The nine consciousnesses can be thought of as different layers of consciousness which are constantly operating together to create our lives. The Sanskrit word vijnāna, which is translated as consciousness, includes a wide range of activities, including sensation, cognition and conscious thought. The first five of these consciousnesses are the familiar senses of sight, hearing, smell, taste and touch. The sixth consciousness is the function that integrates and processes the various sensory data to form an overall picture or thought, identifying what it is that our five senses are communicating to us. It is primarily with these six functions of life that we perform our daily activities.
Below this level of consciousness is the seventh consciousness. Unlike those layers of consciousness that are directed toward the outer world, the seventh consciousness is directed toward our inner life and is largely independent of sensory input. The seventh consciousness is the basis for our sense of individual identity; attachment to a self distinct to and separate from others has its basis in this consciousness, as does our sense of right and wrong.
Below the seventh consciousness, Buddhism elucidates a deeper layer, the eighth or ālaya consciousness, also known as the never-perishing or storehouse consciousness. It is here that the energy of our karma resides. Whereas the first seven consciousnesses disappear on death, the eighth consciousness persists through the cycles of active life and the latency of death. It can be thought of as the life-flow that supports the activities of the other consciousnesses. The experiences described by those who have undergone clinical death and been revived could be said to be occurrences at the borderline of the seventh and eighth consciousnesses.
An understanding of these levels of consciousness and the interaction between them can offer valuable insights into the nature of life and the self, as well as pointing to the resolution of the fundamental problems that humanity confronts.
According to Buddhist teachings, there are specific deep-seated delusions in the seventh consciousness regarding the nature of self. These delusions arise from the relationship between the seventh and eighth levels of consciousness and manifest as fundamental egotism.
Buddhist teachings describe the seventh layer as emerging from the eighth consciousness: it is always focused on the eighth consciousness of the individual, which it perceives as something fixed, unique and isolated from other things. In reality, the eighth consciousness is in a state of continual flux. At this level our lives constantly interact, exerting a profound influence on each other. The perception of a fixed and isolated self that the seventh consciousness generates is thus false.
The seventh consciousness is also the seat of the fear of death. Being unable to perceive the true nature of the eighth consciousness as an enduring flow of life energy, it imagines that upon death, the eighth consciousness will become permanently extinct. Fear of death thus has roots in the deep layers of the subconscious.
The delusion that the eighth consciousness is one's true self is also termed fundamental ignorance, a turning away from the interconnectedness of all being. It is this sense of one's self as separate and isolated from others that gives rise to discrimination, to destructive arrogance and unbridled acquisitiveness. Humanity's ravaging of the natural environment is another obvious result."
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More Info..
- The Nine Consciousnesses
- Vacuum States of Consciousness: A Tibetan Buddhist View” B. Alan Wallace
- The Buddha on Meditation and States of Consciousness
- The Buddha on Meditation and Higher States of Consciousness
- Higher consciousness @ Wikipedia
- Buddha Concepts @ Earth People Foundation
- Shakyumuni Buddha and the 10 states of consciousness