The hippocampus may relay predictions about what we expect to see based on past experience to the visual cortex, suggests a human neuroimaging published in JNeurosci. The study is among the first to examine the interaction between these two aspects of cognition.
Associating two different sensory experiences, such as hearing a bark with seeing a dog, allows people to perceive the world more efficiently than relying on sensory input alone. How the brain “fills in” this perceptual information, however, is unclear.
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