Results 61 to 70 of about 2,016,364 (199)

Hydrodynamic propulsion of human sperm [PDF]

open access: yes, 2009
The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
ALLAN A. PACEY   +10 more
core   +1 more source

Wind Increases Blinking Behavior in Great-Tailed Grackles (Quiscalus mexicanus)

open access: yesFrontiers in Ecology and Evolution, 2019
Animals often adjust their behavior and physiology in response to extreme weather. One reason they do so is because weather can cause sensory impairments but our understanding of this topic is limited. We therefore tested whether wind, a common component
Jessica L. Yorzinski   +1 more
doaj   +1 more source

Artificial intelligent vision analysis in obstructive sleep apnoea (OSA) [PDF]

open access: yes, 2006
Although polysomnography is a generally adopted approach for diagnosing obstructive sleep apnoea (OSA), there are several critical drawbacks with it, including massive equipment cost, large expense on replacing damaged components and more importantly ...
Ahmed, Amr   +2 more
core  

Auditory compensation for head rotation is incomplete [PDF]

open access: yes, 2016
Hearing is confronted by a similar problem to vision when the observer moves. The image motion that is created remains ambiguous until the observer knows the velocity of eye and/or head.
Akeroyd, Michael A.   +3 more
core   +4 more sources

Predicate formation and verb-stranding ellipsis in Uzbek

open access: yesGlossa, 2020
This paper investigates the interaction between head movement of the verb and ellipsis of vP (verb-stranding ellipsis, VSE) in Uzbek — an understudied Turkic language of Central Asia.
Vera Gribanova
doaj   +2 more sources

3D based head movement tracking for incorporation in facial expression system [PDF]

open access: yes, 2009
Head movement tracking is a necessary system in our attempt to establish the positioning of the head in an instance of the time. In computer graphics, head positioning sequence must be done in a proper manner so that the rendering will appear realistic ...
Abdul Majid, Hariyati Shahrima   +4 more
core  

Linear Self-Motion Cues Support the Spatial Distribution and Stability of Hippocampal Place Cells [PDF]

open access: yes, 2018
The vestibular system provides a crucial component of place-cell and head-direction cell activity [1-7]. Otolith signals are necessary for head-direction signal stability and associated behavior [8, 9], and the head-direction signal's contribution to ...
Clark, Benjamin J.   +5 more
core   +1 more source

ASSOCIATED MOVEMENTS OF HEAD AND EYES. [PDF]

open access: yesJAMA: The Journal of the American Medical Association, 1902
In order that the body may properly perform its functions and all the organs act in harmony, a certain reciprocity must be maintained between the different parts. Nowhere is this reciprocity, this association of action, better observed than in the movements of the head and eyes.
openaire   +1 more source

Lightweight helmet-mounted eye movement measurement system [PDF]

open access: yes, 1978
The helmet-mounted eye movement measuring system, weighs 1,530 grams; the weight of the present aviators' helmet in standard form with the visor is 1,545 grams. The optical head is standard NAC Eye-Mark.
Barnes, J. A.
core   +1 more source

Influence of seating styles on head and pelvic vertical movement symmetry in horses ridden at trot [PDF]

open access: yes, 2018
Detailed knowledge of how a rider’s seating style and riding on a circle influences the movement symmetry of the horse’s head and pelvis may aid rider and trainer in an early recognition of low grade lameness. Such knowledge is also important during both
Haubro Andersen, P   +4 more
core   +2 more sources

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