> "Many of those changes suggest that you have a brain that is wired up at a much more baseline excited level," Ramirez reported. "You need much more sensory st

> "Many of those changes suggest that you have a brain that is wired up at a much more baseline excited level," Ramirez reported. "You need much more sensory stimulation to get [the brain's] attention." I wonder what is control group on this study. Some rat closed in small sterile cage with zero stimulation. Of course rat from such environment needs less stimulation to get excited. It would be valid to compare with rats from their natural environment with all the exciting smells, predators, food collecting...