Neural Networks Learn by Recycling

Brains Cling to Old Habits When Learning New Tricks Using a brain-computer interface, scientists are beginning to learn why learning is hard. The brain’s adaptability can sometimes seem endless. But observations of the brain during learning suggest that its networks of neurons can be surprisingly inflexible and inefficient. The hallmark of intelligence is the ability to learn. As decades of research have shown, our brains exhibit a high degree of “plasticity,” meaning that neurons can rewire their connections in response to new stimuli. But researchers at Carnegie Mellon University and the University of Pittsburgh have… Read moreNeural Networks Learn by Recycling