Same deal, although my visualization ability is weaker than most in general I think, faces are definitely the hardest.<p>For me the feeling is very similar to having a word just on the &quot;tip of your tongue&quot;, where you know the word you want, you can <i>feel</i> it, its meaning, etc.  You know you&#x27;d recognize it instantly if you heard (saw) it, but you can&#x27;t quite bring it up.<p>Sometimes I can&#x27;t even tell if I actually am visualizing a face or not, because it&#x27;s like for a split second I feel like I can almost see it, but then when I focus on it, it&#x27;s gone.  And other times I know I have seen people&#x27;s faces in my mind, but it&#x27;s generally spontaneous, not when I actively try to pull one up.  Kind of like seeing something in your peripheral vision, but not being able to focus on it.