Eight consciousnesses

(rnam shes tshogs brgyad): 1) The undetermined and amorphous ground consciousness, already obscured by ignorance but undetermined with respect to virtue and non-virtue.
2 to 6) The consciousnesses associated with each of the five sense organs.
7) Mind consciousness, or intellectual cognition of the senses.
8) Intellection which is predominantly tainted by the negative emotions (klesas).
The first six do not accumulate karma, while the last two do. [MR]