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Mountain splendor? Scientists know where your eyes will look

December 04, 2018

New Haven, Conn. -- Using precise brain measurements, Yale researchers predicted how people's eyes move when viewing natural scenes, an advance in understanding the human visual system that can improve a host of artificial intelligence efforts, such as the development of driverless cars, said the researchers.

"We are visual beings and knowing how the brain rapidly computes where to look is fundamentally important," said Yale's Marvin Chun, Richard M. Colgate Professor of Psychology, professor of neuroscience and co-author of new research published Dec. 4 in the journal Nature Communications.

Eye movements have been extensively studied, and researchers can tell with some certainty where a gaze will be directed at different elements in the environment. What hasn't been understood is how the brain orchestrates this ability, which is so fundamental to survival.

In a previous example of "mind reading," Chun's group successfully reconstructed facial images viewed while people were scanned in an MRI machine, based on their brain imaging data alone.

In the new paper, Chun and lead author Thomas P. O'Connell took a similar approach and showed that by analyzing the brain responses to complex, natural scenes, they could predict where people would direct their attention and gaze. This was made possible by analyzing the brain data with deep convolutional neural networks -- models that are extensively used in artificial intelligence (AI).

"The work represents a perfect marriage of neuroscience and data science," Chun said.

The findings have a myriad of potential applications -- such as testing competing artificial intelligence systems that categorize images and guide driverless cars.

"People can see better than AI systems can," Chun said. "Understanding how the brain performs its complex calculations is an ultimate goal of neuroscience and benefits AI efforts."
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Yale University

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