@article{MichałowskiWiwatowskaWeymar2020,
  author    = {Michałowski, Jarosław M. and Wiwatowska, Ewa and Weymar, Mathias},
  title     = {Brain potentials reveal reduced attention and error-processing during a monetary Go/No-Go task in procrastination},
  series = {Scientific reports},
  volume    = {10},
  journal   = {Scientific reports},
  number    = {1},
  publisher = {Macmillan Publishers Limited, part of Springer Nature},
  address   = {London},
  issn      = {2045-2322},
  doi       = {10.1038/s41598-020-75311-2},
  pages     = {12},
  year      = {2020},
  abstract  = {Procrastination is a self-regulatory problem of voluntarily and destructively delaying intended and necessary or personally important tasks. Previous studies showed that procrastination is associated with executive dysfunctions that seem to be particularly strong in punishing contexts. In the present event-related potential (ERP) study a monetary version of the parametric Go/No-Go task was performed by high and low academic procrastinators to verify the influence of motivational context (reward vs. punishment expectation) and task difficulty (easy vs. hard) on procrastination-related executive dysfunctions. The results revealed increased post-error slowing along with reduced P300 and error-related negativity (ERN) amplitudes in high (vs. low) procrastination participants-effects that indicate impaired attention and error-related processing in this group. This pattern of results did not differ as a function of task difficulty and motivation condition. However, when the task got more difficult executive attention deficits became even more apparent at the behavioral level in high procrastinators, as indexed by increased reaction time variability. The findings substantiate prior preliminary evidence that procrastinators show difficulties in certain aspects of executive functioning (in attention and error processing) during execution of task-relevant behavior, which may be more apparent in highly demanding situations.},
  language  = {en}
}
@article{FischerVenturaBortHammetal.2018,
  author    = {Fischer, Rico and Ventura-Bort, Carlos and Hamm, Alfons O. and Weymar, Mathias},
  title     = {Transcutaneous vagus nerve stimulation (tVNS) enhances conflict-triggered adjustment of cognitive control},
  series = {Cognitive, affective, \& behavioral neuroscience : a journal of the Psychonomic Society},
  volume    = {18},
  journal   = {Cognitive, affective, \& behavioral neuroscience : a journal of the Psychonomic Society},
  number    = {4},
  publisher = {Springer},
  address   = {New York},
  issn      = {1530-7026},
  doi       = {10.3758/s13415-018-0596-2},
  pages     = {680 -- 693},
  year      = {2018},
  abstract  = {Response conflicts play a prominent role in the flexible adaptation of behavior as they represent context-signals that indicate the necessity for the recruitment of cognitive control. Previous studies have highlighted the functional roles of the affectively aversive and arousing quality of the conflict signal in triggering the adaptation process. To further test this potential link with arousal, participants performed a response conflict task in two separate sessions with either transcutaneous vagus nerve stimulation (tVNS), which is assumed to activate the locus coeruleus-noradrenaline (LC-NE) system, or with neutral sham stimulation. In both sessions the N2 and P3 event-related potentials (ERP) were assessed. In line with previous findings, conflict interference, the N2 and P3 amplitude were reduced after conflict. Most importantly, this adaptation to conflict was enhanced under tVNS compared to sham stimulation for conflict interference and the N2 amplitude. No effect of tVNS on the P3 component was found. These findings suggest that tVNS increases behavioral and electrophysiological markers of adaptation to conflict. Results are discussed in the context of the potentially underlying LC-NE and other neuromodulatory (e.g., GABA) systems. The present findings add important pieces to the understanding of the neurophysiological mechanisms of conflict-triggered adjustment of cognitive control.},
  language  = {en}
}
@article{WolffSchindlerEnglertetal.2016,
  author    = {Wolff, Wanja and Schindler, Sebastian and Englert, Christoph and Brand, Ralf and Kissler, Johanna},
  title     = {Uninstructed BIAT faking when ego depleted or in normal state: differential effect on brain and behavior},
  series = {BMC neuroscience},
  volume    = {17},
  journal   = {BMC neuroscience},
  publisher = {BioMed Central},
  address   = {London},
  issn      = {1471-2202},
  doi       = {10.1186/s12868-016-0249-8},
  pages     = {12},
  year      = {2016},
