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When I was asked to present an off-the-cuff short talk and then subtract sequentially in increments of seventeen – all in front of a group of unfamiliar people – the sudden tension was written on my face.

That is because scientists were filming this somewhat terrifying situation for a research project that is studying stress using infrared imaging.

Tension changes the blood distribution in the face, and experts have determined that the cooling effect of a subject's face can be used as a indicator of tension and to monitor recovery.

Heat mapping, as stated by the scientists conducting the research could be a "game changer" in anxiety studies.

The Scientific Tension Assessment

The scientific tension assessment that I underwent is precisely structured and purposely arranged to be an discomforting experience. I arrived at the research facility with minimal awareness what I was about to experience.

Initially, I was instructed to position myself, unwind and experience ambient sound through a audio headset.

Thus far, quite relaxing.

Then, the scientist who was running the test invited a group of unfamiliar people into the room. They each looked at me silently as the investigator stated that I now had 180 seconds to develop a short talk about my "perfect occupation".

While experiencing the warmth build around my throat, the experts documented my face changing colour through their thermal camera. My facial temperature immediately decreased in heat – appearing cooler on the infrared display – as I considered how to navigate this unplanned presentation.

Scientific Results

The scientists have conducted this equivalent anxiety evaluation on numerous subjects. In each, they observed the nasal area decrease in warmth by several degrees.

My nose dropped in temperature by two degrees, as my biological response system redirected circulation from my nasal region and to my sensory systems – a physical reaction to enable me to observe and hear for danger.

The majority of subjects, comparable to my experience, bounced back rapidly; their nasal areas heated to normal readings within a few minutes.

Principal investigator noted that being a journalist and presenter has probably made me "somewhat accustomed to being placed in anxiety-provoking circumstances".

"You're accustomed to the camera and conversing with unfamiliar people, so you're likely relatively robust to public speaking anxieties," she explained.

"But even someone like you, trained to be tense circumstances, shows a bodily response alteration, so this indicates this 'nasal dip' is a consistent measure of a altering tension condition."

Tension Regulation Possibilities

Stress is part of life. But this revelation, the scientists say, could be used to assist in controlling damaging amounts of stress.

"The period it takes an individual to bounce back from this cooling effect could be an quantifiable indicator of how well an individual controls their anxiety," explained the principal investigator.

"Should they recover exceptionally gradually, could this indicate a potential indicator of anxiety or depression? Is this an aspect that we can address?"

Because this technique is non-invasive and monitors physiological changes, it could additionally prove valuable to observe tension in babies or in those with communication challenges.

The Mathematical Stress Test

The subsequent challenge in my tension measurement was, from my perspective, even worse than the initial one. I was instructed to subtract in reverse starting from 2023 in intervals of 17. One of the observers of three impassive strangers stopped me each instance I made a mistake and asked me to begin anew.

I admit, I am bad at mental arithmetic.

While I used uncomfortable period attempting to compel my brain to perform arithmetic operations, all I could think was that I wished to leave the increasingly stuffy room.

Throughout the study, merely one of the 29 volunteers for the tension evaluation did truly seek to exit. The others, comparable to my experience, completed their tasks – presumably feeling varying degrees of embarrassment – and were rewarded with another calming session of white noise through headphones at the end.

Primate Study Extensions

Possibly included in the most unexpected elements of the approach is that, as heat-sensing technology measure a physical stress response that is inherent within many primates, it can also be used in animal primates.

The researchers are presently creating its implementation within refuges for primates, including chimpanzees and gorillas. They seek to establish how to decrease anxiety and improve the wellbeing of animals that may have been removed from harmful environments.

Researchers have previously discovered that presenting mature chimps recorded material of baby chimpanzees has a relaxing impact. When the investigators placed a visual device close to the rescued chimps' enclosure, they observed the nasal areas of animals that watched the material warm up.

So, in terms of stress, watching baby animals playing is the opposite of a surprise job interview or an impromptu mathematical challenge.

Future Applications

Using thermal cameras in primate refuges could turn out to be useful for assisting rescued animals to adapt and acclimate to a new social group and unknown territory.

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