Upper level: b189 Specific mental functions, other specified and unspecified
Specific mental functions of focusing on an external stimulus or internal experience for the required period of time.
(additional explanation: Stability of attention for a long time. )
Inclusions: functions of sustaining attention, shifting attention, dividing attention, sharing attention; concentration; distractibility
Exclusions: consciousness functions (b110); energy and drive functions (b130); sleep functions (b134); memory functions (b144); psychomotor functions (b147); perceptual functions (b156)
Lower livel: