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I'm looking for a function, where the result is something like this:

enter image description here

I tried to figure it out myself, but I have no idea how to manage it. f(x) = ...

Thanks in advance,

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    $\begingroup$ The heart beat function for a dead guy is defined by $f(x)=0.$ $\endgroup$ Jan 19, 2013 at 0:02
  • $\begingroup$ Hodgkin-Huxley gives a system of differential equations whose solutions look pretty close. As in the normal pattern is a limit cycle. $\endgroup$
    – AHusain
    Apr 25, 2016 at 21:46
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    $\begingroup$ Here's a fun little function if you're just going for the aesthetic: sin(x)^63 * sin(x+1.5)*8 $\endgroup$ Oct 5, 2018 at 9:14
  • $\begingroup$ The derivative of (cos(x))^x looks a little bit like that for x > 0 (in my opinion) $\endgroup$
    – Alex
    Nov 18, 2021 at 21:30

1 Answer 1

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A silly answer would be "fit a spline to your curve", but the meaningful answer tries to extract information on the condition of the heart from the characteristic features of the electrocardiogram; there is an extensive literature on this problem, see for example:

Functional Data Analytic Approach of Modeling ECG T-wave Shape to Measure Cardiovascular Behavior.

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