Testing the role of the posterior cingulate cortex in processing salient stimuli in cannabis users: an rTMS study.

ABSTRACT: The posterior cingulate cortex (PCC) and precuneus are hubs in the default mode network and play a role in processing external salient stimuli. Accordingly, activation in these regions has been associated with response to salient stimuli using drug cue-reactivity paradigms in substance using populations. These studies suggest that the PCC and precuneus may underlie deficits in processing salient stimuli that contribute toward the development of substance use disorders. The goal of this study was to directly test this hypothesis using repetitive transcranial magnetic stimulation (rTMS). Using a double-blind, placebo-controlled design, we used rTMS to target the PCC and precuneus with a double-cone coil at 10 Hz (high frequency) and 1 Hz (low frequency) in 10 adult cannabis users and 10 age-

SUBMITTER: Prashad S 

PROVIDER: S-EPMC6767056 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature