Speaker Name(s): A.Randal McIntosh, Ph.D. Description: You only have to walk through the downtown core during rush hour to realize how hard it is to parse signal and noise in the environment. One would think that a noisy brain would make signal detection more difficult. However, the brain seems to work best with a bit of internal noise. Brain noise increases with maturation, and as we age, changes in brain noise may compromise sensory and cognitive function. Finally, in clinical conditions, the re-establishment of optimal brain noise tracks with recovery. It could be said that a noisy brain is a healthy brain.