shared ROC/CRF routines
shared ROC/CRF routine
identify movement artifact trials
plot R-value histograms for example fig

jack sessions 73 & 75, 55 & 56. good examples of how thresholds for
R-values are set, to exclude sessions with artifacts.
make local copy of jack's CTX strf files
SF & orientation tuning functions
misc updates
cross-correlation analysis
misc commits
additional input arg for horizontal Gabor session

4th input arg, session 342 in B & session 50 in J.
0: exclude session; 1: include session.
added catch statement

compiles list of errors in mat file, if any occur.