sleep state misperception
... that a person with sleep state misperception may believe they slept for only four hours while, paradoxically, sleeping a full eight hours?
... that a person with <b id="mwHpA"><a href="./Sleep_state_misperception" id="mwHpE" rel="mw:WikiLink" title="Sleep state misperception">sleep state misperception</a></b> may believe they slept for only four hours while, <a href="./Paradox" id="mwHpI" rel="mw:WikiLink" title="Paradox">paradoxically</a>, <a href="./Sleep" id="mwHpM" rel="mw:WikiLink" title="Sleep">sleeping</a> a full eight <a href="./Hour" id="mwHpQ" rel="mw:WikiLink" title="Hour">hours</a>?