Though I have little knowledge in the arena of Psychology, I am trying to ventilate my perspective of limits of consciousness as requested by the curious researcher.

Truly, complexity of structure and functions of human brain is explicitly manifested in the way we think, observe and act.

As a student of Zoology, I perceive three states of mind often elaborated as conscious, subconscious and unconscious. Needless to say, our senses help us feel and respond adequately and appropriately in conscious mental state. Unquestionably we are capable of planning and executing activities of life with receptive and cool mind during our conciousness. I personally feel that our mental perception and power slows down during subconscious state of mind. on return to conscious mental state, faint memories of latent mental episodes of subconscious mind may or may not be retained on gaining conciousness.Further, unconciousness could be described as a state of zero perception.Patients in coma probably represent subconscious or unconscious mental state and have chances of reversal. Age-induced loss of cognitive deficits eventually lead to serious psychosomatic implications adding to old age miseries.

The ongoing discussion also makes it imperative to take into account parapsychological and metaphysical instances and beliefs in the given context of limits of consciousness for comprehensive outlook

Thank you for your response. Human consciousness has a complex structure, introducing multilayer cognitive spheres, and neurologically challenging dimensions. The unconscious state includes no perceptions. However, in some cases, one can be theoretically conscious, being able to perceive the surrounding world, but in a way that doesn't fully reflect the objective reality, which can be another form of unconsciousness. Human consciousness is limited by subjective interpretations of reality, psycho-social understandings and influences, as well as by one's academic and professional background.