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Mind-reading Machine When you look at something, your eyes send a signal about that object to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons are responsible for this processing. Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, the more blood will travel to that region. And by using fMRI, scientists can visualize which parts of the brain receive more oxygen-rich blood--and therefore, which parts are working to process information. The technology shows researchers how brain activity changes when a person thinks, looks at something, or carries out an activity like speaking or reading. By highlighting the areas of the The California researchers tested brain activity by having two volunteers view hundreds of pictures of everyday objects, like people, animals, and fruits. The scientists used an fMRI machine to record the volunteers brain activity with each photograph they looked at. Different objects caused different regions of the volunteers brains to light up on the scan, indicating activity. The scientists used this information to build a model to predict how the brain might respond to any image the eyes see. 36. What is responsible for processing the information sent by your eyes? B The central part of the brain. D Oxygen-rich blood. A Cells in your brain are called neurons. C fMRI helps scientists to discover which parts of the brain process information. 38. Highlighting the areas of the brain at work means B giving light to the parts of the brain that are processing information D stopping the parts of the brain from working A Animals, objects, and fruits. C fMRI machines. 40. Which of the following can be the best replacement of the title? B Your Thoughts Can Be Scanned. D Device that can Help You Calculate | 
