he starts acting really childish, asking for his father,

就如同孩子一般想要找爸爸
who died over 50 years ago.

他父亲50年前就去世了
The head injury must have been the trigger

脑部受伤肯定是诱因
and he woke up with the delusion that he was a boy again.

醒来后他一直认为自己又变成了那个小男孩
Like a Peter Pan Syndrome.

就像彼得潘综合症一样
And if there was damage to the prefrontal cortex,

如果前额叶皮质受损
he might lack rational thought and empathy.

他的理性和同情心都可能会丧失
So he's a psychopath who thinks he's a kid again

这么说他是精神病患者认为自己是个孩子
and wants to avenge his father's death.

想为父亲的死进行复仇
If the robbery that killed the father happened in the theater...

如果害死他父亲的抢劫案发生在那个剧院
He's reenacting that moment.

他在重铸那个时刻
Give me your money. Give it now.

把钱交出来快点