How does Edgar Allan Poe use imagery in The Tell-Tale Heart?

Examples of Imagery:

“I heard a slight groan, and I knew it was the groan of mortal terror. It was not a groan of pain or of grief --oh, no! --it was the low stifled sound that arises from the bottom of the soul when overcharged with awe. I knew the sound well. Many a night, just at midnight, when all the world slept, it has welled up from my own bosom, deepening, with its dreadful echo, the terrors that distracted me. I say I knew it well. I knew what the old man felt, and pitied him, although I chuckled at heart.”

“I knew that sound well too. It was the beating of the old man’s heart. It increased my fury, as the beating of a drum stimulates the soldier into courage.”

“His eye was like the eye of a vulture, the eye of one of those terrible birds that watch and wait while an animal dies, and then fall upon the dead body and pull it to pieces to eat it.”