Antaḥkaraṇa
A Sanskrit word literally meaning “internal instrument,” wrongly spelt as Antaskarana by early theosophical writers. Explanations of this term vary somewhat according to the system of belief involved. In ADVAITA it is comprised of the intellect, the mind, the ego and the consciousness. Using the Sanskrit terms these would be named the buddhi, manas, ahankara, and cit; all these terms are explained in some detail elsewhere.
The Sankhya school teaches that antahkarana comprises only the intellect, mind and ego. In Helena P. BLAVATSKY’s The Voice of the Silence (p. 243) she defines its function as, “Antaskarana is the lower Manas, the Path of communication or communion between the personality and the higher Manas or human Soul. At death it is destroyed as a Path or medium of communication, and its remains survive in a form as the Kamarupa – the ‘shell.’”