A form of meditation that emphasizes detached observation from one moment to the next, of a constantly changing field of objects. This flexibility is achieved by concentrating on one primary object (commonly the successive flow of inbreaths and outbreaths), until attention is relatively stable, and then allowing the field of objects of attention to expand (usually in stages) to include, ultimately, all physical and mental events – bodily sensations, thoughts, memories, emotions, perceptions, intuitions, fantasies – exactly as they occur in time.
Kabat-Zinn, J. (1982). An outpatient program in behavioral medicine for chronic pain patients based on the practice of mindfulness meditation: Theoretical considerations and preliminary results. General Hospital Psychiatry, 4(1), 33-47. doi: 10.1016/0163-8343(82)90026-3