How to understand the essence of consciousness

Consciousness is essentially the function of the human brain, the subjective image of the objective world and the product of society.

1, consciousness is the function of human brain, and human brain is the material organ of consciousness;

2. Consciousness is the subjective image of the objective world and the reflection of the human brain on the objective world. Consciousness is the unity of subjective and objective;

3. Consciousness is the product of society.

From the origin and essence of consciousness, we can see that consciousness depends on matter, which is primary and consciousness is secondary.