Some singularitarians believe that scientists are very close to creating a computer that can experience color, smell, pain, pleasure and love, as well as provide an alternative to death. Singularitarians believe that each person will 'reduce their consciousness into a pattern of electrons,' and either upload the individual's thoughts, memories and personality into a robot or remain as software living in some huge, complicated virtual domain. A few neuroscientists have devotedly continued to study consciousness as people have done for thousands of years. It could be 'an intangible phenomenon' or some 'substance different from matter.' These scientists believe people will eventually learn how to create 'artificial consciousness,' but it probably won't happen as currently imagined. Based on present-day imperfect findings in mathematics, logic, physics, chemistry and biology, humans in their natural world are not made of any other dimensions, magical, otherworldly or spiritual. So consciousness, being part of the natural world, should be able to be reproduced based on measurements. In humans and animals, the content of conscious experience is delivered by the cerebral cortex and the thalamus, which are required to be bathed in a neuromodulator substance in order to maintain consciousness. Logically, the mechanisms for staying conscious must exist independently in both cortical hemispheres. In addition, staying conscious is a very small part of what goes on in the brain. As measured, neural activity alone is not enough to sustain a conscious state. During sleep, consciousness fades, though the corticothalamic system neurons continue to fire at the same rate as a quiet, waking state. Electrical recordings of a brain that's dreaming show conscious mental activity, even though the sleeper is nonresponsive to the environment and muscles are paralyzed.