Results 21 to 30 of about 86,920 (253)

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

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

Sensor-Guided Optical Flow [PDF]

open access: yes2021 IEEE/CVF International Conference on Computer Vision (ICCV), 2021
This paper proposes a framework to guide an optical flow network with external cues to achieve superior accuracy either on known or unseen domains. Given the availability of sparse yet accurate optical flow hints from an external source, these are injected to modulate the correlation scores computed by a state-of-the-art optical flow network and guide ...
M. Poggi, F. Aleotti, S. Mattoccia
openaire   +3 more sources

Comparing measurements of head motion and centre of pressure for body sway induced by optic flow on a head-mounted display

open access: yesFrontiers in Virtual Reality, 2022
We compared two measures of visually induced body sway—head motion and centre of pressure (CoP)—that were simultaneously measured while observing optic flow on a head-mounted display (HMD).
Hiroshi Ashida, Kanon Fujimoto
doaj   +1 more source

Encoding of naturalistic optic flow by motion sensitive neurons of nucleus rotundus in the zebra finch (Taeniopygia guttata).

open access: yesFrontiers in Integrative Neuroscience, 2013
The retinal image changes that occur during locomotion, the optic flow, carry information about self-motion and the three-dimensional structure of the environment.
Dennis eEckmeier   +5 more
doaj   +1 more source

Functional correlates of optic flow motion processing in Parkinson’s disease

open access: yesFrontiers in Integrative Neuroscience, 2014
The visual input created by the relative motion between an individual and the environment, also called optic flow, influences the sense of self-motion, postural orientation, veering of gait, and visuospatial cognition.
Deepti ePutcha   +12 more
doaj   +1 more source

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