the Nasadiya-sukta of the Rigveda. Adi Shankara, in his commentary on Yoga Sutras, distinguishes Dhyana from Dharana, by explaining Dhyana as the yoga state when there is only the "stream of continuous thought about the object, uninterrupted by other thoughts of different kind for the same object"; Dharana, states Shankara, is focussed on one object, but aware of its many aspects and ideas about the same object. Shankara gives the example of a yogin in a state of dharana on morning sun may be aware of its brilliance, color and orbit; the yogin in dhyana state contemplates on sun's orbit alone for example, without being interrupted by its color, brilliance or other related ideas. In Patanjali's Raja Yoga, also called "meditation yoga", dhyana is "a refined meditative practice", a "deeper concentration of the mind", which is taken up after preceding practices. In Hinduism, dhyāna is considered to be an instrument to gain self-knowledge. It is a part of a self-directed awareness and unifying Yoga process by which a world that by default is experienced as disjointed, comes to be experienced as Self, and an integrated oneness with Brahman. The Brahman has been variously defined in Hinduism, ranging from non-theistic non-dualistic Ultimate Reality or supreme soul, to theistic dualistic God. Dharana The stage of meditation preceding dhyāna is called dharana. Dharana, which means "holding on", is the focusing and holding one's awareness to one object for a long period of time. In Yogasutras, the term implies fixing one's mind on an object of meditation, which could be one's breath or the tip of one's nose or the image of one's personal deity or anything of the yogi's choice. In the Jangama Dhyāna technique, for example, the meditator concentrates the mind to a spot between the eyebrows. According to Patañjali, this is one method of achieving the initial concentration (dhāraṇā: Yoga Sutras, III: 1) necessary for the mind to become introverted in meditation (dhyāna: Yoga Sutras, III: 2). In deeper practice of the technique, the mind concentrated between the eyebrows begins to automatically lose all location and focus on the watching itself. This step prepares one to begin the practice of Dhyana. Dhyana The Yogasutras in verse 3.2 and elsewhere, states Edwin Bryant, defines Dhyana as the "continuous flow of the same thought or image of the object of meditation, without being distracted by any other thought". Vivekananda explains Dhyana in Patanjali's