A summary of each of the journal articles
Using the South University Online Library, find two peer-reviewed journal articles on the filling-in phenomenon associated with blind spots. In your synopsis, you will include:
A summary of each of the journal articles
The main points discussed in each of the journal articles and how they relate to the week’s course and text readings
Your thoughts and perspectives regarding the concepts covered in each of the journal articles
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RECORD: 1
| Title: | Illusory stimuli can be used to identify retinal blind spots. |
| Authors: | Crossland MD; University College London Institute of Ophthalmology, London, United Kingdom. m.crossland@ucl.ac.uk Dakin SC Bex PJ |
| Source: | PloS one [PLoS One] 2007 Oct 24; Vol. 2 (10), pp. e1060. Date of Electronic Publication: 2007 Oct 24. |
| Publication Type: | Journal Article; Research Support, Non-U.S. Gov’t |
| Language: | English |
| Journal Info: | Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: Electronic Cited Medium: Internet ISSN: 1932- |
| Imprint Name(s): | Original Publication: San Francisco, CA : Public Library of Science |
| MeSH Terms: | Illusions* Visual Fields* Visual Perception* Scotoma/*pathology Visual Cortex/*anatomy & histology Adult ; Aged ; Aged, 80 and over ; Humans ; Models, Biological ; Ophthalmoscopy/methods ; Optic Disk ; Photic Stimulation ; Software ; Vision, Ocular ; Visual Pathways |
| Abstract: | Background: Identification of visual field loss in people with retinal disease is not straightforward as people with eye disease are frequently unaware of substantial deficits in their visual field, as a consequence of perceptual completion (“filling-in”) of affected areas. Methodology: We attempted to induce a compelling visual illusion known as the induced twinkle after-effect (TwAE) in eight patients with retinal scotomas. Half of these patients experience filling-in of their scotomas such that they are unaware of the presence of their scotoma, and conventional campimetric techniques can not be used to identify their vision loss. The region of the TwAE was compared to microperimetry maps of the retinal lesion. Principal Findings: Six of our eight participants experienced the TwAE. This effect occurred in three of the four people who filled-in their scotoma. The boundary of the TwAE showed good agreement with the boundary of lesion, as determined by microperimetry. Conclusion: For the first time, we have determined vision loss by asking patients to report the presence of an illusory percept in blind areas, rather than the absence of a real stimulus. This illusory technique is quick, accurate and not subject to the effects of filling-in. |
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| Grant Information: | United Kingdom Wellcome Trust |
| Entry Date(s): | Date Created: 20071025 Date Completed: 20080715 Latest Revision: 20181113 |
| Update Code: | 20200716 |
| PubMed Central ID: | PMC2020442 |
| PMID: | 17957244 |
| Persistent link to this record (Permalink): | https://su.idm.oclc.org/login? |
| Cut and Paste: | Illusory” class=”redactor-linkify- |
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