Basic forms of emotion and the dynamics of free-energy.

aFirst time-derivative of free-energy at time .bSecond time-derivative of free-energy at time .cNegative value very close to zero.dPositive value very close to zero.a. 时刻下自由能的一阶时间导数。b. 时刻下自由能的二阶时间导数。c. 极度趋近于零的负值。d. 极度趋近于零的正值。