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Mizokami, Y.

Publications and source records attributed to Mizokami, Y..

2 recordsLinked to original sources

VR HMD color calibration and accurate control of emitted light using Three.js

Virtual Reality (VR) can be used to design and create new types of psychophysical experiments. Its main advantage is that it frees us from the physical limitations of real-life experiments and the hardware and software limitations of experiments running on 2D displays and computer graphics. However, color calibration of the displays is often required in vision science studies. Recent studies have shown that a standard color calibration of a Head-Mounted Display (HMD) can be very challenging and comes with significant drawbacks. In this paper, we introduce a new approach that allows for successful color calibration of an HMD and overcomes the disadvantages associated with other solutions. We utilize a new VR engine, Three.js, which offers several advantages. This paper details our setup and methodology, and provides all the elements required to reproduce the method, including the source code. We also apply our method to evaluate and compare three different HMDs: HTC Vive Pro Eye, Meta Quest Pro, and Meta Quest 3. The results show that the HTC Vive Pro Eye performs excellently, the Meta Quest Pro performs well, and the Meta Quest 3 performs poorly.

neuroscience↗

β-cyclocitric acid: a new apocarotenoid eliciting drought tolerance in plants

{beta}-Cyclocitral ({beta}-CC) is a volatile compound deriving from 1O2 oxidation of {beta}-carotene in plant leaves. {beta}-CC elicits a retrograde signaling, modulating 1O2-responsive genes and enhancing tolerance to photooxidative stress. Here, we show that {beta}-CC is largely converted into {beta}-cyclocitric acid ({beta}-CCA) in leaves and that this metabolite is a signal involved in stress tolerance. Treatment of Arabidopsis plants with {beta}-CCA markedly enhanced plant tolerance to drought by a mechanism different from known responses such as stomatal closure, changes in osmotic potential and jasmonate signaling. Furthermore, we show that the response to {beta}-CCA does not fully overlap with the {beta}-CC-dependent signaling, indicating that {beta}-CCA induces only a branch of the {beta}-CC signaling pathway. In addition, the protective effect of {beta}-CCA is a conserved mechanism, being observed in a variety of plant species. This study provides a new bioactive agent with promising agronomic applications for protecting plants against drought.

plant biology↗