Widening the mental consciousness

The lightness, the feeling of the disappearance of the head and that all is open is a sign of the wideness of the mental consciousness which is no longer limited by the brain and its body senseā€”no longer imprisoned but wide and free. This is felt in the meditation only at first or with closed eyes, but at a later stage it becomes established and one feels always oneself a wide consciousness not limited by any feeling of the body.

Ref: Letters on Yoga – III