The eye is quick to adjust to brightness and slow in adjusting to darkness. During difficult mental tasks, many will close their eyes to eliminate the environment completely. For the best complexion, furnishings, food, etc., the light source should be well balanced in its emission of red, yellow, green, blue and violet. Programming light for warm in morning, increased intensity and whiteness as the day progresses, with complexion lighting at coffee breaks and lunch hour, then pink or orange at dusk. Confinement and monotony caused animals protected from its natural enemies, caged and secure, to lose interest in procreation, could devour and destroy its kind or any other kind, or starve itself to death.
Animals lapse into a fatal lethargy.
Anyone left alone in isolation, surrounded by blank walls tends to withdraw. Infants suffering from sensory deprivation may have difficulty readjusting to a normal environment as their whole personality may be affected. If normal persons develop these psychotic-like states, and simple mental distress on an airplane trip, the sick person may have severe emotional strain, metabolic disturbance and other problems. Schizophrenics may see color as an unwanted intrusion on their inner life, this type of rejection is known as color shock. Is the amount of light or dark in a color, regardless of hue.