(1) Antahkarana Laya Chintana, (2) Pancha Bhuta Laya Chintana and (3) Omkara Laya Chintana. In Antahkarana Laya, you must think that the mind is merged in Buddhi; Buddhi in Avyaktam; and Avyaktam in Brahman.
ANTAHKARANA - general concept for the psychic functions, the inner instruments or internal organs:
1) MANAS - the mind, the inner organ of perception
2) BUDDHI - the understanding, the intellect, the ability to make decisions and draw conclusions
3) CHITTA - consciousness ...
Antahkarana: The mind.
Antaratma: The inner self, residing in the heart.
Ardha Chandrasana: In Hatha Yoga, the Half-Moon posture.
Though the Antahkarana is one, yet it assumes four forms, viz., (i) Manas, (ii) Buddhi, (iii) Chitta and (iv) Ahamkara according to the different functions it performs. Likewise, though Prana is one, it assumes five forms viz.
Feelings are experienced by the antahkarana (the manifest mind), not by the self. In the Yoga Sutras (2:24) it is said that avidya, i.e. false knowledge, is the cause of the self's experience of pleasure and pain.
Karma Yoga is the Yoga of action which purifies the heart and prepares the ~ (the heart and the mind) for the reception of Divine Light or attainment if Knowledge of the Self. The important point is that you will have to serve humanity without any attachment or egoism.[web 57] ...
~: The fourfold internal instrument viz., mind, Buddhi, Chitta and Ahamkara.
Anushthana: Sustained practice.
Artha: Meaning; purpose; objects.
Asana: Posture; seat.
1. Chitta is the Subconscious mind. It is the mind-stuff. It is the store-house of memory. Samskaras or impressions of actions are imbedded here. It is one of the four parts of ~ or inner instruments, viz., mind, intellect, Chitta and Ahankara or ego.
~: Internal instrument such as mind, intellect, ego and the subconscious mind.
ANTARATMAN: Inner Self.
ANTARYAMIN: Inner witness.
ARHATA: A perfected Soul.
~: inner instrument or organ; the fourfold mind: mind, intellect, ego and subconscious mind
arati: waving of light before the Lord
artha: an object of desire, wealth
asana: posture, seat
ashtanga yoga: the eight-limbed raja yoga of Maharshi Patanjali ...
See also: What is the meaning of Karana, Antah, Mind, Yoga, Body?