The vast majority of people have an ongoing conversation with themselves, an inner voice, that plays an important role in their daily lives. But between 5-10 per cent of the population do not have the same experience of an inner voice, and they find it more difficult to perform certain verbal memory...
Do you remember the last time you were talking to someone for more than a couple minutes? Maybe they were explaining something to you, or telling you a story. You might try to remember what they said later - you can't hear it, but your brain kind of recreates the sensation of having been spoken to even though your ears aren't receiving those sounds.
That's what having an inner voice is like (to me, anyway) - it's remembering a conversation that you never actually had.
My inner voice is my voice as I hear it, and is more obviously there when I'm contemplative or reflective on ideas and concepts, but it doesn't seem to actively dictate or narrate most of my actions as I go through the day, except perhaps in anxiety or adrenaline peaking situations. It does seem more likely to flip to the forefront when there's an 'emergency' sort of moment to help stay calm and rational where others may panic. I do have some 'imagery' thoughts but only when I'm on more of an autopilot with an activity.
Interestingly, I can have very vivid and detailed dreams filled with unique imagery and events that can seem very real and my inner voice kicks on sometimes during dreams, and I recognize it as a dream. I have at times been able to influence the direction of a dream that my subconscious usually seems to be running. These dreams can be expansive, I'm talking deep backstory, knowing things and languages I do not know, knowing details about history or science or math that I do not know, and having a strange hyper awareness of existence around me that I do not have when awake. The only really 'scary' dreams I've had since I was a kid are ones where I can't find my kids, or where my dad is still alive and shows back up at home like he was just living somewhere else for a while (and it's not so much scary as just hyper-confusing and stressful). The dad dreams are also some of the best dreams to have that inner voice of awareness happen.
An asshole mostly, but that's another issue. Helps you think through problems because you think about it before doing it. When I read fiction I try to imagine other voices. I read a lot when I was younger.
It's just a voice inside your head that says what you're thinking. Like when I'm typing this out it says the words as I type them or as I think ahead as to what to type.
Mines pretty positive. I tell myself how awesome I am a lot when I accomplish something. But I am pretty full of myself. Usually when it's being snarky it's about annoying situations or people.
There are times that it is quiet. If I'm thinking about music or something visual then my inner voice isn't saying much. If I'm watching tv or listening to something it's quiet, unless I think of something I have to do, like "fuck I've gotta send that email". It's generally pretty quiet if I'm doing something like drawing, but I may make little comments to myself in my head like "oh I need some more stuff over here" or something like that. If I meditate, I can keep it mostly quiet.