Atman (आत्मन्) is the sanskrit term for Monadic Consciousness.
If the Wikipedia entry is any indication, there is considerable confusion surrounding the term with it being used sometimes to refer to Monadic Consciousness, sometimes to the Fabric of Consciousness before Instantiated Awareness, and sometimes even the "defiled self" (i.e. Bodily Ego). Here we will confine the term to mean the Instantiated Awareness of Monadic Consciousness.
Atman is an egoic instantiation in the Fabric of Consciousness. Atman is visually represented as an "eye" in the Tree of Lights.
Atman (आत्मन्) / parAtman परात्मन्, Augoeides, Holy Spirit, Intensification of Consciousness, Monad, Monadic Intensification, Ohr, Resident Monadic Consciousness, Self, spirit, Super Ego, immortal spirit, Spiritual Ego, Soul, Inner-Self, Higher Self, True Self, The Witness, etc..
Sharp, Michael (BOLVI). The Book of Light - The Nature of God, the Structure of Consciousness, and the Universe Within You. Volume One - Air. Lightning Path Press.