Fundarò A, Cassone M C
Boll Soc Ital Biol Sper. 1980 Nov 30;56(22):2375-80.
The Chamomile, Cinnamon, Absinthium, Mace, Origanum essential oils have been experimented on rat's operant conditioning behaviour. At the highest doses all the oils caused a depressive effect (probably due to toxicity) while at the lowest doses they caused weak or doubtful effects. Only the Origanum oil caused a depressive effect which clearly seems related to a direct action on the CNS.
洋甘菊、肉桂、苦艾、肉豆蔻、牛至精油已在大鼠的操作性条件反射行为上进行了实验。在最高剂量时，所有精油均产生抑制作用（可能由于毒性），而在最低剂量时，它们产生微弱或不确定的作用。只有牛至精油产生了明显与对中枢神经系统的直接作用相关的抑制作用。
