Anesthesia blocks sensation by cutting off communication within the cortex

Under propofol general anesthesia, sensory input still reaches the brain, but signals do not spread. A new study suggests consciousness requires cortical regions to all be ‘on the same page.’

​Under propofol general anesthesia, sensory input still reaches the brain, but signals do not spread. A new study suggests consciousness requires cortical regions to all be ‘on the same page.’ Under propofol general anesthesia, sensory input still reaches the brain, but signals do not spread. A new study suggests consciousness requires cortical regions to all be ‘on the same page.’