 In support of this, general theories of attention actively assume bottom-up (reflexive) processes and top-down (voluntary) processes converge on a common neural architecture, in that they control both covert and overt attentional systems.For example, if individuals attend to the right hand corner field of view, movement of the eyes in that direction may have to be actively suppressed.Orienting attention is vital and can be controlled through external (exogenous) or internal (endogenous) processes.