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Computer Model Tells Why We Can't Always Believe Our Eyes by Angela Mohan on  February 26, 2021 at 12:10 PM Artificial brain enables new insights into the way our brains process moving images and explains perplexing optical illusions. By using decades' worth of data from human motion perception studies, researchers have trained an artificial neural network to estimate the speed and direction of image sequences. The new system, called MotionNet, is designed to closely match the motion-processing structures inside a human brain. This has allowed the researchers to explore fea...

>> reporter: just before 10:00 a.m., police let lars go. ken and kristi remember their younger brother that morning, overwhelmed with grief. >> he was completely hurt -- shattered, you know. he was broken. >> in those hours afterwards, what was he talking about? >> he really wasn't talking. >> he was just in shock. if he opened his mouth, he broke down. >> reporter: across town debbie's tennis friends were out on the court, waiting for her to start that early morning match. >> reporter: one of their husbands came out to tell them about debbie. >> reporter: in arkansas, jim and anne kelly learn...

That lars had shot her. >> what are you thinking when you hear that? >> it's surreal. >> i couldn't comprehend how could somebody shoot somebody? it didn't even make sense to me. >> in arkansas, jim and anne kelly learn the news from their son that's just the worst news a mother could ever hear. how does your brain process that information in. >> i don't think you do. i couldn't process the shooting part i guess, just that she was gone. and a part of me died the day she died. >> i kept saying, not debbie, not debbie, not deb. >> debbie's parents flew to san antonio, to spend time with lars, to...

It didn't even make any sense to me. >> reporter: in arkansas, jim and anne kelly learned the news from their son. >> that's just the worst news that a mother could ever hear. >> how does your brain process that information? >> i don't think you do. i couldn't process the shooting part, i guess. it was just that she was gone. and a part of me died the day she died. >> just kept saying, not debby, not debby, not deb. >> reporter: debbie's parents flew to san antonio, to spend time with lars, to support him in their shared grief. >> he could hardly talk. he seemed extremely remorseful. >> was he...

>> in those hours afterwards, what was he talking about? >> he really wasn't talking. >> he was just in shock. if he opened his mouth, he broke down. >> reporter: across town debbie's tennis friends were out on the court, waiting for her to start that early morning match. >> reporter: one of their husbands came out to tell them about debbie. >> he called me over and said that lars had shot her. >> what are you thinking when you hear that? out of the box for you. >> it was very surreal. i couldn't even comprehend how could someone shoot somebody? it didn't even make any sense to me. >> reporter...