EFFECTS OF HEMEROCALLIS ON SLEEP IN MICE

Freeze-dried flowers of the Akinowasuregusa (Hemerocallis fulva L. var . sempervirona M. Hotta) a Hemerocallis genus of the lily family, were fed to C57BL strain mice. The slow wave sleep and paradoxical sleep o f the Hemerocallis-treated group increased during the dark period. The differences between the control group and the Hemerocallis-treated gr oup were significant (P < 0.05). The Hemerocallis feeding did not caus e a change in sleep time during the light period. As a result, there w as no significant change in the sleep-time percentage over a 24-h peri od.