heartbeats
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heartbeats [2010/05/28 03:05] – typo jochen | heartbeats [2010/05/28 23:25] – added two more options jochen | ||
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===== Motivation ===== | ===== Motivation ===== | ||
- | For many tasks, it is often helpful to collect secondary physiological measurements, | + | For many experimental |
===== Requirements ===== | ===== Requirements ===== | ||
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sig Sx1 numeric signal | sig Sx1 numeric signal | ||
opts optional settings | opts optional settings | ||
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* segment-wise beat detection (maximum value position within each sub-segment where value > mean + 0.5 * skew) | * segment-wise beat detection (maximum value position within each sub-segment where value > mean + 0.5 * skew) | ||
- | Next, the detected (or provided) beats will be displayed in a small dialog for places where either the distance between beats is too small or too large (and the shape of the detected beat does not match the mean signature): | + | Next, the detected (or provided) beats will be analyzed, and any irregularities (that is to say, places where either the distance between beats is too small or too large or the shape of the detected beat does not match the mean signature) |
{{: | {{: | ||
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* once all beats in this window are correct, press the accept button | * once all beats in this window are correct, press the accept button | ||
- | If no more bad beats are in the list, the dialog will close automatically. If you wish, you can also manually close the dialog (prematurely) to go on to the next stage. | + | If no more irregularities remain to be checked, the dialog will close automatically. If you wish, you can also manually close the dialog (prematurely) to go on to the next stage. |
In case the plotting has been enabled, the following two displays appear: | In case the plotting has been enabled, the following two displays appear: | ||
- | {{:ecg_and_hr_overview.png|heartbeats plot figure 1}} | + | {{:mean_ecg_signal.png|heartbeats plot figure 1}} |
- | and | + | This first figure simply shows a representation of the mean (each window is re-sampled to match a 100-sample window length) |
- | {{:mean_ecg_signal.png|heartbeats plot figure 2}} | + | {{:ecg_and_hr_overview.png|heartbeats plot figure 2}} |
- | The second figure | + | The second figure shows the entire signal over time in a 20Hz sampling (in blue) with the detected heart-rate |
- | The first figure | + | {{: |
- | {{: | + | ===== Scripting ===== |
+ | Naturally, it is possible to script this function, save the pre-detected heartbeats (without manual interaction/ | ||
heartbeats.txt · Last modified: 2010/06/29 17:17 by jochen