fMRI study reveals the brain working while browsing ;
(Medical Xpress) -A team of researchers affiliated with various academic institutions in the US He has learned more about how the brain works as a person displays both a trip, and then as the trip is taken. In his article in Science magazine, the team describes their studies using volunteers, virtual reality technology and fMRI machines.
Scientists have long known that the hippocampus is heavily involved in directing us where we want to go (Previous research has shown that grid cells are used to create a virtual map in the entorhinal, which interacts with the hippocampus), either walking or license our brain maintain that the virtual map of the world around us, and we used to get where we want to go. In this new effort, researchers have found other brain parties that are also involved in the process during different parts of a trip.
For a better understanding of what happens in the brain when people make their way from one place to another, the researchers asked volunteers to move in a virtual world in the course of two days. On the first day, they were asked to follow markers they lead to five different places and try to memorize routes. On the second day, each volunteer was placed in a machine fMRI and then asked to first mentally to plan their routes to the sites they had visited the day before, then actually visit them in their virtual world , sans markers, which meant they had to get using the mental map they created.
In analyzing the data, researchers found that orbitofrontal cortex became more active as volunteers thought about where they would go and interact with the hippocampus-also found that the frontopolar cortex appeared to play a role in regulating the activity between the two regions. The team also found that three other regions: the hippocampus and perirhinal and retrosplenial cortexs complex brain became active as volunteers imagined in their minds the route they would take to reach a particular destination.
Overall, the results suggest that the brain has a very sophisticated network of parts of the brain and pathways that are involved in navigation and the study has provided new insights into how the brain works in general.
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Posted in: Neuroscience