Browsing by Author "Witzel, Thomas"

Now showing items 1-3 of 3

    • Differences in cortical response to acupressure and electroacupuncture stimuli 

      Witzel, Thomas; Napadow, Vitaly J.; Kettner, Norman W; Vangel, Mark G.; Hamalainen, Matti S.; Dhond, Rupali P (Springer Nature, 2011)
      Background FMRI studies focus on sub-cortical effects of acupuncture stimuli. The purpose of this study was to assess changes in primary somatosensory (S1) activity over the course of different types of acupuncture ...

    • Increasing fMRI Sampling Rate Improves Granger Causality Estimates 

      Lin, Fa-Hsuan; Ahveninen, Jyrki; Raij, Tommi; Witzel, Thomas; Chu, Ying-Hua; Jääskeläinen, Iiro P.; Tsai, Kevin Wen-Kai; Kuo, Wen-Jui; Belliveau, John W. (Public Library of Science, 2014)
      Estimation of causal interactions between brain areas is necessary for elucidating large-scale functional brain networks underlying behavior and cognition. Granger causality analysis of time series data can quantitatively ...

    • Spatio-temporal dynamics and laterality effects of face inversion, feature presence and configuration, and face outline 

      Marinkovic, Ksenija; Courtney, Maureen G.; Witzel, Thomas; Dale, Anders M.; Halgren, Eric (Frontiers Media S.A., 2014)
      Although a crucial role of the fusiform gyrus (FG) in face processing has been demonstrated with a variety of methods, converging evidence suggests that face processing involves an interactive and overlapping processing ...