The brains of people who regularly play computer games differ from those of infrequent gamers, research suggests.
Brain scans showed a larger ventral striatum, which is the hub of the brain's reward system, in regular gamers.
Students preparing for final exams might want to wait before pulling an all-night cram session -- at least as far as their neurons are concerned. Carnegie Mellon University neuroscientists have discovered a new intermediate phase in neuronal development during which repeated exposure to a stimulus shrinks synapses.
"When you think of learning, you think that it's cumulative. We thought that synapses started small and then got bigger and bigger. This isn't the case," said Barth, who also is a member of the joint Carnegie Mellon/University of Pittsburgh Center for the Neural Basis of Cognition. "Based on our data, it seems like synapses that have recently been strengthened are peculiarly vulnerable -- more stimulation can actually wipe out the effects of learning
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