Single data point: Many years ago, I suffered a severe concussion and was unconscious for a while. For a couple of days I heard voices calling my name even when

Single data point: Many years ago, I suffered a severe concussion and was unconscious for a while. For a couple of days I heard voices calling my name even when alone. While my inner dialogue is clearly internal, those voices were spontaneous, which felt eerily external. I think those were flashbacks of people talking to me while I was unconscious.