They're encephalization quotient, or EQ, is 1.3, and remember humans are 7.5.

他们的脑化商数， 或 EQ，是 1.3，记住人类是 7. 5。

And that is the rat. Rats have an in encephalization quotient or a brain to body mass ratio of 0.8.

那就是老鼠。大鼠的脑化商数或脑质量比为 0.8。