Apparently it’s been around for a good while, since Dickens used it, at least on this one occasion, possibly more.
"In literary criticism, stream of consciousness is a literary technique which seeks to portray an individual's point of view by giving the written equivalent of the character's thought processes, either in a loose internal interior monologue, or in connection to his or her sensory reactions to external occurrences. Stream-of-consciousness writing is strongly associated with the modernist movement. Its introduction in the literary context, transferred from psychology, is attributed to May Sinclair."
http://en.wikipedia.org/wiki/Stream_of_consciousness_writing"In linguistics and rhetoric, the historical present refers to the employment of the present tense when narrating past events. It is used in narrative to make the events narrated vivid, or to contrast some particular events with others. Sometimes, though, it can make the narrative boring, if not used properly. Historians are known to often use this style.
Following is an excerpt from Dicken's David Copperfield, in which we can see the shift form the past tense to the historical present:"
“ If the funeral had been yesterday, I could not recollect it better. The very air of the best parlour, when I went in at the door, the bright condition of the fire, the shining of the wine in the decanters, the patterns of the glasses and plates, the faint sweet smell of cake, the odour of Miss Murdstone’s dress, and our black clothes. Mr. Chillip is in the room, and comes to speak to me.
'And how is Master David?' he says, kindly.
I cannot tell him very well. I give him my hand, which he holds in his. (Chapter IX)
http://en.wikipedia.org/wiki/Historical_present