Fig. 4

Episodes of rhythmic movement during the baseline and intervention night for each case that showed rhythmic movement in the laboratory. Observed semiologies for case 2 were head banging (I: while bed was moving in habitual direction, II: bed moving perpendicular to habitual movement) and body rocking. Observed semiologies for case 3 were I: body rocking sideways and II: body rocking forward, furthermore lying still on all fours was observed (III). Case 4 did not show any movements in the two nights