physiologically, why aren’t our imaginations of sensations as vivid (good or bad) as the real experience?

Question

physiologically, why aren’t our imaginations of sensations as vivid (good or bad) as the real experience?

In: Biology

Answer 1

Tangentially related: trauma (ptsd) can cause intense ‘memories’ that involve physical sensations that match those that occurred during the trauma. Not exactly imagination, but still a mental event that can cause very vivid sensations.