Université de Fribourg

Benchmarking nonparametric Granger causality: Robustness against downsampling and influence of spectral decomposition parameters

Pagnotta, Mattia F. ; Dhamala, Mukesh ; Plomp, Gijs

In: NeuroImage, 2018, vol. 183, p. 478-494

Brain function arises from networks of distributed brain areas whose directed interactions vary at subsecond time scales. To investigate such interactions, functional directed connectivity methods based on nonparametric spectral factorization are promising tools, because they can be straightforwardly extended to the nonstationary case using wavelet transforms or multitapers on sliding time...

Université de Fribourg

Neural correlates of experimental trauma memory retrieval

Gvozdanovic, Geraldine A. ; Stämpfli, Philipp ; Seifritz, Erich ; Rasch, Björn

In: Human Brain Mapping, 2017, vol. 38, p. 3592-3602

Traumatic memories such as intrusions and flashbacks play a major role in the development and maintenance of post‐traumatic stress disorder (PTSD). A thorough understanding of the neural mechanisms underlying traumatic memories is indispensable for precise diagnosis, for personalized treatment and prevention. In particular, the identification of early neural predictor variables for intrusion...