@article{GramAlbertovaSchirmeretal.2022,
  author    = {Gram, Maximilian and Albertova, P. and Schirmer, V. and Blaimer, M. and Gamer, M. and Herrmann, M. J. and Nordbeck, P. and Jakob, P. M.},
  title     = {Towards robust in vivo quantification of oscillating biomagnetic fields using Rotary Excitation based MRI},
  series = {Scientific Reports},
  volume    = {12},
  journal   = {Scientific Reports},
  number    = {1},
  doi       = {10.1038/s41598-022-19275-5},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-300862},
  year      = {2022},
  abstract  = {Spin-lock based functional magnetic resonance imaging (fMRI) has the potential for direct spatially-resolved detection of neuronal activity and thus may represent an important step for basic research in neuroscience. In this work, the corresponding fundamental effect of Rotary EXcitation (REX) is investigated both in simulations as well as in phantom and in vivo experiments. An empirical law for predicting optimal spin-lock pulse durations for maximum magnetic field sensitivity was found. Experimental conditions were established that allow robust detection of ultra-weak magnetic field oscillations with simultaneous compensation of static field inhomogeneities. Furthermore, this work presents a novel concept for the emulation of brain activity utilizing the built-in MRI gradient system, which allows REX sequences to be validated in vivo under controlled and reproducible conditions. Via transmission of Rotary EXcitation (tREX), we successfully detected magnetic field oscillations in the lower nano-Tesla range in brain tissue. Moreover, tREX paves the way for the quantification of biomagnetic fields.},
  language  = {en}
}
@article{BerlijnHildebrandtGamer2022,
  author    = {Berlijn, Adam M. and Hildebrandt, Lea K. and Gamer, Matthias},
  title     = {Idiosyncratic viewing patterns of social scenes reflect individual preferences},
  series = {Journal of Vision},
  volume    = {22},
  journal   = {Journal of Vision},
  number    = {13},
  doi       = {10.1167/jov.22.13.10},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-301029},
  year      = {2022},
  abstract  = {In general, humans preferentially look at conspecifics in naturalistic images. However, such group-based effects might conceal systematic individual differences concerning the preference for social information. Here, we investigated to what degree fixations on social features occur consistently within observers and whether this preference generalizes to other measures of social prioritization in the laboratory as well as the real world. Participants carried out a free viewing task, a relevance taps task that required them to actively select image regions that are crucial for understanding a given scene, and they were asked to freely take photographs outside the laboratory that were later classified regarding their social content. We observed stable individual differences in the fixation and active selection of human heads and faces that were correlated across tasks and partly predicted the social content of self-taken photographs. Such relationship was not observed for human bodies indicating that different social elements need to be dissociated. These findings suggest that idiosyncrasies in the visual exploration and interpretation of social features exist and predict real-world behavior. Future studies should further characterize these preferences and elucidate how they shape perception and interpretation of social contexts in healthy participants and patients with mental disorders that affect social functioning.},
  language  = {en}
}
@article{StoeckelEsserGameretal.2016,
  author    = {Stoeckel, M. Cornelia and Esser, Roland W. and Gamer, Matthias and B{\"u}chel, Christian and von Leupoldt, Andreas},
  title     = {Brain Responses during the Anticipation of Dyspnea},
  series = {Neural Plasticity},
  volume    = {2016},
  journal   = {Neural Plasticity},
  number    = {6434987},
  doi       = {10.1155/2016/6434987},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-166238},
  year      = {2016},
  abstract  = {Dyspnea is common in many cardiorespiratory diseases. Already the anticipation of this aversive symptom elicits fear in many patients resulting in unfavorable health behaviors such as activity avoidance and sedentary lifestyle. This study investigated brain mechanisms underlying these anticipatory processes. We induced dyspnea using resistive-load breathing in healthy subjects during functional magnetic resonance imaging. Blocks of severe and mild dyspnea alternated, each preceded by anticipation periods. Severe dyspnea activated a network of sensorimotor, cerebellar, and limbic areas. The left insular, parietal opercular, and cerebellar cortices showed increased activation already during dyspnea anticipation. Left insular and parietal opercular cortex showed increased connectivity with right insular and anterior cingulate cortex when severe dyspnea was anticipated, while the cerebellum showed increased connectivity with the amygdala. Notably, insular activation during dyspnea perception was positively correlated with midbrain activation during anticipation. Moreover, anticipatory fear was positively correlated with anticipatory activation in right insular and anterior cingulate cortex. The results demonstrate that dyspnea anticipation activates brain areas involved in dyspnea perception. The involvement of emotion-related areas such as insula, anterior cingulate cortex, and amygdala during dyspnea anticipation most likely reflects anticipatory fear and might underlie the development of unfavorable health behaviors in patients suffering from dyspnea.},
  language  = {en}
}