Corrigendum: Top-down and bottom-up control in the Galápagos Upwelling System

Top-down control and bottom-up priming

The present study explored the mechanisms involved in the contingent capture phenomenon using a variant of the classic precueing paradigm of Folk et al. (1992). Rather than keeping the target fixed over a whole block of trials (as traditionally done with contingent capture experiments), we encouraged participants to adopt a top-down set before each trial. If top-down attentional set determines ...

Bottom-up, top-down

Bottom-up and top-down control in visual search.

Previous research suggests that the allocation of attention is largely controlled either in a stimulus-driven or in a goal-driven manner. To date, few studies have systematically manipulated variables affecting stimulus-driven and goal-driven selection independently in order to investigate how both manners of control interrelate and affect performance in visual search. In the present study obse...

Bottom-Up Beats Top-Down

In PEPA, the calculation of the transitions enabled by a process accounts for a large part of the time for the state space exploration of the underlying Markov chain. Unlike other approaches based on recursion, we present a new technique that is iterative—it traverses the process’ binary tree from the sequential components at the leaves up to the root. Empirical results shows that this algorith...

Top-down and bottom-up control of visual selection.

The present paper argues for the notion that when attention is spread across the visual field in the first sweep of information through the brain visual selection is completely stimulus-driven. Only later in time, through recurrent feedback processing, volitional control based on expectancy and goal set will bias visual selection in a top-down manner. Here we review behavioral evidence as well ...