26 lines
768 B
Matlab
26 lines
768 B
Matlab
function [time, rate] = convolutionRate(spike_times, sigma, dt, t_max)
|
|
% Calculates the firing rate with the convolution method.
|
|
% Arguments:
|
|
% spike_times, a vector containing the spike times.
|
|
% sigma, the standard deviation of the Gaussian kernel
|
|
% in seconds.
|
|
% dt, the temporal resolution in seconds.
|
|
% t_max, the trial duration in seconds.
|
|
%
|
|
% Returns two vectors containing the time and the rate.
|
|
|
|
time = 0:dt:t_max - dt;
|
|
rate = zeros(size(time));
|
|
spike_indices = round(spike_times / dt);
|
|
rate(spike_indices) = 1;
|
|
kernel = gaussKernel(sigma, dt);
|
|
|
|
rate = conv(rate, kernel, 'same');
|
|
end
|
|
|
|
|
|
function y = gaussKernel(s, step)
|
|
x = -4 * s:step:4 * s;
|
|
y = exp(-0.5 .* (x ./ s) .^ 2) ./ sqrt(2 * pi) / s;
|
|
end
|