Assessing the origin of human alpha oscillations using laminar layer 7T fMRI-EEG

13/08/2020: 15:50  - 16:35 
1345 
Oral 
Room: Thursday Parallel 4 
EEG alpha (8-13Hz) oscillations occur throughout the cortex but the generating mechanisms are poorly understood. Opinion is divided between alpha being driven by bottom-up, top-down or both these processes. Here we use simultaneous 7T-fMRI-EEG during periods of eyes open/closed to assess the generator of alpha by determining the strongest BOLD-alpha negative layer correlations. We show the feasibility of using high spatial resolution 7T-fMRI with EEG to understand the origin of oscillations. Preliminary analysis shows BOLD-alpha correlations peak in middle layers of V1 (but not in V2/V3) providing suggestion that the alpha oscillations investigated are driven by bottom-up processing.

Author String

Daniel Marsh, Rodika Sokoliuk, Kevin Aquino, Daisie Pakenham, Ross Wilson, Rosa Sanchez Panchuelo, Matthew Brookes, Simon Hanslmayr, Stephen Mayhew, Susan Francis, Karen Mullinger 

Institution String

University of Nottingham, University of Birmingham, University of Nottingham, Monash University, University of Nottingham, University of Birmingham, University of Nottingham, University of Nottingham, University of Birmingham, University of Birmingham, University of Nottingham, University of Nottingham, University of Birmingham 

Speaker

Mr Daniel Marsh, University of Nottingham