[hjyAMqqT]

The Upaya Sutta states:

At Savatthi. There the Blessed One said, "One attached is unreleased; one unattached is released. Should consciousness, when standing, stand attached to (a physical) form, supported by form (as its object), landing on form, watered with delight, it would exhibit growth, increase & proliferation." This sutta clearly describes how consciousness is stirred up, generated or engaged.

An easy example is when a human being or animal is bored or has sensual desire. They will go searching for an sense object to engage with, with a consciousness, mind-body & sense organs under the influence of ignorance & defilement.

This is how ignorance conditions consciousness, the mind-body & the sense organs in dependent origination. It is straight-forward psychology.