Distinct Patterns of Automatic and Controlled Incongruent Information Processing in the Human Brain

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Brain Networks

Background:

• Discriminating incongruent information is crucial for daily functioning.
• The neural mechanisms underlying incongruent information processing remain largely unknown.
• Understanding these dynamics is key to cognitive neuroscience.

Purpose of the Study:

• To investigate the neural dynamics of incongruent information processing using stereoelectroencephalography (SEEG).
• To differentiate the brain networks involved in processing relevant versus irrelevant incongruent information.
• To explore the role of intrinsic brain networks in cognitive control.

Main Methods:

• Utilized stereoelectroencephalography (SEEG) in patients with refractory epilepsy undergoing intracranial electrode implantation.
• Employed a delayed match-to-sample paradigm with sequential visual stimuli (S1, S2).
• Analyzed spatiotemporal cortical responses and compared conditions within intrinsic functional brain networks.

Main Results:

• Processing irrelevant incongruent information activated areas like the superior parietal lobule, supramarginal gyrus, and temporal gyri.
• Discriminating relevant incongruent information involved the middle frontal gyrus, superior temporal gyrus, and posterior cingulate cortex.
• Both automatic (irrelevant) and controlled (relevant) incongruence processing engaged the frontoparietal control network and default mode network.

Conclusions:

• Automatic detection of irrelevant incongruent information relies on local brain regions and limited networks.
• Controlled discrimination of relevant incongruent information requires extensive brain regions and broad network participation.
• Incongruent information processing involves complex interactions between distinct neural systems.