I have noticed that whenever I saw pictures of Chico Xavier psychographing I saw him with his hand against his head. I thought that may have just been how he felt best when he communicated with spirits.
I read a passage in the book, Life Beyond the Veil, in The Lowlands of Heaven section. It was a communication to the Rev G. Vale Owen from his mother in the spirit world. His mother tells him the best method to hear her clearly in his mind. The bold words from G. Vale Owen: Read More.