text:  Head VI is an oil @-@ on @-@ canvas painting by the Irish @-@ born English <unk> artist Francis <unk> , the last of six panels making up his " 1949 Head " series . It shows a bust view of a single figure , modeled on Diego <unk> 's Portrait of Innocent X. <unk> applies forceful , expressive brush <unk> , and places the figure within a glass cage structure , behind curtain @-@ like <unk> . This gives the effect of a man trapped and <unk> by his surroundings , screaming into an <unk> void . 
  