Markus Ullsperger

This paper uses transcranial ultrasound stimulation to modulate conflict monitoring dynamics in the anterior midcingulate cortex, improving cognitive control performance with transient effects.

The paper investigates ERP components related to trust in human vs. autonomous systems, finding an absent P3a component in system monitoring, suggesting reduced frontal attention.

This study shows that sleep deprivation reduces error awareness and impairs post-error behavioral adjustments, driven by subjective rather than objective error evaluation.

This study examines how methamphetamine affects learning rate dynamics in probabilistic reversal learning, showing it enhances learning flexibility more in individuals with lower baseline performance.

This study shows that biperiden impairs motor sequence learning by disrupting theta, alpha, and beta oscillations in the motor network.

This study investigates whether midfrontal theta and brain activity in aMCC/preSMA reflect proactive or reactive cognitive control mechanisms beyond response time effects in conflict tasks.

The paper uses meta-analytic evidence to show brain regions involved in error processing versus successful response in cognitive control tasks.

The paper shows that a drift diffusion model with collapsing decision thresholds better captures time-dependent decision policies than fixed threshold models, supported by EEG beta power lateralization analysis.

The paper investigates how EEG dynamics reflect decision biases and future choices during learning from unexpected events in a probabilistic choice task.

This study investigates trial-by-trial coupling between theta power and BOLD signals during conflict tasks, revealing distinct relationships in brain regions associated with conflict and error processing.