become empty-headed

[GoodTaste]

Some people are eloquent privately or at home. But when they have to speak to the public, they would all of suddent become empty-headed and stammering. This phenomenon is called Public Speaking Phobia.

Source: Free thinking in English practice by me.

Is "become empty-headed" natural in English?

I've been wondering whether some phrase like "his head becomes empty when he tries speaking in English" sounds natural.

 

[Tarheel]

Some people are eloquent privately or at home. But when they have to speak in public, they [STRIKE]would[/STRIKE] all of suddent become empty-headed and stammer. This phenomenon is called public speaking phobia.

Source: Free thinking in English practice by me.

Is "become empty-headed" natural in English?

I've been wondering whether some phrase like "his head becomes empty when he tries speaking in English" sounds natural.

It's natural enough.

 

[Rover_KE]

No. They become tongue-tied or their mind goes blank.

 

[Tarheel]

After seeing Rover's answer I am rethinking mine.