What part does he use to hole the pen/pencil? The brain stem? (I really dislike stupid copy editors!)
Hold?
What's your problem with the headline as written? You could argue that the preposition should have been "from," but "draws from" would be even more ambiguous.
If you're going to rail on stupid copy editors, you really shouldn't be asking what he uses to hole the pencil. And you should know that memory does not reside in the medulla.
hole?
Mr. Pot? Meet Mr. Kettle.