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LONDON. A study published today in the scientific journal Nature found that the posterior parietal cortex (PPC) is the key to the transformation that leads a person to act after seeing something.
The active response to visual perception is simple and essential in everyday life but, until now, neuroscientists have failed to find out where the link is and how it is created.
This study, prepared by the Massachusetts Institute of Technology's Picower Learning and Memory Institute (MIT, USA), identified the exact role that PPC had in mice and demonstrated that it contains a combination of neurons adapted to visual processing, decision-making and
"Vision for action begins with the eyes, but this information must be turned into motor commands," says one of the leaders of the Mriganka Sur experience.
To conduct the survey, the team trained mice to respond with or without movement to different visual stimuli, so that they could compare the performance of neurons to the visual model with or without the potential From motor action
While mice observed visual patterns and made the decision to move or not, researchers recorded the activity of hundreds of neurons in two brain regions. First, the visual cortex, which treats the view, then the CSF, which receives information from the visual cortex but also the entrance of many other sensory and motor regions
Thus, they discovered that the CSF neurons responded selectively. only to see something, but to the rules of the task and the ability to act on the correct visual cue. "Many neurons in the CPAP appeared to be active only during particular combinations of visual input and motor action," said coauthor Michael Goard. "This suggests that instead of playing a specific role in sensory or motor processing, they can flexibly link sensory and motor information to help the mouse react appropriately to its environment," he said. he added.
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