Cerebral Cortex Advance Access published online on May 6, 2009
Cerebral Cortex, doi:10.1093/cercor/bhp085
Function-based Intersubject Alignment of Human Cortical Anatomy
1 Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA, 2 Computer Science and Artificial Intelligence Lab, Massachusetts Institute of Technology, Cambridge, MA 02138, USA, 3 Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA, 4 Department of Psychology, Princeton University, Princeton, NJ 08544, USA, 5 Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA, 6 Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH 03755, USA, 7 Department of Psychological & Brain Sciences, Dartmouth College, Hanover, NH 03755, USA
Address correspondence to James V. Haxby, PhD, Department of Psychological & Brain Sciences, Dartmouth College, Hanover, NH 03755, USA. Email: james.v.haxby{at}dartmouth.edu.
Making conclusions about the functional neuroanatomical organization of the human brain requires methods for relating the functional anatomy of an individual's brain to population variability. We have developed a method for aligning the functional neuroanatomy of individual brains based on the patterns of neural activity that are elicited by viewing a movie. Instead of basing alignment on functionally defined areas, whose location is defined as the center of mass or the local maximum response, the alignment is based on patterns of response as they are distributed spatially both within and across cortical areas. The method is implemented in the two-dimensional manifold of an inflated, spherical cortical surface. The method, although developed using movie data, generalizes successfully to data obtained with another cognitive activation paradigm—viewing static images of objects and faces—and improves group statistics in that experiment as measured by a standard general linear model (GLM) analysis.
Key Words: between-subject alignment fMRI human cortex neuroimaging
Mert R. Sabuncu and Benjamin D. Singer contributed equally to this work.