Upper level: b139 Global mental functions, other specified and unspecified
(Function of energies and instinctual drive)
General mental functions of physiological and psychological mechanisms that cause the individual to move towards satisfying specific needs and general goals in a persistent manner.
(additional explanation: General, mental function as physiology and the psychology target machine beginning to achieve 21 individual Z and the overall target consistently. )
Inclusions: functions of energy level, motivation, appetite, craving (including craving for substances that can be abused), and impulse control
Exclusions: consciousness functions (b110); temperament and personality functions (b126); sleep functions (b134); psychomotor functions (b147); emotional functions (b152)
Lower livel: