Discovery deepens understanding of brain's sensory circuitry

Because they provide an exemplary physiological model of how the mammalian brain receives sensory information, neural structures called "mouse whisker barrels" have been the subject of study by neuroscientists around the world for nearly 50 years. A new study shows that despite all that prior scrutiny, significant discoveries remain to be made. Specifically, researchers at Brown University have found a previously unknown set of matching barrel structures two layers deeper into the cortex than the whisker barrels, providing a more complete picture of the circuitry involved in handling sensory information.