نتایج جستجو برای: animal eye
تعداد نتایج: 359225 فیلتر نتایج به سال:
The creative and meaningful use of animal imagery plays an important role in Aravind Adiga’s novels. In his previous works, such as the 2008 Booker-prize-winning White Tiger Last Man Tower (published 2011), references frequently feature narration, thus conveying multi-layered meanings. However, become particularly noticeable Amnesty, latest novel published 2020. aim this paper is to investigate...
The cerebellum is part of the cortico-ponto-cerebellar circuit for conjugate eye movements. Recent animal data suggest an additional role of the cerebellum for the control of binocular alignment and disconjugate, i.e. vergence eye movements. The latter is separated into two different components: fast vergence (to step targets) and slow vergence (to ramp and sinusoidal targets). The aim of this ...
From human perception to primate neurophysiology, monitoring eye position is critical to the study of vision, attention, oculomotor control, and behavior. Two principal techniques for the precise measurement of eye position-the long-standing sclera-embedded search coil and more recent optical tracking techniques-are in use in various laboratories, but no published study compares the performance...
Using animal models, we have examined the effects in the eye of one of the detergents, sodium lauryl sulfate (SLS), that is included in soaps and shampoos. We also have determined how SLS is taken up by the eye. Four findings have ensued: first, SLS is rapidly taken up and accumulated by eye tissues. SLS is retained for up to five days in most eye tissues. Second, SLS uptake is greater in young...
T he brain of the higher animals, in cluding man, is a double organ, consisting of right and left hemi spheres connected by an isthmus of nerve tissue called the corpus callosum. Some 15 years ago Ronald E. Myers and R. W. Sperry, then at the University of Chicago, made a surprising discovery: When this connection between the two halves of the cerebrum was cut, each hemisphere functioned inde...
Psychophysical evidence indicates that visual motion can be sensed by low-level (energy-based) and high-level (feature-based) mechanisms. The present experiments were undertaken to determine which of these mechanisms mediates the initial ocular following response (OFR) that can be elicited at ultra-short latencies by sudden motion of large-field images. We used the methodology of Sheliga, Chen,...
Cancer of the eye in cattle with white faces occurs less frequently in cattle with pigmented eyelids. Corneoscleral pigmentation is related to eyelid pigmentation and occurrence of lesions that may precede cancer. Objectives of this study were to assess 1) variation in the proportion of eyelid and corneoscleral pigmentation in Hereford, Bos taurus, and Bos indicus crossbreds and 2) the occurren...
The eye of the fruit fly Drosophila melanogaster provides a highly tractable genetic model system for the study of animal development, and many genes that regulate Drosophila eye formation have homologs implicated in human development and disease. Among these is the homeobox gene sine oculis (so), which encodes a homeodomain transcription factor (TF) that is both necessary for eye development a...
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