Pattern recognition with the optic nerve visual prosthesis
Abstract
A volunteer with retinitis pigmentosa and no residual vision was chronically implanted with an optic nerve electrode connected to an implanted neurostimulator and antenna. An external controller with telemetry was used for electrical activation of the nerve which resulted in phosphene perception. Open-loop stimulation allowed the collection of phosphene attributes and the ability to elicit perception of simple geometrical patterns. Low perception thresholds allowed for large current intensity range within safety limits. In a closed-loop paradigm, the volunteer was using a head-worn video camera to explore a projection screen. The volunteer underwent performance evaluation during the course of a training program with 45 simple patterns. After learning, the volunteer reached a recognition score of 63% with a processing time of 60 s. Mean performance in orientation discrimination reached 100% with a processing time of 8 s.
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Different groups demonstrated that spatially organised phosphenes are induced by applying current-steering or modulating current amplitudes during optic nerve stimulation.
“Different groups demonstrated that spatially organised phosphenes are induced by applying current-steering or modulating current amplitudes during optic nerve stimulation [65,73].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [65]
Visual neuroprostheses have been implanted in the retina, optic nerve, and visual cortex of human subjects.
“To date, visual neuroprostheses have been implanted in the retina (Humayun et al. 2012; Stingl et al. 2013; Fujikado et al. 2016; Petoe et al. 2021; Barnes et al. 2016; Palanker et al. 2022; Xu et al. 2021), optic nerve (Veraart et al. 2003), and visual cortex of human subjects (Beauchamp et al. 2020; Fernández et al. 2021).”
From Sequential epiretinal stimulation improves discrimination in simple shape discrimination tasks only (2022) · cites this paper as Veraart et al. 2003
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- Authors
- Veraart, C., Wanet‐Defalque, M., Gérard, B., Vanlierde, A., & Delbeke, J.
- Affiliations
- UCLouvain (BE)
- Corresponding author
- Veraart, Claude
- ORCID
- Delbeke, Jean
- Venue
- Artificial Organs
- Publisher
- Wiley
- Published
- 2003-10-31
- Volume
- 27
- Issue
- 11
- Pages
- 996-1004
- ISSN
- 0160-564X (ISSN-L)
- 1525-1594
- OpenAlex
- W2133256163
- Cited by
- 259
- References
- 22
- Citations by year
- 2026: 5 · 2025: 4 · 2024: 8 · 2023: 6 · 2022: 4 · 2021: 5 · 2020: 7 · 2019: 4 · 2018: 7 · 2017: 5 · 2016: 17 · 2015: 13 · 2014: 14 · 2013: 20 · 2012: 20
- FWCI
- 4.04
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Artificial Organs (publishedVersion)
- PubMed (publishedVersion)
- Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)) (submittedVersion)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
- Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
- Keywords
- retinal prosthesis, pattern recognition, retinitis pigmentosa, closed-loop stimulation, orientation discrimination, neurostimulation
- MeSH terms
- Electric Stimulation, Electrodes, Implanted, Female, Humans, Middle Aged, Optic Nerve, Pattern Recognition, Visual, Phosphenes, Retinitis Pigmentosa, Task Performance and Analysis, Prostheses and Implants
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