IEICE TRANSACTIONS on Information
Effect of Fixational Eye Movement on Signal Processing of Retinal Photoreceptor: A Computational Study
Summary :
The eyes are continuously fluctuating during fixation. These fluctuations are called fixational eye movements. Fixational eye movements consist of tremors, microsaccades, and ocular drifts. Fixational eye movements aid our vision by shaping spatial-temporal characteristics. Here, it is known that photoreceptors, the first input layer of the retinal network, have a spatially non-uniform cell alignment called the cone mosaic. The roles of fixational eye movements are being gradually uncovered; however, the effects of the cone mosaic are not considered. Here we constructed a large-scale visual system model to explore the effect of the cone mosaic on the visual signal processing associated with fixational eye movements. The visual system model consisted of a brainstem, eye optics, and photoreceptors. In the simulation, we focused on the roles of fixational eye movements on signal processing with sparse sampling by photoreceptors given their spatially non-uniform mosaic. To analyze quantitatively the effect of fixational eye movements, the capacity of information processing in the simulated photoreceptor responses was evaluated by information rate. We confirmed that the information rate by sparse sampling due to the cone mosaic was increased with fixational eye movements. We also confirmed that the increase of the information rate was derived from the increase of the responses for the edges of objects. These results suggest that visual information is already enhanced at the level of the photoreceptors by fixational eye movements.
- Publication
- IEICE TRANSACTIONS on Information Vol.E103-D No.7 pp.1753-1759
- Publication Date
- 2020/07/01
- Publicized
- 2020/04/01
- Online ISSN
- 1745-1361
- DOI
- 10.1587/transinf.2019EDP7225
- Type of Manuscript
- PAPER
- Category
- Biological Engineering
Authors
Keiichiro INAGAKI
Chubu University,RIKEN Brain science institute
Takayuki KANNON
RIKEN Brain science institute,Kanazawa University
Yoshimi KAMIYAMA
Aichi Prefectural University
Shiro USUI
RIKEN Brain science institute
Keyword
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Keiichiro INAGAKI, Takayuki KANNON, Yoshimi KAMIYAMA, Shiro USUI, "Effect of Fixational Eye Movement on Signal Processing of Retinal Photoreceptor: A Computational Study" in IEICE TRANSACTIONS on Information,
vol. E103-D, no. 7, pp. 1753-1759, July 2020, doi: 10.1587/transinf.2019EDP7225.
Abstract: The eyes are continuously fluctuating during fixation. These fluctuations are called fixational eye movements. Fixational eye movements consist of tremors, microsaccades, and ocular drifts. Fixational eye movements aid our vision by shaping spatial-temporal characteristics. Here, it is known that photoreceptors, the first input layer of the retinal network, have a spatially non-uniform cell alignment called the cone mosaic. The roles of fixational eye movements are being gradually uncovered; however, the effects of the cone mosaic are not considered. Here we constructed a large-scale visual system model to explore the effect of the cone mosaic on the visual signal processing associated with fixational eye movements. The visual system model consisted of a brainstem, eye optics, and photoreceptors. In the simulation, we focused on the roles of fixational eye movements on signal processing with sparse sampling by photoreceptors given their spatially non-uniform mosaic. To analyze quantitatively the effect of fixational eye movements, the capacity of information processing in the simulated photoreceptor responses was evaluated by information rate. We confirmed that the information rate by sparse sampling due to the cone mosaic was increased with fixational eye movements. We also confirmed that the increase of the information rate was derived from the increase of the responses for the edges of objects. These results suggest that visual information is already enhanced at the level of the photoreceptors by fixational eye movements.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2019EDP7225/_p
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@ARTICLE{e103-d_7_1753,
author={Keiichiro INAGAKI, Takayuki KANNON, Yoshimi KAMIYAMA, Shiro USUI, },
journal={IEICE TRANSACTIONS on Information},
title={Effect of Fixational Eye Movement on Signal Processing of Retinal Photoreceptor: A Computational Study},
year={2020},
volume={E103-D},
number={7},
pages={1753-1759},
abstract={The eyes are continuously fluctuating during fixation. These fluctuations are called fixational eye movements. Fixational eye movements consist of tremors, microsaccades, and ocular drifts. Fixational eye movements aid our vision by shaping spatial-temporal characteristics. Here, it is known that photoreceptors, the first input layer of the retinal network, have a spatially non-uniform cell alignment called the cone mosaic. The roles of fixational eye movements are being gradually uncovered; however, the effects of the cone mosaic are not considered. Here we constructed a large-scale visual system model to explore the effect of the cone mosaic on the visual signal processing associated with fixational eye movements. The visual system model consisted of a brainstem, eye optics, and photoreceptors. In the simulation, we focused on the roles of fixational eye movements on signal processing with sparse sampling by photoreceptors given their spatially non-uniform mosaic. To analyze quantitatively the effect of fixational eye movements, the capacity of information processing in the simulated photoreceptor responses was evaluated by information rate. We confirmed that the information rate by sparse sampling due to the cone mosaic was increased with fixational eye movements. We also confirmed that the increase of the information rate was derived from the increase of the responses for the edges of objects. These results suggest that visual information is already enhanced at the level of the photoreceptors by fixational eye movements.},
keywords={},
doi={10.1587/transinf.2019EDP7225},
ISSN={1745-1361},
month={July},}
Copy
TY - JOUR
TI - Effect of Fixational Eye Movement on Signal Processing of Retinal Photoreceptor: A Computational Study
T2 - IEICE TRANSACTIONS on Information
SP - 1753
EP - 1759
AU - Keiichiro INAGAKI
AU - Takayuki KANNON
AU - Yoshimi KAMIYAMA
AU - Shiro USUI
PY - 2020
DO - 10.1587/transinf.2019EDP7225
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E103-D
IS - 7
JA - IEICE TRANSACTIONS on Information
Y1 - July 2020
AB - The eyes are continuously fluctuating during fixation. These fluctuations are called fixational eye movements. Fixational eye movements consist of tremors, microsaccades, and ocular drifts. Fixational eye movements aid our vision by shaping spatial-temporal characteristics. Here, it is known that photoreceptors, the first input layer of the retinal network, have a spatially non-uniform cell alignment called the cone mosaic. The roles of fixational eye movements are being gradually uncovered; however, the effects of the cone mosaic are not considered. Here we constructed a large-scale visual system model to explore the effect of the cone mosaic on the visual signal processing associated with fixational eye movements. The visual system model consisted of a brainstem, eye optics, and photoreceptors. In the simulation, we focused on the roles of fixational eye movements on signal processing with sparse sampling by photoreceptors given their spatially non-uniform mosaic. To analyze quantitatively the effect of fixational eye movements, the capacity of information processing in the simulated photoreceptor responses was evaluated by information rate. We confirmed that the information rate by sparse sampling due to the cone mosaic was increased with fixational eye movements. We also confirmed that the increase of the information rate was derived from the increase of the responses for the edges of objects. These results suggest that visual information is already enhanced at the level of the photoreceptors by fixational eye movements.
ER -
English
