Reading with a simulated 60-channel implant

Frontiers in Neuroscience

Volumn , Issue MAY, 2011, Pages

  Fornos, Angélica Pérez ^a   Sommerhalder, Jörg ^a   Pelizzone, Marco ^a  

^a GENEVA UNIVERSITY HOSPITALS   (Switzerland)

Author keywords

Field of view; Neuroscience; Psychophysics; Reading; Resolution; Retinal prostheses; Simulation of artificial vision; Spatial vision

Indexed keywords

60 CHANNEL RETINAL IMPLANT; ACCURACY; ADULT; ARTICLE; FEMALE; HUMAN; HUMAN EXPERIMENT; IMAGE ANALYSIS; IMPLANT; MALE; NORMAL HUMAN; READING; RETINA; SIMULATION; TASK PERFORMANCE; VISUAL FIELD; VISUAL SYSTEM PARAMETERS;

EID: 84855677027     PISSN: 16624548     EISSN: 1662453X     Source Type: Journal    
DOI: 10.3389/fnins.2011.00057     Document Type: Article

References (36)

1. Beckmann, P., and Legge, G. (1996). Psychophysics of reading-XIV. The page navigation problem in using magnifiers. Vision Res. 36, 3723-3733.
2. Chader, G., Weiland, J., and Humayun, M. (2009). Artificial vision: needs, functioning, and testing of a retinal electronic prosthesis. Prog. Brain Res. 175, 317-332.
3. Cornelissen, F., and Van den Dobbelsteen, J. (1999). Heading detection with simulated visual field defects. Vis. Impair. Res. 1, 71-84.
4. da Cruz, L., Coley, B., Christopher, P., Merlini, F., Wuyyuru, V., Sahel, J. A., Stanga, P., Filley, E., Dagnelie, G., and Argus II Study Group. (2010). Patients blinded by outer retinal dystrophies are able to identify letters using the ArgusTM II retinal prosthesis system. Invest. Ophthalmol. Vis. Sci. 51, 2023. [ARVO e-abstract].
5. Dagnelie, G., Barnett, D., Humayun, M. S., and Thompson, R. W. (2006). Paragraph text reading using a pixelized prosthetic vision simulator: parameter dependence and task learning in free-viewing conditions. Invest. Ophthalmol. Vis. Sci. 47, 1241-1250.
6. de Balthasar, C., Patel, S., Roy, A., Freda, R., Greenwald, S., Horsager, A., Mahadevappa, M., Yanai, D., McMahon, M. J., Humayun, M. S., Greenberg, R. J., Weiland, J. D., and Fine, I. (2008). Factors affecting perceptual thresholds in epiretinal prostheses. Invest. Ophthalmol. Vis. Sci. 49, 2303-2314.
7. Degenaar, P., Grossman, N. Memon, M. A., Burrone, J., Dawson, M., Drakakis, E., Neil, M., and Nikolic, K. (2009). Optobionic vision-a new genetically enhanced light on retinal prosthesis. J. Neural Eng. 6, 35007.
8. Fine, E., Kirschen, M., and Peli, E. (1996). The necessary field of view to read with an optimal stand magnifier. J. Am. Optom. Assoc. 67, 382-389.
9. Friesen, L. M., Shannon, R. V., Baskent, D., and Wang, X. (2001). Speech recognition in noise as a function of the number of spectral channels: comparison of acoustic hearing and cochlear implants. J. Acoust. Soc. Am. 110, 1150-1163.
10. Greenwald, S. H., Horsager, A., Humayun, M. S., Greenberg, R. J., McMahon, M. J., and Fine, I. (2009). Brightness as a function of current amplitude in human retinal electrical stimulation. Invest. Ophthalmol. Vis. Sci. 50, 5017-5025.
11. Hazel, C. A., Petre, K. L., Armstrong, R. A., Benson, M. T., and Frost, N. A. (2000). Visual function and subjective quality of life compared in subjects with acquired macular disease. Invest. Ophthalmol. Vis. Sci. 41, 1309-1315.
12. Horsager, A., Greenberg, R., and Fine, I. (2010). Spatiotemporal interactions in retinal prosthesis subjects. Invest. Ophthalmol. Vis. Sci. 51, 1223-1233.
13. Horsager, A., Greenwald, S. H., Weiland, J. D., Humayun, M. S., Greenberg, R. J., McMahon, M. J., Boynton, G. M., and Fine, I. (2009). Predicting visual sensitivity in retinal prosthesis patients. Invest. Ophthalmol. Vis. Sci. 50, 1483-1491.
14. Humayun, M. S., da Cruz, L., Dagnelie, G., Mohand-Said, S., Stanga, P., Agrawal, R. N., Greenberg, R. J., and Argus II Study Group. (2010). Interim performance results from the second sight(R) ArgusTM II retinal prosthesis study. Invest. Ophthalmol. Vis. Sci. 51, 2022. [ARVO e-abstract].
15. Jensen, R., and Rizzo, J. (2007). Responses of ganglion cells to repetitive electrical stimulation of the retina. J. Neural Eng. 4, S1-S6.
