scholarly journals Temporal information loss in the macaque early visual system

PLoS Biology ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. e3000570 ◽  
Author(s):  
Gregory D. Horwitz
Keyword(s):  
Visual System ◽  
Information Loss ◽  
Temporal Information ◽  
Early Visual System

scholarly journals A silicon early visual system as a model animal

2004 ◽  
Vol 44 (17) ◽  
pp. 2083-2089 ◽  
Author(s):  
Tobi Delbrück ◽  
Shih-Chii Liu
Keyword(s):  
Visual System ◽  
Model Animal ◽  
Early Visual System

Population coding of motion patterns in the early visual system

2001 ◽  
Vol 187 (7) ◽  
pp. 549-558 ◽  
Author(s):  
Stefan Wilke ◽  
Andreas Thiel ◽  
Christian Eurich ◽  
Martin Greschner ◽  
Markus Bongard ◽  
...  
Keyword(s):  
Visual System ◽  
Population Coding ◽  
Motion Patterns ◽  
Early Visual System

Efficient coding matters in the organization of the early visual system

2018 ◽  
Vol 105 ◽  
pp. 218-226 ◽  
Author(s):  
Qingqun Kong ◽  
Jiuqi Han ◽  
Yi Zeng ◽  
Bo Xu
Keyword(s):  
Visual System ◽  
Efficient Coding ◽  
Early Visual System

Processing of Natural Time Series of Intensities in the Early Visual System of the Blowfly

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 24-24 ◽  
Author(s):  
J H van Hateren
Keyword(s):  
Time Series ◽  
Visual System ◽  
Visual Processing ◽  
Time Course ◽  
Temporal Frequency ◽  
Power Spectra ◽  
Calliphora Vicina ◽  
Intensity Measurements ◽  
Natural Time ◽  
Early Visual System

The first steps of processing in the visual system of the blowfly are well suited for studying the relationship between the properties of the environment and the function of visual processing (eg Srinivasan et al, 1982 Proceedings of the Royal Society, London B216 427; van Hateren, 1992 Journal of Comparative Physiology A171 157). Although the early visual system appears to be linear to some extent, there are also reports on functionally significant nonlinearities (Laughlin, 1981 Zeitschrift für Naturforschung36c 910). Recent theories using information theory for understanding the early visual system perform reasonably well, but not quite as well as the real visual system when confronted with natural stimuli [eg van Hateren, 1992 Nature (London)360 68]. The main problem seems to be that they lack a component that adapts with the right time course to changes in stimulus statistics (eg the local average light intensity). In order to study this problem of adaptation with a relatively simple, yet realistic, stimulus I recorded time series of natural intensities, and played them back via a high-brightness LED to the visual system of the blowfly ( Calliphora vicina). The power spectra of the intensity measurements and photoreceptor responses behave approximately as 1/ f, with f the temporal frequency, whilst those of second-order neurons (LMCs) are almost flat. The probability distributions of the responses of LMCs are almost gaussian and largely independent of the input contrast, unlike the distributions of photoreceptor responses and intensity measurements. These results suggest that LMCs are in effect executing a form of contrast normalisation in the time domain.

Study of the contrast processing in the early visual system using a neuromorphic retinal architecture

2009 ◽  
Vol 72 (4-6) ◽  
pp. 928-935 ◽  
Author(s):  
J. Javier Martínez ◽  
F. Javier Toledo ◽  
Eduardo Fernández ◽  
José M. Ferrández
Keyword(s):  
Visual System ◽  
Early Visual System

scholarly journals Contributions of the early visual system to high-level visual distinctions

2021 ◽  
Vol 21 (9) ◽  
pp. 2412
Author(s):  
Lily E. Kramer ◽  
Talia Konkle ◽  
Marlene R. Cohen
Keyword(s):  
Visual System ◽  
Early Visual System ◽  
High Level
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