Are thoughts physical or abstract?
When we have a thought, electrical and chemical signals called neurons are sent and received in different areas of the brain. These signals communicate information and allow different brain regions to work together to process and interpret the thought. The exact process of how a thought is generated and how it is represented in the brain is still not fully understood by scientists.
who knows? we don’t even know 8f thoughts are entirely only inside our brain
when we feel observed where does sensation come from?
We don’t have any great hypotheses on this matter. It’s one of the fields which could probably most use a revolutionary paradigm shift in the future.