不少人信誓旦旦地要控制饮食,可是看见美味就管不住嘴。为何无法抗拒诱惑?科学家说,原因在于名为前额叶中央皮质的一个大脑区域。美国伊利诺伊大学用老鼠做实验,训练老鼠知道按动一个操纵杆能得到小糖丸,再训练它们收到一个表示“停止”的信号时不按操纵杆。研究人员发现,老鼠接收到“可以”和“停止”信号时,前额叶中央皮质中的一些神经都会变得活跃。 Many people vowed to control the diet, but can not stop seeing the delicious mouth. Why can not resist the temptation? Scientists say, because of a brain area called the prefrontal cortex. The University of Illinois at Chicago experimented with mice. Training the rats to know that pressing a joystick gave them small pills and training them to receive a signal indicating “STOP” without pressing the joystick. The researchers found that when rats received the “can” and “stop” signals, some nerves in the central prefrontal cortex became active.