Video monitoring of oxygen saturation during controlled episodes of acute hypoxia

Addison, Paul; Foo, David M. H.; Jacquel, Dominique; Borg, Ulf

doi:10.1109/embc.2016.7591788

Cited by 3 publications

(2 citation statements)

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“…iPPG is acquired using a video camera instead of a photodetector, under dedicated [19,[22][23][24] or ambient [21,25] light. The video is usually recorded from palm or face regions [21][22][23][24][25].Pilot studies have demonstrated the possibility of extracting iPPG from anesthetized animals, specifically pigs [26,27]. Since iPPG allows easy and non-invasive estimation of pulse rate, this technique would be very useful for NHP studies.…”

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confidence: 99%

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Using imaging photoplethysmography for heart rate estimation in non-human primates

Unakafov

Moeller

Kagan

et al. 2018

Preprint

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For humans and for non-human primates heart rate is a reliable indicator of an individual's current physiological state, with applications ranging from health checks to experimental studies of cognitive and emotional state. In humans, changes in the optical properties of the skin tissue correlated with cardiac cycles (imaging photoplethysmogram, iPPG) allow non-contact estimation of heart rate by its proxy, pulse rate. Yet, there is no established simple and non-invasive technique for pulse rate measurements in awake and behaving animals. Using iPPG, we here demonstrate that pulse rate in rhesus monkeys can be accurately estimated from facial videos. We computed iPPGs from seven color facial videos of three awake head-stabilized rhesus monkeys. Pulse rate estimated from iPPGs was in good agreement with reference data from a pulse-oximeter with error of pulse rate estimation below 5% for 82% of all epochs, and below 10% for 98% of the epochs. We conclude that iPPG allows non-invasive and non-contact estimation of pulse rate in non-human primates, which is useful for physiological studies and can be used toward welfare-assessment of non-human primates in research.

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mentioning

confidence: 99%

“…Pilot studies have demonstrated the possibility of extracting iPPG from anesthetized animals, specifically pigs [26,27]. Since iPPG allows easy and non-invasive estimation of pulse rate, this technique would be very useful for NHP studies.…”

mentioning

confidence: 99%

Using imaging photoplethysmography for heart rate estimation in non-human primates

Unakafov

Moeller

Kagan

et al. 2018

Preprint

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Contactless vital signs monitoring in macaques using a mm-wave FMCW radar

Zhang,

Hu,

Chen

et al. 2024

Sci Rep

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Heart rate (HR) and respiration rate (RR) play an important role in the study of complex behaviors and their physiological correlations in non-human primates (NHPs). However, collecting HR and RR information is often challenging, involving either invasive implants or tedious behavioral training, and there are currently few established simple and non-invasive techniques for HR and RR measurement in NHPs owing to their stress response or indocility. In this study, we employed a frequency-modulated continuous wave (FMCW) radar to design a novel contactless HR and RR monitoring system. The designed system can estimate HR and RR in real time by placing the FMCW radar on the cage and facing the chest of both awake and anesthetized macaques, the NHP investigated in this study. Experimental results show that the proposed method outperforms existing methods, with averaged absolute errors between the reference monitor and radar estimates of 0.77 beats per minute (bpm) and 1.29 respirations per minute (rpm) for HR and RR, respectively. In summary, we believe that the proposed non-invasive and contactless estimation method could be generalized as a HR and RR monitoring tool for NHPs. Furthermore, after modifying the radar signal-processing algorithms, it also shows promise for applications in other experimental animals for animal welfare, behavioral, neurological, and ethological research.

show abstract

Using imaging photoplethysmography for heart rate estimation in non-human primates

et al. 2018

View full text Add to dashboard Cite

For humans and for non-human primates heart rate is a reliable indicator of an individual’s current physiological state, with applications ranging from health checks to experimental studies of cognitive and emotional state. In humans, changes in the optical properties of the skin tissue correlated with cardiac cycles (imaging photoplethysmogram, iPPG) allow non-contact estimation of heart rate by its proxy, pulse rate. Yet, there is no established simple and non-invasive technique for pulse rate measurements in awake and behaving animals. Using iPPG, we here demonstrate that pulse rate in rhesus monkeys can be accurately estimated from facial videos. We computed iPPGs from eight color facial videos of four awake head-stabilized rhesus monkeys. Pulse rate estimated from iPPGs was in good agreement with reference data from a contact pulse-oximeter: the error of pulse rate estimation was below 5% of the individual average pulse rate in 83% of the epochs; the error was below 10% for 98% of the epochs. We conclude that iPPG allows non-invasive and non-contact estimation of pulse rate in non-human primates, which is useful for physiological studies and can be used toward welfare-assessment of non-human primates in research.

show abstract

Video monitoring of oxygen saturation during controlled episodes of acute hypoxia

Cited by 3 publications

References 22 publications

Using imaging photoplethysmography for heart rate estimation in non-human primates

Using imaging photoplethysmography for heart rate estimation in non-human primates

Contactless vital signs monitoring in macaques using a mm-wave FMCW radar

Using imaging photoplethysmography for heart rate estimation in non-human primates

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