Bruxism into three groups, namely central or pathophysiological factors, psychosocial factors and peripheral factors. The World Health Organization's International Classification of Diseases 10th revision does not have an entry called bruxism, instead listing "tooth grinding" under somatoform disorders. To describe bruxism as a purely somatoform disorder does not reflect the mainstream, modern view of this condition (see causes). The ICSD-R described three different severities of sleep bruxism, defining mild as occurring less than nightly, with no damage to teeth or psychosocial impairment; moderate as occurring nightly, with mild impairment of psychosocial functioning; and severe as occurring nightly, and with damage to
Involuntary narrative same object, media or technology are perceived as a continuum. When a purposeful overlap of the physical and the virtual takes place, it could be called vireal (Gramelsberger, Klein). The involuntary narrative, hypnagogia and the Dreamachine, trigger what is already in the individual by referring to his or her own past history. The involuntary narrative is accidental and in that differs from both the hypnagogic state and the state induced by the Dreamachine. Auditive and visual signals, as for example mobile phone ringtones, virtual identity thumbnails, alert sounds, signals and information screens in public transport, adverts displayed in LED screens,