Need to loop through 2 vectors of 0's and 1's, if a 1 occurs in vector 1 before vector 2, then i need to use a specific eqn. if vector 2 has a 1 before vector 1, then i need to use a seperate eqn.Each vector is the same size.

1 view (last 30 days)
I have two vectors that I am working with. 1) Pre_spiketime 2) post_spiketime. The pre_spiketime is a vector (1, 5000) that is zeros if a neuron does not fire and 1 if the neuron does fire. Each column in this represent a time step. The same for post_spiketime. Basially what I want to do is to write a loop that will say if pre_spiketime is before post_spike time (i.e within 20ms) i will use one equation. If post_spiketime is before pre_spiketime by 20ms, then I use another equation. Can someone explain how I can do this.
I also have made these vectors into time points. so instead of a 1, they represent the time at which they fire as well. I dont know if this would help?

Answers (2)

David Hill
David Hill on 22 Apr 2020
I assume every pre-spike has a corresponding post-spike.
a=find(preSpike);
b=find(postSpike);
timeDiff=step*(b-a);
%not sure where you want to go from here
  2 Comments
David Hill
David Hill on 22 Apr 2020
a=find(preSpike);
b=find(postSpike);
for k=a
if ~isempty(b(b>a&b<a+10))%+10? whatever maximum post-spike will occur
%execute what you want
end
end

Sign in to comment.


Andrei Bobrov
Andrei Bobrov on 22 Apr 2020
Edited: Andrei Bobrov on 22 Apr 2020
Let a - your Pre_spiketime, b - Post_spiketime.
d = a(:) - b(:);
e = d.*[true;diff(d)~=0];
t = e ~= 0;
l = cumsum(t);
out = l;
out(l>0) = 2 - mod(l(l>0),2);
or
add = 0;
lo = l(1) == 0;
if lo, add = 1; end
out = accumarray(l + add,1);
if lo, out = out(2:end); end

Categories

Find more on Startup and Shutdown in Help Center and File Exchange

Tags

Products

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by