نتایج جستجو برای: animal eye
تعداد نتایج: 359225 فیلتر نتایج به سال:
Turtle eye movements were measured during full-field horizontal optokinetic stimulation under closed and open loop conditions. Because these animals display unyoked slow-phase eye movement behavior, open loop stimulation could not be presented to a paralyzed eye, while monitoring the position of the contralateral eye. The turtle's optokinetic reflex loop was opened electronically by a continuou...
To ensure high acuity vision, eye movements have to be controlled with astonishing precision by the oculomotor system. Many human diseases can lead to abnormal eye movements, typically of the involuntary oscillatory eye movements type called nystagmus. Such nystagmus can be congenital (infantile) or acquired later in life. Although the resulting eye movements are well characterized, there is on...
As FK506 binding proteins (FK506BPs) are known to play an important role in the regulation of a variety of biological processes related to cell survival, this study was designed to examined the protective effects of FK506 binding protein 12 (FK506BP) on low humidity air flow induced dry eye in a rat model using transduced PEP-1-FK506BP. After the topical application of PEP-1-FK506BP, tear volum...
The eye is an organ of such remarkable complexity and apparently flawless design that it presents a challenge to both evolutionary biologists trying to explain its phylogenetic origins, and developmental biologists hoping to understand its formation during ontogeny. Since the discovery that the transcription factor Pax6 plays a crucial role in specifying the eye throughout the animal kingdom, b...
Background and purpose: Sleep and stress are linked in a bidirectional manner. Immobilization stress is a simple model that could be used easily in animal studies for understanding the neurobiology of stress-sleep relationship. Cinnamaldehyde as a herbal medicine with antioxidant activities could be investigated in modulating sleep-stress interaction. Materials and methods: In the present stud...
Digital infrared thermal imaging (DITI) using a thermal camera has potential to be a useful tool for the production animal industry. Thermography has been used in both humans and a wide range of animal species to measure body temperature as a method to detect injury or inflammation. The objective of these experiments was to compare the temperature of the eye (EYE) or muzzle (MUZ) measured using...
Farmers are at risk for work-related eye injuries, some of which can be very serious. This study describes the farm activities that were related to eye injury in a group of 36 Iowa farmers in the Agricultural Health Study who sustained 40 farmwork-related eye injuries requiring medical advice or treatment. Farm activities of grinding or cutting metal accounted for 11 (27.5%) of the eye injuries...
BACKGROUND Many visual areas of the primate brain contain signals related to the current position of the eyes in the orbit. These cortical eye-position signals are thought to underlie the transformation of retinal input-which changes with every eye movement-into a stable representation of visual space. For this coding scheme to work, such signals would need to be updated fast enough to keep up ...
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