Results 21 to 30 of about 91,702 (253)

Optical coherence tomography angiography of optic disc perfusion in non-arteritic anterior ischemic optic neuropathy [PDF]

open access: yesInternational Journal of Ophthalmology, 2017
AIM: To compare the optic disc blood flow of non-arteritic ischemic optic neuropathy (NAION) eyes with normal eyes. METHODS: The optic disc blood flow densities of diagnosed non-acute phase NAION eyes (21 eyes, 14 individuals) and normal eyes (19 eyes ...
Jia-Wen Ling   +4 more
doaj   +1 more source

Larger Head Displacement to Optic Flow Presented in the Lower Visual Field

open access: yesi-Perception, 2019
Optic flow that simulates self-motion often produces postural adjustment. Although literature has suggested that human postural control depends largely on visual inputs from the lower field in the environment, effects of the vertical location of optic ...
Kanon Fujimoto, Hiroshi Ashida
doaj   +1 more source

Different Head-Sway Responses to Optic Flow in Sitting and Standing With a Head-Mounted Display

open access: yesFrontiers in Psychology, 2020
We investigated postural responses (head displacements) and self-motion perception (vection) to radial and lateral optic flows while sitting and standing by using a head-mounted display.
Kanon Fujimoto   +2 more
doaj   +1 more source

Gaze strategy in the free flying zebra finch (Taeniopygia guttata). [PDF]

open access: yesPLoS ONE, 2008
Fast moving animals depend on cues derived from the optic flow on their retina. Optic flow from translational locomotion includes information about the three-dimensional composition of the environment, while optic flow experienced during a rotational ...
Dennis Eckmeier   +6 more
doaj   +1 more source

On Refractive Optical Flow [PDF]

open access: yes, 2004
This paper presents a novel generalization of the optical flow equation to the case of refraction, and it describes a method for recovering the refractive structure of an object from a video sequence acquired as the background behind the refracting object moves.
Sameer Agarwal 0001   +3 more
openaire   +1 more source

Processing of Visual Signals Related to Self-motion in the Cerebellum of Pigeons

open access: yesFrontiers in Behavioral Neuroscience, 2013
In this paper I describe the key features of optic flow processing in pigeons. Optic flow is the visual motion that occurs across the entire retina as a result of self-motion and is processed by subcortical visual pathways that project to the cerebellum.
Douglas Richard Wylie
doaj   +1 more source

ARTFLOW: A Fast, Biologically Inspired Neural Network that Learns Optic Flow Templates for Self-Motion Estimation

open access: yesSensors, 2021
Most algorithms for steering, obstacle avoidance, and moving object detection rely on accurate self-motion estimation, a problem animals solve in real time as they navigate through diverse environments.
Oliver W. Layton
doaj   +1 more source

Monocular blur impairs heading judgements from optic flow. [PDF]

open access: yesIperception
Monocular blur sometimes impairs locomotion; however, it is not always clear when this will happen. Optic flow (the apparent motion of scene texture elements that occurs during self-motion) provides powerful signals about the direction of travel.
Sheppard WEA   +3 more
europepmc   +2 more sources

Species-specific flight styles of flies are reflected in the response dynamics of a homologue motion sensitive neuron

open access: yesFrontiers in Integrative Neuroscience, 2012
Hoverflies and blowflies have distinctly different flight styles. Yet, both species have been shown to structure their flight behaviour in a way that facilitates extraction of 3D information from the image flow on the retina (optic flow).
Bart eGeurten   +4 more
doaj   +1 more source

Children's Brain Responses to Optic Flow Vary by Pattern Type and Motion Speed. [PDF]

open access: yesPLoS ONE, 2016
Structured patterns of global visual motion called optic flow provide crucial information about an observer's speed and direction of self-motion and about the geometry of the environment.
Rick O Gilmore   +2 more
doaj   +1 more source

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