¹⁹In human neuroimaging literature, the existence of a central executive network is more or less accepted by many authors (Koechlin and Summerfield, 2007; Sridharan et al., 2008; Botvinick and Cohen, 2014; Marek and Dosenbach, 2018). The functions attributed to the central executive may vary, and many authors indeed talk about a number of “(central) executive functions” without claiming that they are performed by a single entity, whether brain region or network, as discussed by Miyake et al. (2000); Diamond (2013). For this book, the main executive function discussed is the control of actions and thoughts, as treated in the following sections; inhibition of “impulses” and automatic behaviour such as interrupts is a fundamental instance. (See Teper and Inzlicht (2013) for a discussion on how the related “self-control” could be improved by meditation.)