动物实验 z-bo 2020-09-03 441

　　Nothing can be recognized faster than familiar faces, but scientists are trying to explain how we recognize familiar faces, or how the process is different from unfamiliar face recognition.

　　Now, a new study has begun to reveal the secret of how the brains of researchers at Rockefeller University recognize familiar faces. Winrich Freiwald of the Rockefeller University Neurology Institute and Sofia Landi, a graduate student in the laboratory, studied macaques (hereinafter referred to as experimental macaques) and found two previously unknown Regions of the brain have been found to be involved in recognition. The ability to recognize vision (visual) is the area integrated with various types of memory.

　　Titled "Facial Recognition in Two Regions of the Primate Brain". In these experiments, Landi and Freiwald used functional MRI to measure the brain activity of rhesus monkeys in response to facial photos of other monkeys. In these pictures, these faces are divided into three categories. These faces are the faces of eye monkeys (visually familiar faces) who have lived with these experimental rhesus monkeys for many years. These experiments have been observed hundreds of times in rhesus monkeys. Taken; a completely strange face. (For comparison, they used rhesus monkeys to identify familiar, visually familiar, and unfamiliar objects.) These researchers found that these experiments used rhesus monkey faces. And hope to handle neural networks. The reaction to the first two faces is exactly the same. On the contrary, the neural network showed more activity on the familiar monkey face. At the same time, the visually familiar faces actually cause certain brain areas to become inactive. In other words, the neural network can distinguish between familiar monkey faces and visually familiar monkey faces to a certain extent. Even more surprising is that the faces of monkeys who have lived with these experimental rhesus monkeys for many years promoted the activation of two previously unknown face selection areas in the brain. Yes.

　　The domain is located in the brain domain associated with so-called declarative memory. Flyworld said that another area of the brain is related to social knowledge (such as information about individuals and their social status) ---"This particular memory includes primates (including humans, of course).) It is highly appreciated. In these In the experiment, when the researchers used the rhesus monkey to show a blurred photo of the familiar monkey face, this is a known facial treatment area that gradually becomes obvious in about 30 minutes. The activity increases steadily. However, this Two newly discovered brain regions initially showed slight or no activity, but then suddenly increased-this all-or-nothing response recognizes familiar faces when you are suddenly in the "ah" moment, you will experience To this feeling. These new discoveries will enable these researchers to further study the neural mechanisms behind facial recognition and how the brain responds to different types of familiarity.