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Moeck, R.

Publications and source records attributed to Moeck, R..

2 recordsLinked to original sources
bioRxiv2025

Neural correlates of consciousness in an auditory no-report fMRI study

In the search for neural correlates of consciousness (NCC), prominent theories disagree about the role of sensory versus wide-spread fronto-parietal brain activity. Research on auditory awareness has been widely neglected, and isolating NCC from correlates of task-related post-perceptual processes (e.g., report) is an ongoing challenge. The present study addressed these issues using functional magnetic resonance imaging (fMRI) during a no-report inattentional deafness paradigm. Sixty-three participants performed an auditory distractor task while supra-threshold but task-irrelevant sounds were presented in the background. Whereas one group was aware of these stimuli, another group remained unaware. Comparing brain responses to the critical sounds between aware and unaware participants while controlling for correlates of sensory and postperceptual processing revealed that auditory awareness was associated with significantly increased activity in secondary auditory but not in fronto-parietal areas. These findings suggest a dominant role of stimulus-specific sensory processing rather than widespread fronto-parietal information broadcasting in conscious perception.

neuroscience↗
bioRxiv2020

Differential effects of prediction and adaptation along the cortical hierarchy during deviance processing

Neural mismatch responses have been proposed to rely on different mechanisms, including prediction error-related activity and adaptation to frequent stimuli. However, the cortical hierarchical structure of these mechanisms is unknown. To investigate this question, we used functional magnetic resonance imaging (fMRI) and an auditory oddball design with a suited control condition that enabled us to delineate the contributions of prediction error- or adaptation-related brain activation during deviance processing. We found that while prediction-error related processes increased with the hierarchical position of the brain area, adaptation declined. This suggests that the relative contribution of different mechanisms in deviance processing varies across the cortical hierarchy.

neuroscience↗