Freesurfer users who are interested in viewing the location of MNI and
Talairach coordinates on the cortical surface or in 3D may be interested
in visiting the "Martinez Flat-Mapper" site at
http://www.ebire.org/hcnlab/cortical-mapping.
Entering MNI or Talairach coordinates will display them on the cortical
surface in relation to average gyral anatomy and in a representative 3D
brain (Colin).
The cortical surface maps are averages of the left and right hemispheres
of 40 subjects as viewed with equal area projections that can be centered
on temporal, occipital, or frontal lobes. Three different map types
are available: cortical curvature, thickness, and fiber directionality
(derived from the anisotropic water diffusion). There is also a
high-resolution map of average auditory cortex curvature extracted using
local landmark techniques.
Clicking on a location on any map will display the MNI and Talairach
coordinates of the point and show its location in 3D space in the Colin
brain. Conversely, clicking on any location in the Colin brain will
display that point on the cortical surface maps and provide an estimate
of its distance to the gray/white boundary.
David L. Woods, Professor of Neurology, Dept. of Neurology,UC Davis,
Chief, Clinical Neurophysiology and Chief, Research fMRI imaging,
Neurology Service (127E), Building R4, VANCHCS, 150 Muir Rd., Martinez,
CA 94553
Tel (925) 372-2571, Fax (925) 229-2315 Email:dlwoods@ucdavis.edu
Website:
http://marva4.ebire.org/hcnlab