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 次查看（过去 30 天）
Joshua Harrison
Joshua Harrison 2020-4-22
编辑： Andrei Bobrov 2020-4-22
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?

请先登录，再回答此问题。

回答（2 个）

David Hill
David Hill 2020-4-22
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 个评论
Joshua Harrison
Joshua Harrison 2020-4-22
not necessarily. so when I did find(prespike) I had a vector 1x14
when i did find(postspike) i had a vector of 1x7
this was causing issues for me!
David Hill
David Hill 2020-4-22
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

请先登录，再进行评论。

Andrei Bobrov
Andrei Bobrov 2020-4-22
编辑：Andrei Bobrov 2020-4-22
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

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by