diff --git a/pointprocesses/code/isiHist.m b/pointprocesses/code/isihist.m
similarity index 75%
rename from pointprocesses/code/isiHist.m
rename to pointprocesses/code/isihist.m
index 4f28f32..33ad4f5 100644
--- a/pointprocesses/code/isiHist.m
+++ b/pointprocesses/code/isihist.m
@@ -1,7 +1,7 @@
-function [pdf, centers] = isiHist(isis, binwidth)
+function [pdf, centers] = isihist(isis, binwidth)
 % Compute normalized histogram of interspike intervals.
 %
-% [pdf, centers] = isiHist(isis, binwidth)
+% [pdf, centers] = isihist(isis, binwidth)
 %
 % Arguments:
 %   isis: vector of interspike intervals in seconds
@@ -14,15 +14,15 @@ function [pdf, centers] = isiHist(isis, binwidth)
     if nargin < 2
         % compute good binwidth:
         nperbin = 200;        % average number of data points per bin
-        bins = length( isis )/nperbin; % number of bins
-        binwidth = max( isis )/bins;
+        bins = length(isis)/nperbin;   % number of bins
+        binwidth = max(isis)/bins;
         if binwidth < 5e-4             % half a millisecond
             binwidth = 5e-4;
         end
     end
     bins = 0.5*binwidth:binwidth:max(isis);
     % histogram data:
-    [ nelements, centers ] = hist(isis, bins);
+    [nelements, centers] = hist(isis, bins);
     % normalization (integral = 1):
     pdf = nelements / sum(nelements) / binwidth;
 end
diff --git a/pointprocesses/code/isis.m b/pointprocesses/code/isis.m
index b927abd..65a346b 100644
--- a/pointprocesses/code/isis.m
+++ b/pointprocesses/code/isis.m
@@ -1,7 +1,7 @@
-function isivec = isis( spikes )
+function isivec = isis(spikes)
 % returns a single list of isis computed from all trials in spikes
 %
-% isivec = isis( spikes )
+% isivec = isis(spikes)
 %
 % Arguments:
 %   spikes: a cell array of vectors of spike times in seconds
@@ -12,9 +12,9 @@ function isivec = isis( spikes )
 
     isivec = [];
     for k = 1:length(spikes)
-        difftimes = diff( spikes{k} );
+        difftimes = diff(spikes{k});
         % difftimes(:) ensures a column vector
         % regardless of the type of vector in spikes{k}
-        isivec = [ isivec; difftimes(:) ];
+        isivec = [isivec; difftimes(:)];
     end
 end
diff --git a/pointprocesses/code/spikeraster.m b/pointprocesses/code/spikeraster.m
index cde46dc..a20b0df 100644
--- a/pointprocesses/code/spikeraster.m
+++ b/pointprocesses/code/spikeraster.m
@@ -13,18 +13,17 @@ for k = 1:ntrials
         times = 1000.0*times; % conversion to ms
     end
     for i = 1:length( times )
-      line([times(i) times(i)],[k-0.4 k+0.4], 'Color', 'k' ); 
+      line([times(i) times(i)],[k-0.4 k+0.4], 'Color', 'k'); 
     end
 end
 if tmax < 1.5
-    xlabel( 'Time [ms]' );
+    xlabel('Time [ms]');
     xlim([0.0 1000.0*tmax]);
 else
-    xlabel( 'Time [s]' );
+    xlabel('Time [s]');
     xlim([0.0 tmax]);
 end
-ylabel( 'Trials');
-ylim( [ 0.3 ntrials+0.7 ] )
-
+ylabel('Trials');
+ylim([0.3 ntrials+0.7 ]);
 end