Reduced visual acuity is mirrored in low vision imagery.
Research has examined the nature of visual imagery in normally sighted and blind subjects, but not in those with low vision. Findings with normally sighted subjects suggest that imagery involves primary visual areas of the brain. Since the plasticity of visual cortex appears to be limited in adultho...
| Publicado en: | British Journal of Psychology Vol. 112; no. 3; pp. 611 - 628 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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Wiley-Blackwell
Aug2021
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=151285397&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 151285397 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00071269 BJP jtl: British Journal of Psychology issn: 00071269 maglogo: Y pubinfo: dt: Aug2021 vid: 112 iid: 3 pid: 480 pub: Wiley-Blackwell artinfo: ui: 151285397 10.1111/bjop.12493 ppf: 611 ppct: 17 formats: fmt: – @attributes: type: T – @attributes: type: C – @attributes: type: P size: 477KB tig: atl: Reduced visual acuity is mirrored in low vision imagery. aug: au: Arditi, Aries Legge, Gordon Granquist, Christina Gage, Rachel Clark, Dawn affil: Visibility Metrics LLC, Chappaqua New York,, USA Department of Psychology, University of Minnesota, Minneapolis Minnesota,, USA su: Imagination Brain physiology Visual fields Low vision Occipital lobe Visual acuity Visual perception Questionnaires Age factors in disease Vision disorders sug: subj: Imagination Brain physiology Visual fields Low vision Occipital lobe Visual acuity Visual perception Questionnaires Age factors in disease Vision disorders keyword: low vision vision impairment visual acuity visual cognition visual field visual imagery low vision vision impairment visual acuity visual cognition visual field visual imagery ab: Research has examined the nature of visual imagery in normally sighted and blind subjects, but not in those with low vision. Findings with normally sighted subjects suggest that imagery involves primary visual areas of the brain. Since the plasticity of visual cortex appears to be limited in adulthood, we might expect imagery of those with adult‐onset low vision to be relatively unaffected by these losses. But if visual imagery is based on recent and current experience, we would expect images of those with low vision to share some properties of impaired visual perception. We examined key parameters of mental images reported by normally sighted subjects, compared to those with early‐ and late‐onset low vision, and with a group of subjects with restricted visual fields using an imagery questionnaire. We found evidence that those with reduced visual acuity report the imagery distances of objects to be closer than those with normal acuity and also depict objects in imagery with lower resolution than those with normal visual acuity. We also found that all low vision groups, like the normally sighted, image objects at a substantially greater distance than when asked to place them at a distance that 'just fits' their imagery field (overflow distance). All low vision groups, like the normally sighted, showed evidence of a limited visual field for imagery, but our group with restricted visual fields did not differ from the other groups in this respect. We conclude that imagery of those with low vision is similar to that of those with normal vision in being dependent on the size of objects or features being imaged, but that it also reflects their reduced visual acuity. We found no evidence for a dependence on imagery of age of onset or number of years of vision impairment. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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