Ávila Francisco J
Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain.
J Imaging. 2024 Jul 10;10(7):163. doi: 10.3390/jimaging10070163.
Arduino microcontrollers are used for a wide range of technological and biomedical applications, such as image classification, computer vision, brain-computer interaction and vision experiments. Here, we present a new cost-effective mini-device based on RGB LED flicker stimulation for the assessment of the chromatic temporal resolution of the visual function based on the concept of critical flicker fusion frequency (CFF). The assembly of the device and its testing in thirty young subjects demonstrate the steady white visual perception of a trichromatic flicker stimulus (mixture of red, green and blue stimuli) beyond the CFF. Macular function as measured by photo-stress recovery time (PRT) was found to be independent of the CFF measurements for red, green and blue lights. However, a statistical correlation was found between the contrast modulation for CFF for red and green stimuli and PRT. Finally, wavefront measurements demonstrate that high-order aberrations improve the temporal resolution of the visual function.
Arduino微控制器被广泛应用于各种技术和生物医学领域，如图像分类、计算机视觉、脑机交互和视觉实验。在此，我们基于临界闪烁融合频率（CFF）的概念，提出了一种基于RGB LED闪烁刺激的新型经济高效的小型设备，用于评估视觉功能的色度时间分辨率。该设备的组装及其在30名年轻受试者中的测试表明，在CFF以上，三原色闪烁刺激（红色、绿色和蓝色刺激的混合）具有稳定的白色视觉感知。通过光应激恢复时间（PRT）测量的黄斑功能被发现与红、绿、蓝光的CFF测量无关。然而，在红色和绿色刺激的CFF对比度调制与PRT之间发现了统计相关性。最后，波前测量表明高阶像差可提高视觉功能的时间分辨率。
