Results 11 to 20 of about 315,719 (318)

Luminance and contrast adaptation of the inner retina [PDF]

open access: yes, 2015
Adaptation is a common feature of sensory systems, matching neural activity to the range of inputs from the environment. In the visual system this is of great importance because visual stimulus can change across 9 orders of magnitude.
Santos Caracol Teixeira, Miguel Henriques dos
core   +1 more source

Noise removal at the rod synapse of mammalian retina [PDF]

open access: yes, 1998
Mammalian rods respond to single photons with a hyperpolarization of about 1 mV which is accompanied by continuous noise. Since the mammalian rod bipolar cell collects signals from 20–100 rods, the noise from the converging rods would overwhelm the ...
M.C.W. van ROSSUM   +4 more
core   +1 more source

Outer retina analysis by optical coherence tomography in cone-rod dystrophy patients [PDF]

open access: yes, 2013
Purpose: To analyze the outer retinal layers using spectral domain optical coherence tomography (SD-OCT) in patients with cone-rod dystrophy.Methods: The diagnosis of cone-rod dystrophy was determined by primary cone involvement or concomitant loss of ...
Sallum, Juliana Maria Ferraz [UNIFESP]   +2 more
core   +1 more source

미용 안면 필러 주사 시술 후 발생한 망막하출혈을 동반한 다발성 망막동맥폐쇄의 증례 보고 [PDF]

open access: yes, 2022
Purpose: Retinal artery occlusion and ciliary artery occlusion (CAO) may occur as complications after cosmetic filler injections. However, submacular and subhyaloid hemorrhage have not been reported after cosmetic filler injection.
이승민, 김민
core   +1 more source

Retinal OCT findings in acute central retinal artery occlusion of varying severity at different disease stages – a retrospective, observational study

open access: yesInternational Journal of Retina and Vitreous, 2023
Purpose To study the optical coherence tomography (OCT) changes in eyes with acute central retinal artery occlusion (CRAO) of different severity and at different disease stages. Methods The study included acute CRAO cases of
Rubble Mangla   +7 more
doaj   +1 more source

Programmable active pixel sensor to investigate neural interactions within the retina [PDF]

open access: yes, 2009
Detection of the visual scene by the eye and the resultant neural interactions of the retina-brain system give us our perception of sight. We have developed an Active Pixel Sensor (APS) to be used as a tool for both furthering understanding of these ...
Derek Murdoch   +15 more
core   +1 more source

Trombositopeni ve Retina [PDF]

open access: yes, 2023
Trombositler kanın pıhtılaşmasında ve yara iyileşmesinde rol alırlar. Trombositopeni periferik kanda trombosit sayısının 150000/ mm3’ten az olmasına denir. Trombositopeninin en sık nedeni artmış yıkımdır. Trombositopenide oküler tutulum nadir olup en sık
Pekel, Gökhan
core   +1 more source

Functional evidence for cone-specific connectivity in the human retina [PDF]

open access: yes, 2009
NoPhysiological studies of colour vision have not yet resolved the controversial issue of how chromatic opponency is constructed at a neuronal level. Two competing theories, the cone-selective hypothesis and the random-wiring hypothesis, are currently ...
McGraw, Paul V.   +3 more
core   +1 more source

Evaluation of baseline optic disc pit and optic disc coloboma maculopathy features by spectral domain optical coherence tomography

open access: yesInternational Journal of Retina and Vitreous, 2023
Purpose The aim of this study is to describe and compare the baseline demographic, ocular, and imaging characteristics of a cohort of patients with optic disc pit (ODP) or optic disc coloboma (ODC) maculopathy.
Vishma Prabhu   +8 more
doaj   +1 more source

Dynamics of Amyloid Beta Protein Signaling under Complexity Reduction: A Mathematical Modeling and BooleSim Simulation Approach [PDF]

open access: yesEPJ Web of Conferences
Understanding how complex biological systems behave over time is essential for predicting their future states, especially when studying Alzheimer's disease.
Kociaj Inva, Çapuni Retina
doaj   +1 more source

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