When we close our eyes, some of us maybe don't have any sensations for their visual function. But for the others they can "see" (visualize) any objects or visual modalities like such kinds of colours and shapes. How can it happens ? Which area of the brain involved in this phenomenon ? Maybe the man or girl can "see" his or her teachers, grandfather, university building from other country, etc when he or she closed his (her) eyes.
Is it also related to the dreams when someone sleep? Is it related to short term memory or (maybe) long term memory ? How is its connection to limbic system?
I recommend a reading of the "Handbook of Spatial Cognition." { http://www.apa.org/pubs/books/4318108.aspx } Your question can be directly answered by many of the chapters in that book, particularly chapter 3 "Spatial perception and action" by Fajen and Philips. Your query pertains to the concept of "perceptually directed action" (PDA) in spatial cognition research. Vision is vital but not mandatory for goal-oriented actions. Auditory, haptic, olfactory, proprioceptive, kinesthetic, and vestibular information all play important supplementary roles. Mental models/representations can be established based on the integration of information from non-visual sensory modalities in the absence of sight or visual cues.
Love this type of thought process - as light hitting the back of the eye giving us 'sight" is as complex as it can be!
Power of prayer & meditation calls for calm & quite mind under concentration so that we can establish inner urge & divinity within us to carry out our action of lifeline .
With our power of mind ,with our regular practice we may carry out our concentration with our close eyes & very often we see certain image which may establish a power of thinking process for understanding the norm of our prayer so that we may concentrate the image of divine master in our mind .
With this power of prayer & meditation in our silent surface of our mind keeps us certain experience of realization which may create with our close mind surrounding experience of visualization very often in silvery white image before our mind & if we have experience a realization in our prayer our visualization sometime reach to a far distance image which may also help us to understand the meaning ,the guideline of our spiritual norms .
This is my personal opinion
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