What is Deep Third or Deep POV?

You may have heard the term Deep Third or Deep Point Of View, but what does it really mean?

"Deep POV is to the writer what method acting is to the actor. It requires the writer to submerge herself in the character from whose point of view a scene is being seen. It requires a casting off of all inhibitions. The writer becomes the character." (Exert from an article by Maeve Maddox at www.dailywritingtips.com).

 Deep Third is writing in the Third Person but taking it further by slowing down time and showing the reader what's going on from the character's point of view. It uses the surroundings, thoughts, feelings, or anything else to steep the reader with what's going on in the characters head. Sensory detail (the use of sight, sound, smell, touch and taste) can play a role in this as well. But it's the thought process of the character that the reader needs to be plugged into. It's about giving the reader an opportunity to "step into" the characters head and be the character without even realizing it (if the Deep POV is done right).