https://www.ninds.nih.gov/health-information/public-education/brain-basics/brain-basics-life-and-death-neuron#:~:text=Neurons%20are%20information%20messengers.,rest%20of%20the%20nervous%20system. https://www.brainfacts.org/3D-Brain#intro=false&focusBrain
https://www.verywellmind.com/lesson-four-states-of-consciousness-2795293
https://www.verywellmind.com/lesson-four-states-of-consciousness-2795293