🔗 Share this article

After being requested to give an impromptu brief presentation and then count backwards in steps of 17 – all in front of a panel of three strangers – the acute stress was visible in my features.

That is because scientists were filming this rather frightening scenario for a investigation that is studying stress using heat-sensing technology.

Anxiety modifies the circulation in the face, and scientists have discovered that the drop in temperature of a subject's face can be used as a indicator of tension and to monitor recovery.

Infrared technology, based on researcher findings conducting the research could be a "revolutionary development" in stress research.

The Experimental Stress Test

The research anxiety evaluation that I subjected myself to is carefully controlled and deliberately designed to be an unpleasant surprise. I came to the academic institution with no idea what I was in for.

First, I was instructed to position myself, unwind and listen to white noise through a set of headphones.

So far, so calming.

Subsequently, the scientist who was overseeing the assessment invited a trio of unknown individuals into the area. They collectively gazed at me quietly as the investigator stated that I now had a brief period to create a short talk about my "ideal career".

While experiencing the warmth build around my neck, the experts documented my face changing colour through their thermal camera. My nasal area rapidly cooled in warmth – showing colder on the infrared display – as I considered how to bluster my way through this unplanned presentation.

Study Outcomes

The investigators have performed this same stress test on numerous subjects. In each, they noticed the facial region dip in temperature by a noticeable amount.

My nasal area cooled in heat by a couple of degrees, as my biological response system pushed blood flow away from my nose and to my visual and auditory organs – a physiological adaptation to help me to look and listen for danger.

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

Lead researcher noted that being a reporter and broadcaster has probably made me "quite habituated to being subjected to tense situations".

"You're accustomed to the filming device and talking with unknown individuals, so you're probably quite resilient to interpersonal pressures," the scientist clarified.

"However, even individuals such as yourself, accustomed to being stressful situations, exhibits a biological blood flow shift, so this indicates this 'nose temperature drop' is a consistent measure of a changing stress state."

Anxiety Control Uses

Stress is part of life. But this discovery, 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 objective measure of how efficiently a person manages their stress," explained the principal investigator.

"Should they recover unusually slowly, could that be a potential indicator of mental health concerns? Is it something that we can tackle?"

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

The Mental Arithmetic Challenge

The subsequent challenge in my tension measurement was, in my view, even worse than the opening task. I was told to calculate backwards from 2023 in intervals of 17. A member of the group of three impassive strangers interrupted me every time I calculated incorrectly and told me to recommence.

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

While I used uncomfortable period attempting to compel my brain to perform mathematical calculations, my sole consideration was that I wanted to flee the progressively tense environment.

During the research, merely one of the numerous subjects for the tension evaluation did actually ask to leave. The remainder, similar to myself, completed their tasks – presumably feeling varying degrees of discomfort – and were rewarded with an additional relaxation period of white noise through audio devices at the conclusion.

Non-Human Applications

Possibly included in the most surprising aspects of the approach is that, since infrared imaging record biological tension reactions that is inherent within numerous ape species, it can also be used in other species.

The investigators are actively working on its application in sanctuaries for great apes, such as chimps and gorillas. They aim to determine how to decrease anxiety and enhance the welfare of animals that may have been saved from harmful environments.

The team has already found that presenting mature chimps recorded material of young primates has a relaxing impact. When the scientists installed a display monitor adjacent to the rescued chimps' enclosure, they noticed the facial regions of creatures that observed the material heat up.

Therefore, regarding anxiety, observing young creatures engaging in activities is the inverse of a unexpected employment assessment or an impromptu mathematical challenge.

Potential Uses

Implementing heat-sensing technology in ape sanctuaries could turn out to be beneficial in supporting protected primates to adapt and acclimate to a different community and strange surroundings.

"{