The chronometry of risk processing in the human cortex
Mkael Symmonds, Rosalyn J Moran, Nicholas D Wright, Peter Bossaerts, Gareth Barnes, Raymond J Dolan
Frontiers in Neuroscience | FRONTIERS MEDIA SA | Published : 2013
The neuroscience of human decision-making has focused on localizing brain activity correlating with decision variables and choice, most commonly using functional MRI (fMRI). Poor temporal resolution means these studies are agnostic in relation to how decisions unfold in time. Consequently, here we address the temporal evolution of neural activity related to encoding of risk using magnetoencephalography (MEG), and show modulations of electromagnetic power in posterior parietal and dorsomedial prefrontal cortex (DMPFC) which scale with both variance and skewness in a lottery, detectable within 500 ms following stimulus presentation. Electromagnetic responses in somatosensory cortex following t..View full abstract
Awarded by Wellcome Trust
Awarded by Academy of Medical Sciences (AMS)
This work was supported by the Wellcome Trust [Raymond J. Dolan Senior Investigator Award 098362/Z/12/Z]. The Wellcome Trust Centre for Neuroimaging is supported by core funding from the Wellcome Trust 091593/Z/10/Z. Rosalyn Moran is supported by an award from the Max Planck Society to Raymond J. Dolan; Nicholas D. Wright is supported by a Wellcome Trust Clinical Research Fellowship.