2. The relationship and interaction between the brain and the
heart
It is now generally accepted that there is a bidirectional interaction
between the brain and the heart, i.e., the function of the brain can
affect the function of the heart and vice versa [9]. The next
sections summarized the possible effects of the interaction between
these two organs on the cardiovascular system in COVID-19 patients,
analyzed from the perspective of the autonomic nervous system and
stroke.