Listen to the Summary of Susan Blackmore's Consciousness in 20 minutes. Please note: This is a summary & not the original book. The human brain is the most complex object in the known universe. It contains about 100 billion neurons connected by trillions of synapses, as well as billions of supporting glial cells and blood vessels. The brain and spinal cord together make up the central nervous system, the spinal cord being connected to the brain stem and then midbrain which is responsible for controlling the sleep-wake cycle...