Cited by 39Visual perception and processing mechanismsNeuroscience and Neural EngineeringTactile and Sensory Interactions

Eye Movement Compensation and Spatial Updating in Visual Prosthetics: Mechanisms, Limitations and Future Directions

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Paraskevoudi, Nadia, Pezaris, John S.·2019·Frontiers in Systems Neuroscience

Abstract

Despite appearing automatic and effortless, perceiving the visual world is a highly complex process that depends on intact visual and oculomotor function. Understanding the mechanisms underlying spatial updating (i.e., gaze contingency) represents an important, yet unresolved issue in the fields of visual perception and cognitive neuroscience. Many questions regarding the processes involved in updating visual information as a function of the movements of the eyes are still open for research. Beyond its importance for basic research, gaze contingency represents a challenge for visual prosthetics as well. While most artificial vision studies acknowledge its importance in providing accurate visual percepts to the blind implanted patients, the majority of the current devices do not compensate for gaze position. To-date, artificial percepts to the blind population have been provided either by intraocular light-sensing circuitry or by using external cameras. While the former commonly accounts for gaze shifts, the latter requires the use of eye-tracking or similar technology in order to deliver percepts based on gaze position. Inspired by the need to overcome the hurdle of gaze contingency in artificial vision, we aim to provide a thorough overview of the research addressing the neural underpinnings of eye compensation, as well as its relevance in visual prosthetics. The present review outlines what is currently known about the mechanisms underlying spatial updating and reviews the attempts of current visual prosthetic devices to overcome the hurdle of gaze contingency. We discuss the limitations of the current devices and highlight the need to use eye-tracking methodology in order to introduce gaze-contingent information to visual prosthetics.

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  • In prostheses with a head-mounted camera, misalignment between the camera orientation and the pupillary axes can induce localization problems.

    “Therefore, in prostheses with a head-mounted camera, misalignment between the camera orientation and the pupillary axes can induce localization problems (Caspi et al., 2018; Paraskevoudi and Pezaris, 2018; Sabbah et al., 2014; Schmidt et al., 1996).”

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Research works printed but not linked: 2

  1. Barry, 2016, Hand-camera coordination varies over time in users of the Argus®II retinal prosthesis system., Front. Syst. Neurosci., 10, 10.3389/fnsys.2016.00041 · DOI
  2. Zhou, 2013, The Argus II retinal prosthesis system: An overview

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Authors
Paraskevoudi, N., & Pezaris, J. S.
Affiliations
  • Universitat de Barcelona (ES)
  • Harvard University (US)
Corresponding author
Pezaris, John S.
Venue
Frontiers in Systems Neuroscience
Published
2019-02-01
Volume
12
Pages
73-73
ISSN
1662-5137 (ISSN-L)
OpenAlex
W2911454160
Cited by
39
References
173
Citations by year
2026: 4 · 2025: 5 · 2024: 7 · 2023: 5 · 2022: 3 · 2021: 7 · 2020: 5 · 2019: 3
FWCI
0.57
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Systems Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Fulbright Foundation in Greece
  • William M. Wood Foundation
  • National and Kapodistrian University of Athens
  • National Eye Institute (R01EY027888)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
Keywords
eye movement compensation, spatial updating, visual prosthetics, artificial vision, eye tracking, blind patients, oculomotor function, visual perception

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