نتایج جستجو برای: optic effect

تعداد نتایج: 1682311  

Journal: :Development 2013
Jörg Steinfeld Ichie Steinfeld Nicola Coronato Meggi-Lee Hampel Paul G Layer Masasuke Araki Astrid Vogel-Höpker

The retinal pigment epithelium (RPE) is indispensable for vertebrate eye development and vision. In the classical model of optic vesicle patterning, the surface ectoderm produces fibroblast growth factors (FGFs) that specify the neural retina (NR) distally, whereas TGFβ family members released from the proximal mesenchyme are involved in RPE specification. However, we previously proposed that b...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1992
M Fiorani Júnior M G Rosa R Gattass C E Rocha-Miranda

Visual receptive fields (RFs) were mapped inside and outside the cortical representation of the optic disk in the striate cortex (area V1) of anesthetized and paralyzed Cebus monkeys. Unexpectedly, most cells were found to be binocularly driven, and the RFs mapped with contralateral-eye stimulation progressed in a topographically appropriate fashion as the optic disk sector was crossed. Activat...

Abdolreza Medghalchi, Afagh Hassanzadeh Rad, Reza Soltani-Moghadam, Setila Dalili,

Inherited metabolic disorders (IMDs) are a class of genetic disorders. Each metabolic disorder may have different forms with different age of onset, clinical manifestations, severity, and even type of inheritance. Ideally, a group of different specialists, including ophthalmologists, pediatricians, biochemists, and medical geneticists are needed for the final diagnosis and management of IMDs. B...

فخر طباطبائی, سیدعلی, صابری, هوشنگ ,

To improve visual disturbance, optic nerve decompression can be performed via transcranial or tran-sphenoidal approaches. Although the surgical exposure in transcranial approach is favourable, yet the optic nerve's presence in the field may make it vulnerable to damage. Of fighty patients with different types of pituitary adenomas, 35 cases with medium-sized (1-3 cm) tumors have been studied in...

Journal: :Perception 2000
S Palmisano B J Gillam S G Blackburn

Previous vection research has tended to minimise visual-vestibular conflict by using optic-flow patterns which simulate self-motions of constant velocity. Here, experiments are reported on the effect of adding 'global-perspective jitter' to these displays--simulating forward motion of the observer on a platform oscillating in horizontal and/or vertical dimensions. Unlike non-jittering displays,...

Journal: :Optics letters 2017
Pixian Jin Huadong Lu Yixiao Wei Jing Su Kunchi Peng

We present a tunable single-frequency CW Ti:sapphire laser with intensity noise manipulation. The manipulation of the laser intensity noise is realized by varying the frequency of the modulation signal loaded on the electrodes of an intracavity electro-optic etalon. A lithium niobate (LiNbO3) crystal is used to act as the electro-optic etalon, and its electro-optic effect is utilized...

Journal: :New Journal of Physics 2021

We propose an arresting scheme for emulating the famous Faraday effect in ultracold atomic gases. Inspired by similarities between light field and bosonic atoms, we represent propagation medium transport accompany of laser-atom interaction. An artificial magneto-optic is readily signaled spin imbalance with setup laser fields offering a high controllability quantum manipulation. The present rea...

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