http://cfn.upenn.edu/aguirre/wiki/ 2009-11-22T20:53:28-05:00 http://cfn.upenn.edu/aguirre/wiki/ http://cfn.upenn.edu/aguirre/wiki/lib/images/favicon.ico text/html 2009-11-19T11:45:06-05:00 Geoffrey Aguirre http://cfn.upenn.edu/aguirre/wiki/public:useful_shell_and_perl_commands?rev=1258649106&do=diff An easier way to search and replace in UNIX with perl (taken from <http://www.shooter.net/index.php/weblog/Item/an-easier-way-to-search-and-replace-in-unix-with-perl/>) perl -pi -e 's/search/replace/g' *.text Here's a breakdown of how that command works: text/html 2009-11-19T10:00:20-05:00 Geoffrey Aguirre http://cfn.upenn.edu/aguirre/wiki/lab_publications?rev=1258642820&do=diff * GKAguirre Lab Front Page * Wiki Front Page Face and Object Perception * DM Drucker, WT Kerr, GK Aguirre. (2009) Distinguishing conjoint and independent neural tuning for stimulus features with fMRI adaptation. Journal of Neurophysiology. June;101(6):3310-24 * [ Link to supplementary materials ] * [ Link to Faculty of 1000 evaluation ] * [ Cached version of F1000 review ] * [ Example data set ] text/html 2009-11-17T17:41:36-05:00 Geoffrey Aguirre http://cfn.upenn.edu/aguirre/wiki/private:pulse-oximetry_during_fmri_scanning?rev=1258497696&do=diff Rationale Cardio-pulmonary activity is a source of noise in the BOLD fMRI signal. Physiologic recording obtained at the time of scanning may be used to create covariates to model and remove this noise. A recent poster presented by Timothy Verstynen (<timothyv@gmail.com>) at Human Brain Mapping 2009 describes in detail the rationale for pulse-ox regression: text/html 2009-11-10T14:20:28-05:00 Sashank Prasad http://cfn.upenn.edu/aguirre/wiki/public:perfusion_analysis?rev=1257880828&do=diff Globals '$' - indicates shell commands 'dir' - refers to the directory where the study data is found (ex. /jet/aguirre/CrossModal) 'new subject' - the subject you are currently analyzing (ex. X111111X) 'old subject' - a subject that has been analyzed previously (ex. X000000X)