Hallenbeck, G. E.; Tardiff, N.; Sprague, T. C.; Curtis, C. E.

The role the prefrontal cortex plays in working memory remains controversial. Here, we tested the hypothesis that the allocation of limited resources that support working memory is strategically controlled by a visual map in the human frontal cortex. Remarkably, transcranial magnetic stimulation of retinotopically-defined superior precentral sulcus disrupted the normal allocation of resources to memorized items based on their behavioral priority, thus providing causal support for this hypothesis.