In '''natural somnambulism''', the mind is generally engrossed by some ‘''dominant idea''’ '''''of its own''''', and cannot be directed by ''external suggestions'', except such as may be ''in harmony'' with it.<ref name="Carpenter1852">{{cite web |title=On the Influence of Suggestion in Modifying and directing Muscular Movement, independently of Volition |author=William B. Carpenter |publisher=Royal Institution of Great Britain (originally) |year=1852 |issn=1430-6972|url=http://www.sgipt.org/medppp/psymot/carp1852.htm |quote=Materialien und Dokumente zum ideomotorischen (Carpenter) Effekt, hier die Originalarbeit. |accessdate=2 January 2016}}</ref> | In '''natural somnambulism''', the mind is generally engrossed by some ‘''dominant idea''’ '''''of its own''''', and cannot be directed by ''external suggestions'', except such as may be ''in harmony'' with it.<ref name="Carpenter1852">{{cite web |title=On the Influence of Suggestion in Modifying and directing Muscular Movement, independently of Volition |author=William B. Carpenter |publisher=Royal Institution of Great Britain (originally) |year=1852 |issn=1430-6972|url=http://www.sgipt.org/medppp/psymot/carp1852.htm |quote=Materialien und Dokumente zum ideomotorischen (Carpenter) Effekt, hier die Originalarbeit. |accessdate=2 January 2016}}</ref> |