  abstract  = {Background: Deception can distort psychological tests on socially sensitive topics. Understanding the cerebral processes that are involved in such faking can be useful in detection and prevention of deception. Previous research shows that faking a brief implicit association test (BIAT) evokes a characteristic ERP response. It is not yet known whether temporarily available self-control resources moderate this response. We randomly assigned 22 participants (15 females, 24.23 +/- 2.91 years old) to a counterbalanced repeated-measurements design. Participants first completed a Brief-IAT (BIAT) on doping attitudes as a baseline measure and were then instructed to fake a negative doping attitude both when self-control resources were depleted and non-depleted. Cerebral activity during BIAT performance was assessed using high-density EEG. Conclusions: Results indicate that temporarily available self-control resources do not affect overt faking success on a BIAT. However, differences were found on an electrophysiological level. This indicates that while on a phenotypical level self-control resources play a negligible role in deliberate test faking the underlying cerebral processes are markedly different.},
  language  = {en}
}
@article{AdamoBaumeisterHohmannetal.2015,
  author    = {Adamo, Nicoletta and Baumeister, Sarah and Hohmann, Sarah and Wolf, Isabella and Holz, Nathalie and Boecker-Schlier, Regina and Laucht, Manfred and Banaschewski, Tobias and Brandeis, Daniel},
  title     = {Frequency-specific coupling between trial-to-trial fluctuations of neural responses and response-time variability},
  series = {Journal of neural transmission},
  volume    = {122},
  journal   = {Journal of neural transmission},
  number    = {8},
  publisher = {Springer},
  address   = {Wien},
  issn      = {0300-9564},
  doi       = {10.1007/s00702-015-1382-8},
  pages     = {1197 -- 1202},
  year      = {2015},
  abstract  = {We assessed intra-individual variability of response times (RT) and single-trial P3 amplitudes following targets in healthy adults during a Flanker/NO-GO task. RT variability and variability of the neural responses coupled at the faster frequencies examined (0.07-0.17 Hz) at Pz, the target-P3 maxima, despite non-significant associations for overall variability (standard deviation, SD). Frequency-specific patterns of variability in the single-trial P3 may help to understand the neurophysiology of RT variability and its explanatory models of attention allocation deficits beyond intra-individual variability summary indices such as SD.},
  language  = {en}
}
@article{KizilirmakRoeslerKhader2012,
  author    = {Kizilirmak, J. M. and R{\"o}sler, Frank and Khader, P. H.},
  title     = {Control processes during selective long-term memory retrieval},
  series = {NeuroImage : a journal of brain function},
  volume    = {59},
  journal   = {NeuroImage : a journal of brain function},
  number    = {2},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {1053-8119},
  doi       = {10.1016/j.neuroimage.2011.08.041},
  pages     = {1830 -- 1841},
  year      = {2012},
  abstract  = {In our daily life, we often need to selectively remember information related to the same retrieval cue in a consecutive manner (e.g., ingredients from a recipe). To investigate such selection processes during cued long-term memory (LTM) retrieval, we used a paradigm in which the retrieval demands were systematically varied from trial to trial and analyzed, by means of behavior and slow cortical EEG potentials (SCPs), the retrieval processes in the current trial depending on those of the previous trial. We varied whether the retrieval cue, the type of to-be-retrieved association (feature), or retrieval load was repeated or changed from trial to trial. The behavioral data revealed a benefit of feature repetition, probably due to trial-by-trial feature priming. SCPs further showed an effect of cue change with a mid-frontal maximum, suggesting increased control demands when the cue was repeated, as well as a parietal effect of retrieval-load change, indicating increased activation of posterior neural resources when focusing on a single association after all learned associations had been activated previously, compared to staying with single associations across trials. These effects suggest the existence of two distinct types of dynamic (trial-by-trial) control processes during LTM retrieval: (1) medial frontal processes that monitor or regulate interference within a set of activated associations, and (2) posterior processes regulating attention to LTM representations. The present study demonstrates that processes mediating selective LTM retrieval can be successfully studied by manipulating the history of processing demands in trial sequences.},
  language  = {en}
}