“…However, such studies have been particularly enlightening in archaeological contexts (Wilson, 2005). Chemical analysis of hair from mummies from the area around Arica in Northern Chile has shown intake of cocaine, most likely from coca leaves (Cartmell et al, 1991a,b;Springfield et al, 1993;Rivera et al, 2005), while a similar study from the same general geographic area suggested the consumption of harmine (Ogalde et al, 2009; but see Trout, 2008), an alkaloid and monoaminooxidase inhibitor (MAO-I) present in the vine Banisteriopsis sp. (Malpighiaceae).…”