The first five consciousnesses are the eye-consciousness and that of the ear,nose tongue and body which are also known as our senses
The sixth consciousness is equivalent to the scientific term "mind." In Theravada this is the main consciousness and contain the seventh and eighth.Thus Theravada does not admit any other consciousness.
The seventh consciousness, which holds the eighth consciousness as one's self is an object to be meditated away by sunyata samadhi
The eighth consciousness, emphasized in the Mahayana, contains all seeds, good or bad,from which the other seven types of consciousness are formed.
The ninth consciousness,emphasized in Tantra, contains all the virtues and potentialities of Buddhahood.When one is Fully Enlightened,this consciousness becomes the totality of wisdom WITHOUT ANY SENSE OF CONSCIOUSNESS.
Religions emphasize that there is a soul, a higher-self or spirit which is the master of a being who may descend into hell or ascend to heaven. It does not die and on it depends transmigration when it descends(in some religions) though it may unite with God when it ascends.
Buddhism admits this as only the eighth consciousness.Above the eighth consciousness,when it is sublimated through sublimation upon no-ego(sunyata), THERE IS NO SOUL AT ALL.
Thus when Buddhist say that there is no soul,it means that in Buddhahood, there is no soul but for common persons there are 'changable souls' which carry their lives wandering in transmigration.The 'soul' is the eighth consciousness, which should meditated away by sunyata samadhi to eventually become the wisdom of Buddhahood(C M Chen)www.sgi-usa-southbaycc.org/study/Nine_C ... nesses.pdf www.examiner.com/buddhism-in.../why-nic ... hism-works