ถ้ามนุษย์ไม่มีตาขาว เราอาจสูญพันธุ์ไปนานแล้ว!

Why do humans have a "sclera" (white area around the iris) that lets others know what we're looking at? The sclera is scientifically called the "sclera." Humans have a relatively uniform white area around the iris and a long horizontal slit, allowing for clearer vision of pupil movement than in many other animals. Related Research: • Kobayashi and Kohshima (2001) Studied the eye shape of primates and found that humans have a large visible sclera and a long horizontal slit, making it easier to observe visual direction. • Tomasello et al. (2007) Compared human infants to great apes and found that human infants paid more attention to eye direction, while great apes tended to look at head direction. This experiment supports the "Cooperative Eye Hypothesis." • Kano et al. (2022) found that the white area around the iris helps both humans and chimpanzees distinguish visual direction more easily. Especially when the image is small, the light is low, or visibility is poor. • Clark et al. (2023) Surveyed 230 wild chimpanzees and found that approximately 15% had sclera (white part of the eye), and another 41% had a light-colored area around the iris or a white patch, indicating that sclera is not unique to humans. Scientists therefore do not yet have a definitive answer as to whether human sclera develops due to cooperation, communication, reduced aggression, or environmental factors. However, what is quite clear is that sclera helps to change the direction of gaze into signals that others can read. #Sclera #HumanEye #HumanEvolution #HumanBehavior #EducationalDocumentary Learn how to use body language to communicate feelings without words. Understand the hidden meanings in eye contact communication in real-life situations. This video summarizes the importance of using eyesight in daily life, whether observing nature, competing, or interacting with people around you. We will explore how the eyes function as the windows to the soul and why understanding the psychology of eye contact is a skill that helps you read people's minds more accurately. The content in this video is designed for those who want to improve their social and interpersonal communication skills. You will see clear examples of how human evolution has shaped our expressions through eye contact. Practice observing the meaning of eye contact. This will help you better assess situations and respond appropriately in all forms of communication. Follow us to receive more weekly insights into developing communication skills and body language, and let us know in the comments which situations you felt made using eye contact the most powerful communication.