Sensations arising from internal organs like the heart can affect how the brain decides between two mutually incompatible perceptions of the same visual stimulus.
Amanda C Perofsky, John Huddleston ... Cécile Viboud
Antigenic drift in influenza’s major surface proteins, hemagglutinin and neuraminidase, contributes to variability in epidemic magnitude across seasons but is less influential than subtype interference in shaping annual outbreaks.