This paper begins with a contrast between two different views about whether the five sensory consciousnesses are accompanied by vikalpa. For the Abhidharmakośa, the five sensory consciousnesses are accompanied by the svabhāva-vikalpa whose nature is vitarka; but for Yogācāra, the five sensory consciousnesses are without that particular kind of svabhāva-vikalpa because vitarka is regarded as belonging merely to the mental consciousness. My hypothesis for explaining such difference is that Yogācāra assigns that particular kind of svabhāva-vikalpa to mental consciousness rather than (...) to the five sensory consciousnesses. I then look for possible functions of vitarka-vicāra that could map to svabhāva-vikalpa: (a) conceptual vitarka-vicāra in an unconcentrated state; (b) conceptual vitarka-vicāra in a concentrated state; (c) nonconceptual vitarka-vicāra in an unconcentrated state; (d) non-conceptual vitarka-vicāra in a concentrated state. I argue that the svabhāva-vikalpa in the Abhidharmakośa should map to (c) and (d), which in Yogācāra maps to mental perception (mānasapratyakṣa) stipulated by Dignāga. This refers to the discernment of the shape of a cognitive object in the foreground against the background. I end this paper with some general observations about why Yogācāra maps the svabhāvavikapla to the mental consciousness, and about the different senses covered by the Buddhist notion of vikalpa, which is broader than the sense of "conceptualization" as we now understand it. (shrink)