The fact that so many different conceptions of this term are being applied highlights the striking contrast between the conceptual exposition and the familiarity of consciousness.<ref name="MetzingerLexikon">Metzinger, Encyclopedia entry ''Bewusstsein'', 2009, in H.-J. Sandkühler (Editor), ''Enzyklopädie der Philosophie''. Hamburg: Meiner. </ref>
Some of the distinctions below are inspired by (Metzinger, 20082009).<ref name="MetzingerLexikon"/>
= Logical structures of the term consciousness =