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Audiovisual biofeedback improves motion prediction accuracy
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10.1118/1.4794497
/content/aapm/journal/medphys/40/4/10.1118/1.4794497
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/4/10.1118/1.4794497

Figures

Image of FIG. 1.
FIG. 1.

The AV biofeedback guided (left: a, c, e) and unguided (right: b, d, f) abdominal wall respiratory data for PT = 600 ms. Solid lines represent the respiratory signal and the dotted line represents the predicted data. The bottom line is the error in prediction. (a, b): 75th percentile. (c, d): 50th percentile. (e, f): 25th percentile.

Image of FIG. 2.
FIG. 2.

Box plots of prediction error (RMSE) across prediction times: (a) PT = 50 ms, (b) PT = 200 ms, (c) PT = 600 ms, (d) PT = 1000 ms and (e) PT = 1400 ms for abdominal wall respiratory data. The crosses represent outlier data (data outside ±2.7σ of the mean).

Image of FIG. 3.
FIG. 3.

The AV biofeedback guided (a, c, e) and unguided (b, d, f) diaphragm respiratory data from PT = 600 ms. Solid lines represent the respiratory signal, and the dotted line represents the predicted data. The bottom line is the error in prediction. (a, b): 75th percentile. (c, d): 50th percentile. (e, f): 25th percentile.

Image of FIG. 4.
FIG. 4.

Box plots of prediction error (RMSE) across prediction times: (a) PT = 50 ms*, (b) PT = 200 ms, (c) PT = 600 ms, (d) PT = 1000 ms and (e) PT = 1400 ms for diaphragm respiratory data. The crosses represent outlier data (data outside ±2.7σ of the mean).

Tables

Generic image for table
TABLE I.

RMSE across the five tested prediction times for AV biofeedback-guided breathing, for unguided breathing, and for the reduction of RMSE due to AV biofeedback for abdominal wall respiratory motion.

Generic image for table
TABLE II.

RMSE across the five tested prediction times for AV biofeedback-guided breathing, for unguided breathing, and for the reduction of RMSE due to AV biofeedback for diaphragm motion.

Generic image for table
TABLE III.

Further reduction of prediction error due to AV biofeedback from the first to second study sessions.

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/content/aapm/journal/medphys/40/4/10.1118/1.4794497
2013-03-13
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Audiovisual biofeedback improves motion prediction accuracy
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/4/10.1118/1.4794497
10.1118/1.4794497
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