I will be adding more to this later but I wanted to post something that I found interesting that I read before I forgot.
SRM (Sleep-Related Mentation
SRM refers to any perceptual or mental state that occurs in temporal relation to some sleep process or state. IN humans we call some forms of SRM "dreams," where "dreams" refer to extended experiences of emotion laden imagery structured into story-like action episodes typically concerning the dreamer and his/her socially significant others. Many SRMs, however, are not dreams. Instead, they may be classified as hypnagogic images or fleeting and isolated though fragments, ongoing ruminations, verbalization's, or all manner of other types of mentation.