@article{CaoChenHaendel2020,
  author    = {Cao, Liyu and Chen, Xinyu and Haendel, Barbara F.},
  title     = {Overground Walking Decreases Alpha Activity and Entrains Eye Movements in Humans},
  series = {Frontiers in Human Neuroscience},
  volume    = {14},
  journal   = {Frontiers in Human Neuroscience},
  issn      = {1662-5161},
  doi       = {10.3389/fnhum.2020.561755},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-219872},
  year      = {2020},
  abstract  = {Experiments in animal models have shown that running increases neuronal activity in early visual areas in light as well as in darkness. This suggests that visual processing is influenced by locomotion independent of visual input. Combining mobile electroencephalography, motion- and eye-tracking, we investigated the influence of overground free walking on cortical alpha activity (~10 Hz) and eye movements in healthy humans. Alpha activity has been considered a valuable marker of inhibition of sensory processing and shown to negatively correlate with neuronal firing rates. We found that walking led to a decrease in alpha activity over occipital cortex compared to standing. This decrease was present during walking in darkness as well as during light. Importantly, eye movements could not explain the change in alpha activity. Nevertheless, we found that walking and eye related movements were linked. While the blink rate increased with increasing walking speed independent of light or darkness, saccade rate was only significantly linked to walking speed in the light. Pupil size, on the other hand, was larger during darkness than during light, but only showed a modulation by walking in darkness. Analyzing the effect of walking with respect to the stride cycle, we further found that blinks and saccades preferentially occurred during the double support phase of walking. Alpha power, as shown previously, was lower during the swing phase than during the double support phase. We however could exclude the possibility that the alpha modulation was introduced by a walking movement induced change in electrode impedance. Overall, our work indicates that the human visual system is influenced by the current locomotion state of the body. This influence affects eye movement pattern as well as neuronal activity in sensory areas and might form part of an implicit strategy to optimally extract sensory information during locomotion.},
  language  = {en}
}
@article{CaoSteinbornHaendel2021,
  author    = {Cao, Liyu and Steinborn, Michael B. and Haendel, Barbara F.},
  title     = {Delusional thinking and action binding in healthy individuals},
  series = {Scientific Reports},
  volume    = {11},
  journal   = {Scientific Reports},
  number    = {1},
  doi       = {10.1038/s41598-021-97977-y},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-264707},
  year      = {2021},
  abstract  = {Action binding is the effect that the perceived time of an action is shifted towards the action related feedback. A much larger action binding effect in schizophrenia compared to normal controls has been shown, which might be due to positive symptoms like delusions. Here we investigated the relationship between delusional thinking and action binding in healthy individuals, predicting a positive correlation between them. The action binding effect was evaluated by comparing the perceived time of a keypress between an operant (keypress triggering a sound) and a baseline condition (keypress alone), with a novel testing method that massively improved the precision of the subjective timing measurement. A positive correlation was found between the tendency of delusional thinking (measured by the 21-item Peters et al. delusions inventory) and action binding across participants after controlling for the effect of testing order between operant and baseline conditions. The results indicate that delusional thinking in particular influences action time perception and support the notion of a continuous distribution of schizotypal traits with normal controls at one end and clinical patients at the other end.},
  language  = {en}
}
@article{CaoSteinbornKundeetal.2020,
  author    = {Cao, Liyu and Steinborn, Michael and Kunde, Wilfried and Haendel, Barbara},
  title     = {Action force modulates action binding: evidence for a multisensory information integration explanation},
  series = {Experimental Brain Research},
  volume    = {238},
  journal   = {Experimental Brain Research},
  issn      = {0014-4819},
  doi       = {10.1007/s00221-020-05861-4},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-232534},
  pages     = {2019-2029},
  year      = {2020},
  abstract  = {Action binding refers to the observation that the perceived time of an action (e.g., a keypress) is shifted towards the distal sensory feedback (usually a sound) triggered by that action. Surprisingly, the role of somatosensory feedback for this phe-nomenon has been largely ignored. We fill this gap by showing that the somatosensory feedback, indexed by keypress peak force, is functional in judging keypress time. Specifically, the strength of somatosensory feedback is positively correlated with reported keypress time when the keypress is not associated with an auditory feedback and negatively correlated when the keypress triggers an auditory feedback. The result is consistent with the view that the reported keypress time is shaped by sensory information from different modalities. Moreover, individual differences in action binding can be explained by a sensory information weighting between somatosensory and auditory feedback. At the group level, increasing the strength of somatosensory feedback can decrease action binding to a level not being detected statistically. Therefore, a multisensory information integration account (between somatosensory and auditory inputs) explains action binding at both a group level and an individual level.},
  language  = {en}
}
@article{SchumannSteinbornKuertenetal.,
  author    = {Schumann, Frank and Steinborn, Michael B. and K{\"u}rten, Jens and Cao, Liyu and H{\"a}ndel, Barbara Friederike and Huestegge, Lynn},
  title     = {Restoration of attention by rest in a multitasking world: theory, methodology, and empirical evidence},
  series = {Frontiers in Psychology},
  volume    = {13},
  journal   = {Frontiers in Psychology},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2022.867978},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-267913},
  abstract  = {In this work, we evaluate the status of both theory and empirical evidence in the field of experimental rest-break research based on a framework that combines mental-chronometry and psychometric-measurement theory. To this end, we (1) provide a taxonomy of rest breaks according to which empirical studies can be classified (e.g., by differentiating between long, short, and micro-rest breaks based on context and temporal properties). Then, we (2) evaluate the theorizing in both the basic and applied fields of research and explain how popular concepts (e.g., ego depletion model, opportunity cost theory, attention restoration theory, action readiness, etc.) relate to each other in contemporary theoretical debates. Here, we highlight differences between all these models in the light of two symbolic categories, termed the resource-based and satiation-based model, including aspects related to the dynamics and the control (strategic or non-strategic) mechanisms at work. Based on a critical assessment of existing methodological and theoretical approaches, we finally (3) provide a set of guidelines for both theory building and future empirical approaches to the experimental study of rest breaks. We conclude that a psychometrically advanced and theoretically focused research of rest and recovery has the potential to finally provide a sound scientific basis to eventually mitigate the adverse effects of ever increasing task demands on performance and well-being in a multitasking world at work and leisure.},
  language  = {en}
}