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After being requested to deliver an unprepared brief presentation and then subtract sequentially in steps of 17 – all in front of a trio of unknown individuals – the intense pressure was visible in my features.

The reason was that researchers were filming this rather frightening situation for a scientific study that is analyzing anxiety using infrared imaging.

Stress alters the blood flow in the facial area, and researchers have found that the thermal decrease of a person's nose can be used as a measure of stress levels and to observe restoration.

Thermal imaging, based on researcher findings leading the investigation could be a "game changer" in anxiety studies.

The Scientific Tension Assessment

The research anxiety evaluation 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 in for.

First, I was asked to sit, relax and experience ambient sound through a audio headset.

Thus far, quite relaxing.

Subsequently, the researcher who was conducting the experiment introduced a group of unfamiliar people into the area. They collectively gazed at me quietly as the scientist explained that I now had a brief period to create a five minute speech about my "ideal career".

As I felt the warmth build around my collar area, the experts documented my face changing colour through their infrared device. My nose quickly dropped in temperature – turning blue on the infrared display – as I considered how to navigate this spontaneous talk.

Scientific Results

The investigators have performed this equivalent anxiety evaluation on multiple participants. In all instances, they saw their nose dip in temperature by a noticeable amount.

My nose dropped in heat by a small amount, as my physiological mechanism pushed blood flow away from my nose and to my sensory systems – a physical reaction to enable me to look and listen for threats.

The majority of subjects, comparable to my experience, bounced back rapidly; their facial temperatures rose to normal readings within a brief period.

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

"You are used to the recording equipment and talking with unfamiliar people, so it's probable you're relatively robust to interpersonal pressures," the researcher noted.

"However, even individuals such as yourself, accustomed to being stressful situations, shows a biological blood flow shift, so that suggests this 'nasal dip' is a reliable indicator of a shifting anxiety level."

Anxiety Control Uses

Stress is part of life. But this discovery, the scientists say, could be used to assist in controlling harmful levels of anxiety.

"The length of time it takes a person to return to normal from this temperature drop could be an reliable gauge of how effectively a person manages their tension," explained the lead researcher.

"Should they recover exceptionally gradually, could that be a risk marker of mental health concerns? Could this be a factor that we can tackle?"

As this approach is non-invasive and measures a physical response, it could also be useful to observe tension in babies or in people who can't communicate.

The Mental Arithmetic Challenge

The following evaluation in my stress assessment was, from my perspective, even worse than the first. 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 start again.

I confess, I am inexperienced in calculating mentally.

During the embarrassing length of time trying to force my thinking to accomplish mathematical calculations, the only thought was that I wanted to flee the progressively tense environment.

Throughout the study, merely one of the multiple participants for the tension evaluation did genuinely request to exit. The remainder, similar to myself, finished their assignments – likely experiencing assorted amounts of discomfort – and were compensated by another calming session of background static through earphones at the end.

Primate Study Extensions

Possibly included in the most remarkable features of the method is that, since infrared imaging monitor physiological anxiety indicators that is natural to various monkey types, it can furthermore be utilized in animal primates.

The scientists are actively working on its use in refuges for primates, such as chimps and gorillas. They seek to establish how to reduce stress and boost the health of creatures that may have been removed from traumatic circumstances.

Researchers have previously discovered that presenting mature chimps video footage of baby chimpanzees has a relaxing impact. When the researchers set up a visual device adjacent to the protected apes' living area, they noticed the facial regions of primates that viewed the footage heat up.

So, in terms of stress, viewing infant primates interacting is the inverse of a surprise job interview or an on-the-spot subtraction task.

Potential Uses

Implementing heat-sensing technology in primate refuges could turn out to be valuable in helping protected primates to become comfortable to a different community and unfamiliar environment.

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