16. Jensen, R., and Rizzo, J. (2008). Activation of retinal ganglion cells in wild-type and rd1 mice through electrical stimulation of the retinal neural network. Vision Res. 48, 1562-1568.
17. Knowlton, M., and Wetzel, R. (1996). Braille reading rates as a function of reading tasks. J. Vis. Impair. Blind 90, 227-236.
18. Legge, G. E., Pelli, D. G., Rubin, G. S., and Schleske, M. M. (1985). Psychophysics of reading-I. Normal vision. Vision Res. 25, 239-252.
19. Lorimer, P. (1996). A Critical Evaluation of the Historical Development of the Tactile Modes of Reading and an Analysis and Evaluation of Researches Carried Out in Endeavours to Make the Braille Code Easier to Read and to Write. Ph.D. thesis, University of Birmingham, Birmingham. Available at: http://www.braille.org/papers/lorimer/title.html
20. McClure, M. E., Hart, P. M., Jackson, A. J., Stevenson, M. R., and Chakravarthy, U. (2000). Macular degeneration: do conventional measurements of impaired visual function equate with visual disability? Br. J. Ophthalmol. 84, 244-250.
21. Merabet, L. B., Rizzo, J. F., Amedi, A., Somers, D. C., and Pascual-Leone, A. (2005). What blindness can tell us about seeing again: merging neuroplasticity and neuroprostheses. Nat. Rev. Neurosci. 6, 71-77.
22. Mousty, P., and Bertelson, P. (1985). A study of braille reading: 1. Reading speed as a function of hand usage and context. Q. J. Exp. Psychol. 37, 217-233.
23. Pelizzone, M., Pérez Fornos, A., Chanderli, K., Safran, A. B., Renaud, P., Bertrand, D., Salzmann, J., Picaud, S., and Sommerhalder, J. (2006). Minimum requirements for useful artificial vision: synthesis of six years of research. Invest. Ophthalmol. Vis. Sci. 47, 1539. [ARVO e-abstract].
24. Pelli, D. G. (1987). "The visual requirements of mobility," in Low Vision: Principles and Applications, ed. G. C. Woo (New York: Springer Verlag), 134-146.
25. Perez Fornos, A. (2006). Minimum Requirements for a Retinal Prosthesis to Restore Useful Vision. Ph.D. (Neuroscience) thesis No. 3737, Université de Genève, Geneva. Available at: http://archive-ouverte.unige.ch/unige:582
26. Perez Fornos, A., Sommerhalder, J., Pittard, A., Safran, A. B., and Pelizzone, M. (2008). Simulation of artificial vision: IV. Visual information required to achieve simple pointing and manipulation tasks. Vision Res. 48, 1705-1718.
27. Perez Fornos, A., Sommerhalder, J., Rappaz, B., Safran, A. B., and Pelizzone, M. (2005). Simulation of artificial vision, III: do the spatial or temporal characteristics of stimulus pixelization really matter? Invest. Ophthalmol. Vis. Sci. 46, 3906-3912.
28. Richard, G., Hornig, R., Keseru, M., and Feucht, M. (2007). Chronic epiretinal chip implant in blind patients with retinitis pigmentosa: long-term clinical results. Invest. Ophthalmol. Vis. Sci. 48, 666. [ARVO e-abstract].
29. Sommerhalder, J., Oueghlani, E., Bagnoud, M., Leonards, U., Safran, A. B., and Pelizzone, M. (2003). Simulation of artificial vision: I. Eccentric reading of isolated words, and perceptual learning. Vision Res. 43, 269-283.
30. Sommerhalder, J., Rappaz, B., de Haller, R., Perez Fornos, A., Safran, A. B., and Pelizzone, M. (2004). Simulation of artificial vision: II. Eccentric reading of full-page text and the learning of this task. Vision Res. 44, 1693-1706.
31. Sommerhalder, J. R, Pérez Fornos, A., Safran, A. B., and Pelizzone, M. (2008). Reading with a simulated 60-channel retinal implant. Invest. Ophthalmol. Vis. Sci. 49, 3012. [ARVO e-abstract].
32. Stanga, P., Coley, B., Merlini, F., Biswas, S., Turner, G., and Greenberg, R. (2010). Initial word recognition results with the ArgusTM II retinal prosthesis. Invest. Ophthalmol. Vis. Sci. 51, 426. [ARVO e-abstract].
33. Studebaker, G. A. (1985). A "rationalized" arcsine transform. J. Speech Hear. Res. 28, 455-462.
34. Tsai, D., Morley, J. W., Suaning, G. W., and Lovell, N. H. (2009). Direct activation and temporal response properties of rabbit retinal ganglion cells following subretinal stimulation. J. Neurophysiol. 102, 2982-2993.
35. Wolffsohn, J., and Cochrane, A. (1998). Low vision perspectives on glaucoma. Clin. Exp. Optom. 81, 280-289.
36. Zrenner, E. (2002). Will retinal implants restore vision? Science 295, 1022-1025.