AUTHOR=Pollmann Stefan , Manginelli Angela A. TITLE=Anterior prefrontal involvement in implicit contextual change detection JOURNAL=Frontiers in Human Neuroscience VOLUME=Volume 3 - 2009 YEAR=2009 URL=https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/neuro.09.028.2009 DOI=10.3389/neuro.09.028.2009 ISSN=1662-5161 ABSTRACT=

Anterior prefrontal cortex is usually associated with high level executive functions. Here, we show that the frontal pole, specifically left lateral frontopolar cortex, is involved in signaling change in implicitly learned spatial contexts, in the absence of conscious change detection. In a variant of the contextual cueing paradigm, participants first learned contingencies between distractor contexts and target locations implicitly. After learning, repeated distractor contexts were paired with new target locations. Left lateral frontopolar [Brodmann area (BA) 10] and superior frontal (BA9) cortices showed selective signal increase for this target location change in repeated displays in an event-related fMRI experiment, which was most pronounced in participants with high contextual facilitation before the change. The data support the view that left lateral frontopolar cortex is involved in signaling contextual change to posterior brain areas as a precondition for adaptive changes of attentional resource allocation. This signaling occurs in the absence of awareness of learned contingencies or contextual change.