Homeotherm state can bear a relationship to development of self-cognitive consciousness in evolution. Both explicit memory and consciousness could arise from sleep and dreams. In evolution several biomolecular and biophysical mechanisms have been developed, which made possible the formation of strong coherence of the information system in the brain. This coherence can serve as a basis of explicit holograph-like information system in the brain. This article, although not going into details about neuromolecular, biophysical or biophoton processes, proposes a relationship between thermoregulation and biophysical (biophoton) informational processes in the cells of the brain. It does not claim to solve the secret of consciousness, but points out that biophotons play an important role in information processes of the brain during sleep, dreams and wakefulness, and the brain can operate by pictures during thinking.