Depression Among Adults with Visual Impairments

2021 ◽  
pp. 0145482X2110466
Author(s):  
Justin A. Haegele ◽  
Xihe Zhu ◽  
Sean Healy
Keyword(s):  
Physical Activity ◽  
Visual Impairment ◽  
Sleep Duration ◽  
Visual Impairments ◽  
The United States ◽  
Sitting Time ◽  
Hierarchical Regression ◽  
Regression Analyses ◽  
The Impact ◽  
Negative Predictor

Introduction: This study sought to examine: (a) the associations between physical activity, sedentary time, and sleep duration, as discrete behaviors, with depression among adults with visual impairments; and (b) the impact of meeting none, one, two, or three of the guidelines for these behaviors on depression among adults with visual impairments. Materials: One hundred eighty-two ( Mage = 44.8) adults with visual impairments, recruited via email through two visual impairment organizations in the United States, completed the International Physical Activity Questionnaire–Short Form, a sleep duration question, the Major Depression Inventory, and a demographic questionnaire. Based on results from the questionnaires, dichotomous variables for meeting or not meeting physical activity, sleep, and sitting guidelines were created. Data were analyzed using three components: a descriptive analysis, Pearson product-moment correlation analyses, and hierarchical regression analyses. Results: Overall, 14.8% of participants were categorized as having some degree of depression. Meeting the sleep guideline was a significant negative predictor of depression scores in the hierarchical regression analyses. The number of guidelines met was a negative predictor for depression score controlling for other variables. Discussion: Adequate sleep, as well as meeting all three guidelines synergistically, was meaningful in influencing depression among this population. The current study’s results should prompt the continued examination of health-behaviors among adults with visual impairment using a more holistic 24-hour activity cycle framework. Implications for practitioners: This study supports the utilization of multi-behavioral interventions to reduce the risk of depression by enhancing physical activity and sleep, while reducing sitting time, among this population.

scholarly journals Neuroplasticity in visual impairments

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Paulo Ramiler Silva ◽  
Tiago Farias ◽  
Fernando Cascio ◽  
Levi Dos Santos ◽  
Vinícius Peixoto ◽  
...  
Keyword(s):  
Systematic Review ◽  
Visual Acuity ◽  
Visual Impairment ◽  
Visual Impairments ◽  
Cortical Reorganization ◽  
Pubmed Database ◽  
Visual Areas ◽  
Visual Acuity Loss ◽  
The Brain

The visual acuity loss enables the brain to access new pathways in the quest to overcome the visual limitation and this is wellknown as neuroplasticity which have mechanisms to cortical reorganization. In this review, we related the evidences about the neuroplasticity as well as cortical anatomical differences and functional repercussions in visual impairments. We performed a systematic review of PUBMED database, without date or status publication restrictions. The findings demonstrate that the visual impairment produce a compensatory sensorial effect, in which non-visual areas are related to both cross (visual congenital) and multimodal (late blind) neuroplasticity.

Adapting the Brief COPE for Chinese Adolescents with Visual Impairments

2017 ◽  
Vol 111 (1) ◽  
pp. 20-32 ◽  
Author(s):  
Wei Yuan ◽  
Li-fang Zhang ◽  
Bing Li
Keyword(s):  
Visual Impairment ◽  
Psychometric Properties ◽  
Visually Impaired ◽  
Sample Selection ◽  
Visual Impairments ◽  
Self Esteem ◽  
Three Dimensions ◽  
Adolescent Students ◽  
Brief Cope ◽  
Chinese Adolescent

Introduction The present research pioneered the effort in assessing adolescents’ coping with visual impairment through adapting the Brief COPE in an eastern context. The first study preliminarily explored the applicability of the Brief COPE to Chinese adolescent students with visual impairments. Based on the results, the Brief COPE was modified and renamed, COPE-Revised. The second study tested the internal psychometric properties and the criterion-related validity of the COPE-Revised. Criterion-related validity was obtained through investigating the correlation between coping and self-esteem. Method The first study involved 176 adolescent students with visual impairments, comprising a survey using the Brief COPE and follow-up interviews. In the second study, another cohort of 170 adolescent students with visual impairments responded to the COPE-Revised together with an inventory assessing self-esteem. Results The COPE-Revised showed adequate psychometric properties. Three higher-order factors, namely self-directed, other-directed, and relinquished-control coping, were identified. The way in which self-esteem was correlated with these three dimensions of coping provided evidence for the criterion-related validity of the COPE-Revised. Discussion The findings indicate that the COPE-Revised has sound psychometric properties among adolescents with visual impairments. Limitations regarding the sample-selection bias and the means of questionnaire survey among visually impaired adolescents are noted. Implications for practitioners This research tailored a coping inventory for educators, counselors, and researchers who are interested in investigating adolescents’ ability to cope with visual impairments. The relationship between coping with visual impairment and self-esteem found in this research has reference significance for educational and counseling services for visually impaired adolescents.

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