[讨论]瞳孔收缩vs思索？

看到有报道（有些老了）说，
“There is also some evidence that the iris changes as a function of emotional and attentional variables, including those involved in thinking and problem solving. Although empirical relationships has been studied ,their importance and possible cause-and-effect significance is not at all clearly understand yet(see Goldwater, 1972)”

我一直对此迷惑～
脑在进行高级神经活动时，会限制光的进入，以不至产生干扰不成？？

各位有什么想法？

瞳孔收缩还是放大？思索的时候一定有变化吗还是和人的视线想关？
[em15]

是收缩，不是放大！
放大是要见上帝或是紧张的时候可能会！

睡眠分5个阶段,其中"REM睡眠"阶段即由眼球快速运动而得名,即....睡眠的"REM睡眠"阶段,眼球是(快速)动的.而"REM睡眠"被普遍为与人在睡眠时的信息加工整理有关.如果再将控制"动眼"和控制"瞳孔"的神经放在一起考虑,或许对你有更大的启迪.