To learn how color vision works, researchers sent a laser pulse to individual cone cells in the eyes of two men. Colored dots indicate the color of light-detecting pigment in each cone cell. A crosshair shows where a laser flash will appear. After cells were stimulated with the laser, the men indicated what color they perceived. Many red or green cone cells send a white signal instead of a color signal to the brain, the researchers found. Cells surrounded by cones of a different color were more

Are you experiencing peeling skin, dry eyes, grey hair, numb toes, pale tongue, or brain fog? These could be hidden signs that your body is lacking essential vitamins and minerals. In this video, I will explain the nutrient deficiencies behind these symptoms and why they happen. 👉 1. Peeling skin on fingers – Zinc deficiency Zinc is vital for skin repair, wound healing, and immunity. Without enough zinc, your skin can become dry, peel, and heal slowly. 👉 2. Dry eyes – Vitamin A deficiency Vita

258K views · 517 reactions |  Curious about your color perception? Take our quiz to see if you might have colorblindness!  | QuizGriz | Facebook