<unk> refers to the flow of thoughts in the conscious mind. The full range of thoughts of which one can be aware can form the content of this<unk> , not just verbal thoughts. Commonly used experimental techniques, including self-reporting, gives easier access to verbal thoughts than to thoughts more closely connected to senses other than hearing and activities other than speaking and writing.
Stream of consciousness 
Excited delirium
Unconsciousness
Lethargy
Confusion
Altered mental status pathophysiology
Agitation 
Stroke recovery