Diff for "MDsystem" - MRC CBU Imaging Wiki
location: Diff for "MDsystem"
Differences between revisions 15 and 16
Revision 15 as of 2012-09-11 09:35:28
Size: 1133
Comment:
Revision 16 as of 2012-09-11 09:35:57
Size: 1144
Comment:
Deletions are marked like this. Additions are marked like this.
Line 7: Line 7:
Fedorenko, E., Duncan, J., & Kanwisher, N. (in press). Language-selective and Domain-general Regions Lie Side by Side within Broca's Area. Current Biology. '''Fedorenko, E., Duncan, J., & Kanwisher, N. (in press). Language-selective and Domain-general Regions Lie Side by Side within Broca's Area. ''Current Biology''. '''

Functional brain imaging shows many specializations in the human brain. At the same time, it reveals something unexpected – a specific set of regions in the frontal and parietal cortex, active for many different kinds of cognitive demand. We call this multiple-demand or MD cortex. The network was originally defined using predominantly PET data:

[http://www.mrc-cbu.cam.ac.uk/bibliography/articles/4062/ [Duncan and Owen, 2000]] http://www.mrc-cbu.cam.ac.uk/bibliography/articles/6132/ Duncan, 2006

The definition of the MD system has been further refined using fMRI data from seven different tasks of varying demand, described in the publication:

Fedorenko, E., Duncan, J., & Kanwisher, N. (in press). Language-selective and Domain-general Regions Lie Side by Side within Broca's Area. Current Biology.

The full unthresholded volume can be downloaded in Nifti format from this link.]

The units are t-statistics from contrasts that isolate cogntive demand, averaged across the seven tasks. The figure below shows the main foci of the multiple demand system when this volume is thresholded at a value of t>1.5.

CbuImaging: MDsystem (last edited 2016-10-26 14:07:43 by DannyMitchell2)