Actigraphic Recording of Manic Symptoms Induced by Methylphenidate

Table 1

Mean values for actigraphic parameters before and during treatment with methylphenidate.

	Daily dosage and duration of treatment with methylphenidate
Parameter	0 mg for 16 days	18 mg for 6 days	36 mg for 5 days
Sleep efficiency ($\%$)	80.4	69.0	67.4
Sleep latency (h : min)	0 : 4	1 : 2	1 : 1
Actual sleep time ($\%$)	87.8	86.7	80.0
Actual wake time ($\%$)	12.2	13.4	20.0
Mean activity score	12.1	13.5	26.5
Movement and fragmentation index	31.2	34.9	44.8
Number of minutes moving	14.1	15.7	22.3
Number of minutes immobile	86.0	84.4	77.7