Initial evidence is found that the brain has a ‘tuning knob’ that is actually influencing behavior. Brain circuits can tune into the frequency of other brain parts relevant at the time. The scientific magazine Neuron is publishing the results of researchers at Radboud University the Netherlands on January 22.
Animals (and humans alike) have a metal map of the surrounding environment, consisting of place cells. These cells correspond with places in the physical space and fire when the animal reaches the place or remembers it. The mental map is fed by two sorts of information: with memories from earlier experiences, and with sensory information. But how does the mental map upload this information?
Direct measurements in the brain of mice, looking for their way in a maze, show that memory information is sent with another frequency to the mental map than sensory information is. The brain area representing the mental map synchronizes with these frequencies like a radio receiver: it is only tuning into the information that is important at a given time, an international team of researchers led by Francesco Battaglia from the Donders Institute for Brain, Cognition and Behaviour at Radboud University Nijmegen show. This research sheds light on the intriguing question how brain parts choose relevant information from the constant scattering of neurons going on in the brain.
