 The mind switches from its inactive mode to any of the five-sense-door processes when an object occurs at the “door” of the appropriate sense faculty. This process of sensory perception involves a greater number of functions: 1) disturbed inactive mind: a function that arises due to the stimulus of the sense object. It lasts for two moments, during which sensory contact takes place, i.e., a physical impact of the sense object on the physical matter of the appropriate sense faculty; 2) adverting: lasts one moment, during which the mind turns towards the object at the appropriate sense “door;” 3) perceiving: lasts one moment and is the sheer perception of the sense object with minimal interpretation; 4) receiving: lasts one moment and performs the intermediary role of enabling transit to and from the appropriate discriminative consciousness, whether visual, auditory, etc.; 5) investigating: lasts one moment and performs the role of establishing the nature of the sense object and of determining the mind’s response to that object that has just been identified; 6) impulsion: same as in the mind-door process; 7) retaining: same as in the mind-door process. As an example, visual perception involves not only seeing itself, but also a succession of moments of fixing of the visual object in the mind, recognition of its general features, and identification of its nature. In both the mind-door and five-sense door processes, the sense faculty and its sense object condition the arising of a present moment of a corresponding apprehending consciousness, that is, perception here is modeled on simultaneous conditioning. And in both the mind-door and five-sense door processes, when the retaining function ceases, the mind reenters its inactive mode.