不好意思，请版友们帮我看一下这句话是什么意思
The energy expenditure of the subjects' brains increases when a design
that completes the initially recognized pattern is determined.
我看不懂when a design....is determined那里
前面的部分我理解为“这个实验对象花费的脑力增加当...”
另外有一段文字可能可以帮助版友理解这里要讲的意思，
我也一并贴上了
An experiment was done in which human subjects recognize a pattern within
a matrix of abstract designs and then select another design that completes
that pattern. The results of the experiment were surprising. The lowest
expenditure of energy in neurons in the brain was found in those subjects who
performed most successfully in the experiments.
先谢谢大家噜