Forms of meditation
Meditation has been defined as: "self regulation of attention, in the service of self-inquiry, in the here and now." The various techniques of meditation can be classified according to their focus. Some focus on the field or background perception and experience, also called "mindfullness"; others focus on a preselected specific object, and are called "concentrative" meditation. There are also techniques that shift between the field and the object.
In mindfulness meditation, the meditator sits comfortably and silently, centering attention by focusing awareness on an object or process (either the breath, a sound: a mantra, koan or riddle evoking questions; a visualisation, or an exercise). The meditator is usually encouraged to maintain an open focus.
Concentration meditation is used in many religions and spiritual practices. Whereas in mindfulness meditation there is an open focus, in concentration meditation the meditator holds attention on a particular object (e.g., a repetitive prayer) while minimizing distractions; bringing the mind back to concentrate on the chosen object. In some traditions, such as Vipassana, mindfulness and concentration are combined.