I am new to statistics. I found a script which makes a autocorrelogram graph(see attached) of spike timings of a neuron. I got the graph but I am not able to interpret it. Matlab Code below.
function autocorrelogram(spiketimes) %spiketimes = [10413177585,10413282812,10413379677,10413402313,10413410739,10413422026,..] isi=; for i = 1:length(spiketimes) isi = [isi; spiketimes-spiketimes(i)]; end isi(isi>2000000)=; isi(isi<-2000000)=; isi=isi./1000000; save isi; figure hist(isi,-2:0.02:2);
What the above graph mean? At zero there is maximum correlation and after that the correlation decreases?