I have that too, its called hypervigilence. It's a symptom of the PTSD. My therapist told me that because of what happened, we have a heightened sense of awareness to protect ourselves. I can hear most of every converstation and I catch myself when I'm talking to people or doing something looking around because I need to know whats going on around me. Don't worry......apparently it's normal for us PTSD people. :crazy-eye