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Upon being told to give an impromptu brief presentation and then count backwards in increments of seventeen – while facing a trio of unknown individuals – the intense pressure was written on my face.

This occurred since researchers were documenting this somewhat terrifying experience for a scientific study that is examining tension using heat-sensing technology.

Stress alters the blood distribution in the face, and experts have determined that the thermal decrease of a subject's face can be used as a measure of stress levels and to monitor recovery.

Thermal imaging, according to the psychologists behind the study could be a "transformative advancement" in anxiety studies.

The Experimental Stress Test

The scientific tension assessment that I subjected myself to is meticulously designed and purposely arranged to be an discomforting experience. I arrived at the research facility with minimal awareness what I was facing.

Initially, I was asked to sit, unwind and listen to white noise through a pair of earphones.

So far, so calming.

Subsequently, the scientist who was conducting the experiment introduced a group of unfamiliar people into the space. They collectively gazed at me quietly as the scientist explained that I now had a brief period to create a short talk about my "perfect occupation".

As I felt the warmth build around my collar area, the researchers recorded my complexion altering through their infrared device. My nasal area rapidly cooled in warmth – appearing cooler on the infrared display – as I contemplated ways to manage this spontaneous talk.

Research Findings

The investigators have carried out this equivalent anxiety evaluation on 29 volunteers. In each, they observed the nasal area cool down by between three and six degrees.

My facial temperature decreased in temperature by two degrees, as my physiological mechanism redirected circulation from my nose and to my eyes and ears – a bodily response to enable me to look and listen for hazards.

Most participants, comparable to my experience, returned to normal swiftly; their noses warmed to normal readings within a few minutes.

Lead researcher explained that being a journalist and presenter has probably made me "quite habituated to being placed in tense situations".

"You are used to the camera and speaking to unknown individuals, so you're likely quite resilient to public speaking anxieties," the scientist clarified.

"However, even individuals such as yourself, accustomed to being stressful situations, shows a biological blood flow shift, so which implies this 'nasal dip' is a consistent measure of a changing stress state."

Tension Regulation Possibilities

Anxiety is natural. But this finding, the researchers state, could be used to assist in controlling damaging amounts of tension.

"The period it takes an individual to bounce back from this temperature drop could be an quantifiable indicator of how effectively an individual controls their tension," explained the principal investigator.

"Should they recover remarkably delayed, could that be a risk marker of anxiety or depression? Is it something that we can tackle?"

Since this method is non-invasive and monitors physiological changes, it could furthermore be beneficial to track anxiety in newborns or in people who can't communicate.

The Mathematical Stress Test

The following evaluation in my anxiety evaluation was, in my view, more challenging than the initial one. I was asked to count in reverse starting from 2023 in increments of seventeen. A member of the group of unresponsive individuals stopped me every time I made a mistake and asked me to begin anew.

I confess, I am bad at doing math in my head.

During the awkward duration trying to force my thinking to accomplish subtraction, all I could think was that I wished to leave the increasingly stuffy room.

In the course of the investigation, only one of the numerous subjects for the stress test did genuinely request to depart. The remainder, comparable to my experience, accomplished their challenges – probably enduring different levels of embarrassment – and were compensated by another calming session of background static through audio devices at the end.

Animal Research Applications

Perhaps one of the most surprising aspects of the method is that, because thermal cameras monitor physiological anxiety indicators that is innate in various monkey types, it can also be used in other species.

The investigators are currently developing its implementation within sanctuaries for great apes, comprising various ape species. They seek to establish how to reduce stress and boost the health of animals that may have been rescued from distressing situations.

The team has already found that displaying to grown apes visual content of baby chimpanzees has a relaxing impact. When the researchers set up a visual device adjacent to the rehabilitated primates' habitat, they saw the noses of primates that viewed the material heat up.

So, in terms of stress, observing young creatures engaging in activities is the contrary to a unexpected employment assessment or an impromptu mathematical challenge.

Coming Implementations

Using thermal cameras in ape sanctuaries could prove to be useful for assisting rehabilitated creatures to adjust and settle in to a new social group and strange surroundings.

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