000131543 001__ 131543
000131543 005__ 20240212142201.0
000131543 0247_ $$2doi$$a10.1088/1741-2552/abb9be
000131543 0248_ $$2sideral$$a120538
000131543 037__ $$aART-2020-120538
000131543 041__ $$aeng
000131543 100__ $$0(orcid)0000-0002-5656-1582$$aSanchez-Garcia, M.$$uUniversidad de Zaragoza
000131543 245__ $$aInfluence of field of view in visual prostheses design: Analysis with a VR system
000131543 260__ $$c2020
000131543 5060_ $$aAccess copy available to the general public$$fUnrestricted
000131543 5203_ $$aObjective.Visual prostheses are designed to restore partial functional vision in patients with total vision loss. Retinal visual prostheses provide limited capabilities as a result of low resolution, limited field of view and poor dynamic range. Understanding the influence of these parameters in the perception results can guide prostheses research and design.Approach.In this work, we evaluate the influence of field of view with respect to spatial resolution in visual prostheses, measuring the accuracy and response time in a search and recognition task. Twenty-four normally sighted participants were asked to find and recognize usual objects, such as furniture and home appliance in indoor room scenes. For the experiment, we use a new simulated prosthetic vision system that allows simple and effective experimentation. Our system uses a virtual-reality environment based on panoramic scenes. The simulator employs a head-mounted display which allows users to feel immersed in the scene by perceiving the entire scene all around. Our experiments use public image datasets and a commercial head-mounted display. We have also released the virtual-reality software for replicating and extending the experimentation.Main results.Results show that the accuracy and response time decrease when the field of view is increased. Furthermore, performance appears to be correlated with the angular resolution, but showing a diminishing return even with a resolution of less than 2.3 phosphenes per degree.Significance.Our results seem to indicate that, for the design of retinal prostheses, it is better to concentrate the phosphenes in a small area, to maximize the angular resolution, even if that implies sacrificing field of view.
000131543 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/BES-2016-078426$$9info:eu-repo/grantAgreement/ES/MINECO/RTI2018-096903-B-I00
000131543 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000131543 590__ $$a5.379$$b2020
000131543 591__ $$aNEUROSCIENCES$$b66 / 273 = 0.242$$c2020$$dQ1$$eT1
000131543 591__ $$aENGINEERING, BIOMEDICAL$$b20 / 89 = 0.225$$c2020$$dQ1$$eT1
000131543 592__ $$a1.594$$b2020
000131543 593__ $$aCellular and Molecular Neuroscience$$c2020$$dQ1
000131543 593__ $$aBiomedical Engineering$$c2020$$dQ1
000131543 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000131543 700__ $$0(orcid)0000-0002-6741-844X$$aMartinez-Cantin, R.$$uUniversidad de Zaragoza
000131543 700__ $$0(orcid)0000-0002-8479-1748$$aBermudez-Cameo, J.$$uUniversidad de Zaragoza
000131543 700__ $$0(orcid)0000-0001-5209-2267$$aGuerrero, J.J.$$uUniversidad de Zaragoza
000131543 7102_ $$15007$$2520$$aUniversidad de Zaragoza$$bDpto. Informát.Ingenie.Sistms.$$cÁrea Ingen.Sistemas y Automát.
000131543 773__ $$g17, 5 (2020), 056002 [14 pp]$$pJ. neural eng.$$tJournal of Neural Engineering$$x1741-2560
000131543 8564_ $$s2878083$$uhttps://zaguan.unizar.es/record/131543/files/texto_completo.pdf$$yPostprint
000131543 8564_ $$s1683700$$uhttps://zaguan.unizar.es/record/131543/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000131543 909CO $$ooai:zaguan.unizar.es:131543$$particulos$$pdriver
000131543 951__ $$a2024-02-12-13:55:09
000131543 980__ $$aARTICLE