Neurons Can Use 2 Different Strategies When Responding to Sound
[Medical News Today]
When listening to someone speak, we also rely on lip-reading and gestures to help us understand what the person is saying.
To link these sights and sounds, the brain has to know where each stimulus is located so it can coordinate processing of related visual and auditory aspects of the scene. That’s how we can single out a conversation when it’s one of many going on in a room.
While past research has shown that the brain creates a similar code for vision and hearing to integrate this information, Duke University researchers have found the opposite: neurons in a particular brain region respond differently, not similarly, based on whether the stimuli is visual or auditory.
The finding posted in the journal PLOS ONE, provides insight into how vision captures the location of perceived sound.
The idea among brain researchers has been that the neurons in a brain area known as the superior colliculus employ a “zone defense” when signaling where stimuli are located. That
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