autonomic
au.to.nom.ic \.o.t-*-'na:m-ik\ \-i-k(*-)le-\ aj 1a: acting independently of
volition {~ reflexes} 1b: relating to, affecting, or controlled by the
autonomic nervous system 2: due to internal causes or influences :
SPONTANEOUS - au.to.nom.i.cal.ly av
Webster's English Dictionary