how to create a vector for a stimulus?

2021 7 12
1 个回答
更新时间：2021 7 12
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Hello everyone,
I need help creating a vector based on the stimulus's changing position.
I have a stimulus that moves from the center down and from the center up, randomly every 0.9 seconds (See thinnest line in the image).
This stimulus has an amplitude of 70 centimeters.
How can I create a vector that plots this stimulus?
thanks!

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回答（1 个）

Walter Roberson
Walter Roberson 2021-7-12
Ran in:

0 个投票

Ran in:
A = 70;
p = 0.5;
t = (0:100)*0.9;
y = zeros(size(t));
state = 0;
for K = 2 : numel(t)
R = rand();
if R > p
y(K) = y(K-1);
elseif state == -1 || state == 1
state = 0;
y(K) = 0;
elseif R > p/2
state = -1;
y(K) = -A;
else
state = 1;
y(K) = A;
end
end
stairs(t, y)

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