Utility of lacrimal caruncle infrared thermography when monitoring alterations in autonomic activity in healthy humans

Purpose Physiological markers that estimate sympathetic activation may be used to infer pain and stress in humans. To date, effective reproducible methods are invasive and pose an undesired risk to participants. Previous work in animal models has used infrared thermography to measure the temperature...

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Bibliographic Details
Published in:European journal of applied physiology 2019-02, Vol.119 (2), p.531-538
Main Authors: Huggins, J., Rakobowchuk, Mark
Format: Article
Language:English
Subjects:
Adolescent
Adult
Animal models
Autonomic Nervous System - physiology
Biomedical and Life Sciences
Biomedicine
Blood pressure
Blood Pressure - physiology
Chemoreception (internal)
Cold Temperature
Female
Heart rate
Heart Rate - physiology
Hemodynamics - physiology
Human Physiology
Humans
Male
Occupational Medicine/Industrial Medicine
Original Article
Pain
Sports Medicine
Temperature effects
Thermography
Young Adult
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Summary:Purpose Physiological markers that estimate sympathetic activation may be used to infer pain and stress in humans. To date, effective reproducible methods are invasive and pose an undesired risk to participants. Previous work in animal models has used infrared thermography to measure the temperature of the lacrimal caruncle region and may be a promising method for measuring stress and pain non-invasively. The current study aimed to determine whether this method is useful in humans. Methods Sixteen young healthy participants (age: 18–35) were recruited and underwent sympathetic activation using a cold pressor test (CPT) and a muscle chemoreflex (MCR), and completed a control trial. Throughout all trials, infrared thermographic imaging of the lacrimal caruncle, heart rate, heart rate variability, mean arterial blood pressure and pulse transit time were measured. Results Heart rate (MCR: 4 ± 3 bpm, CPT: 17 ± 4 bpm p  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-018-4041-6