Imagery

While mantras, silence, Rhema, apt words use the appropriate sound Frequency towards introspection, Pictures ( imagery) involve the Extrinsic Quiet so as to be able to focus upon the Internal Activities of mind thoughtfulness .
Laws of Thought essentially communicate that Least extrinsic sensory input and pure Imagery inputs & processing facilitates Enhanced superior Meditativeness useful in higher level Cognitive functions, services and solutions.