Regression results for neuron excitement.

Region 20 is the most recent region, and region 2 is the oldest region. Dummy variables are used to isolate the effect of neuron excitement for each region. Region 1 is removed to avoid the dummy variable trap. The largest coefficient is region 19 (x18), the second most recent region, with a value of 0.055.区域20为最新的区域，区域2则为最古老的区域。本研究使用虚拟变量（dummy variable）来分离各区域的神经元兴奋效应。为避免虚拟变量陷阱，我们移除了区域1。系数最大的为区域19（对应x18），该区域为第二新的区域，其系数值为0.055。