I suppose the shock had addled his poor old brain.

我想这个打击已经使他可怜的老脑筋变糊涂了。

《柯林斯英汉双解大词典》

In addition, yawning when it is extremely cold may be maladaptive, as this may send unusually cold air to the brain, which may produce a thermal shock.

另外，在极度寒冷的时候打呵欠也许不大合适，因为这时通常会将冷空气送到大脑，从而使大脑发生热冲击。

youdao

For two months the fugitives remained absent; in those two months, Mrs Linton encountered and conquered the worst shock of what was denominated a brain fever.

两个月以来逃亡的人不见踪影。在这两个月里，林惇夫人受到了而且也克服了所谓脑膜炎的最厉害的冲击。

youdao

Deep brain stimulation uses electricity to shock the brain in areas that help send messages to the body.

VOA: special.2009.02.03

The student asked this question very gently and non-threateningly, but her directness and the fact that she was an African American woman herself caused her question to rattle around my brain like a course of electric shock therapy.

FORBES: Why It's a Mistake for Doctors to be Color Blind

The shock wave shattered the thinnest bone of her skull, and fragments entered her brain, the hospital said.

CNN: January 3, 2013 -- Updated 1553 GMT (2353 HKT)

"He is a different kind of player to James with his power and strength all round the pitch, allied to a very good football brain, " said MacDonald, who was handed temporary charge of the club following Martin O'Neil's shock decision to quit.

BBC: Stephen Ireland deal pleases Villa boss Kevin MacDonald