Results 1 to 10 of about 1,223 (113)

Optic Flow: A History [PDF]

open access: yesi-Perception, 2021
The concept of optic flow, a global pattern of visual motion that is both caused by and signals self-motion, is canonically ascribed to James Gibson's 1950 book “ The Perception of the Visual World.
Diederick C. Niehorster
doaj   +3 more sources

Circuit Organization Underlying Optic Flow Processing in Zebrafish

open access: yesFrontiers in Neural Circuits, 2021
Animals’ self-motion generates a drifting movement of the visual scene in the entire field of view called optic flow. Animals use the sensation of optic flow to estimate their own movements and accordingly adjust their body posture and position and ...
Koji Matsuda, Fumi Kubo, Fumi Kubo
doaj   +3 more sources

The need for speed: global optic flow speed influences steering [PDF]

open access: yesRoyal Society Open Science, 2016
How do animals follow demarcated paths? Different species are sensitive to optic flow and one control solution is to maintain the balance of flow symmetry across visual fields; however, it is unclear whether animals are sensitive to changes in ...
Georgios K. Kountouriotis   +3 more
doaj   +3 more sources

The effects of optic flow on postural stability: Influence of age and fall risk

open access: yesExperimental Gerontology, 2023
Background: Optic flow provides dynamic information relating to body position and motion with respect to visual frames of reference. This study investigated the effects of optic flow stimuli presented in four directions on postural stability in young and
Steven Phu   +6 more
doaj   +1 more source

Morphogenesis and axis specification occur in parallel during optic cup and optic fissure formation, differentially modulated by BMP and Wnt [PDF]

open access: yesOpen Biology, 2019
Optic cup morphogenesis is an intricate process. Especially, the formation of the optic fissure is not well understood. Persisting optic fissures, termed coloboma, are frequent causes for congenital blindness.
Priska Eckert   +4 more
doaj   +1 more source

On Benchmarking Optical Flow [PDF]

open access: yesComputer Vision and Image Understanding, 2001
Summary: Evaluating the performance of optical flow algorithms has been difficult because of the lack of ground truth data sets for complex scenes. We present a new method for generating motion fields from real sequences containing polyhedral objects and present a test suite for benchmarking optical flow algorithms consisting of complex synthetic ...
Brendan McCane   +3 more
openaire   +2 more sources

Virtual reality—enhanced walking in people post-stroke: effect of optic flow speed and level of immersion on the gait biomechanics

open access: yesJournal of NeuroEngineering and Rehabilitation, 2023
Background Optic flow—the apparent visual motion experienced while moving—is absent during treadmill walking. With virtual reality (VR), optic flow can be controlled to mediate alterations in human walking.
Emma De Keersmaecker   +7 more
doaj   +1 more source

Harbor seals (Phoca vitulina) can perceive optic flow under water. [PDF]

open access: yesPLoS ONE, 2014
Optic flow, the pattern of apparent motion elicited on the retina during movement, has been demonstrated to be widely used by animals living in the aerial habitat, whereas underwater optic flow has not been intensively studied so far.
Nele Gläser   +5 more
doaj   +1 more source

Functional near-infrared spectroscopy during optic flow with and without fixation. [PDF]

open access: yesPLoS ONE, 2018
Individuals with visual vertigo describe symptoms of dizziness, disorientation, and/or impaired balance in environments with conflicting visual and vestibular information or complex visual stimuli.
Carrie W Hoppes   +4 more
doaj   +1 more source

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

Home - About - Disclaimer - Privacy