The Brain as a Black Body in a Black Box

The cranium houses the brain, and layers formed by the scalp, cranial bones, and meninges protect it from external energy, including light. Therefore, the brain can be viewed as a black body in a black box. The layers also protect the brain from external atmospheric or gravity force, and together with cerebrospinal fluid (CSF), it creates a microgravity or buoyant brain compartment. The brain curving (microgravity posture) mainly occurs at the mesencephalic-diencephalic junction and is thought to be because of the microgravity environment, thus, creating a nearly spherical-like brain geometry. The roughly spherical brain geometry, a black body with its heat irradiation, the presence of charged fluid in the brain extracellular space, and brain requirements to optimally cleanse waste products and be protective against micro-organisms may suggest a possible presence of plasma-like brain energy. This energy has the capability to emit infrared, and its amount is determined by black-body radiation and thermodynamics principles.