Parallel cognitive processing streams in human prefrontal cortex: Parsing areal-level brain network for response inhibition

Cell Rep. 2021 Sep 21;36(12):109732. doi: 10.1016/j.celrep.2021.109732.

Abstract

Multiple cognitive processes are recruited to achieve adaptive behavior. However, it is poorly understood how such cognitive processes are implemented in temporal cascades of human cerebral cortical areas as processing streams to achieve behavior. In the present study, we identify cortical processing streams for response inhibition and examine relationships among the processing streams. Functional magnetic resonance imaging (MRI) and time-resolved single-pulse transcranial magnetic stimulation (TMS) reveal three distinct critical timings of transient disruption in the functionally essential cortical areas that belong to two distinct cerebrocortical networks. Furthermore, single-pulse TMS following suppression of the ventral posterior inferior frontal cortex (vpIFC) with repetitive TMS reveals information flow from the vpIFC to the presupplementary motor area (preSMA) within the same network but not to the dorsal posterior inferior frontal cortex (dpIFC) across different networks. These causal behavioral effects suggest two parallel processing streams (vpIFC-preSMA versus dpIFC-intraparietal sulcus) that act concurrently during response inhibition.

Keywords: areal parcellation response inhibition; cerebrocortical network; fMRI; frontal cortex; neuroimaging; noninvasive brain stimulation; stop-signal task; transcranial magnetic stimulation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Brain / physiology*
  • Brain Mapping
  • Cognition / physiology*
  • Female
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Motor Cortex / physiology
  • Neural Pathways / physiology
  • Parietal Lobe / physiology
  • Prefrontal Cortex / physiology*
  • Reaction Time
  • Transcranial Magnetic Stimulation
  • Young Adult