which part of brain help us to identify people's faces
Answers
Studies by Gauthier have shown that an area of the brain known as the fusiform gyrus (sometimes called the fusiform face area because it is active during face recognition) is also active when study participants are asked to discriminate between different types of birds and cars, and even when participants become expert ...
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⇒⇒This was the question vexing Le Chang, a neuroscientist at the California Institute of Technology, in 2014. In prior research, his lab director had already identified neurons in the brains of primates that processed and recognized faces. These six areas in the brain’s temporal lobe, called “face patches,” contain specific neurons that appear to be much more active when a person or monkey is looking at a face than other objects.
→→In search of the method the brain uses to analyze and recognize faces, Chang decided to break down the face mathematically. He created nearly 2,000 artificial human faces and broke down their component parts by categories encompassing 50 characteristics that make faces different, from skin color to amount of space between the eyes. They he implanted electrodes into two rhesus monkeys to record how the neurons in their brain’s face patches fired when they were shown the artificial faces.
→→By then showing the monkeys thousands of faces, Chang was able to map which neurons fired in relation to which features were on each face, he reports in a study published this month in the journal Cell.
→→It turned out that each neuron in the face patches responded in certain proportions to only one feature or “dimension” of what makes faces different. This means that, as far as your neurons are concerned, a face is a sum of separate parts, as opposed to a single structure. Chang notes he was able to create faces that appeared extremely different but produced the same patterns of neural firing because they shared key features.
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