YOU SAID:

My mother slapped me very hard on my head where my brain is

INTO JAPANESE

母は私の脳のある頭を強く叩きました

BACK INTO ENGLISH

My mother hit me hard on the head where my brain was.

INTO JAPANESE

母は私の脳のある頭を強く殴りました。

BACK INTO ENGLISH

My mother hit me hard on the head where my brain was.