🔗 Share this article

After being requested to deliver an unprepared five-minute speech and then count backwards in intervals of 17 – while facing a panel of three strangers – 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 thermal cameras.

Anxiety modifies the blood distribution 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 track recuperation.

Infrared technology, based on researcher findings behind the study could be a "revolutionary development" in anxiety studies.

The Scientific Tension Assessment

The scientific tension assessment that I subjected myself to is precisely structured and purposely arranged to be an unpleasant surprise. I came to the research facility with little knowledge what I was about to experience.

Initially, I was told to settle, relax and listen to ambient sound through a audio headset.

So far, so calming.

Afterward, the investigator who was conducting the experiment introduced a panel of three strangers into the space. They each looked at me quietly as the investigator stated that I now had 180 seconds to create a brief presentation about my "dream job".

When noticing the heat rise around my collar area, the experts documented my face changing colour through their heat-sensing equipment. My nasal area rapidly cooled in temperature – showing colder on the heat map – as I considered how to navigate this unplanned presentation.

Scientific Results

The researchers have carried out this same stress test on 29 volunteers. In all instances, they saw their nose dip in temperature by between three and six degrees.

My nose dropped in heat by a small amount, as my biological response system pushed blood flow away from my nasal region and to my visual and auditory organs – a physiological adaptation to help me to observe and hear for danger.

Most participants, like me, returned to normal swiftly; their facial temperatures rose to baseline measurements within a brief period.

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

"You are used to the camera and speaking to unknown individuals, so you're probably quite resilient to public speaking anxieties," she explained.

"However, even individuals such as yourself, trained to be anxiety-provoking scenarios, demonstrates a biological blood flow shift, so which implies this 'nasal dip' is a consistent measure of a changing stress state."

Stress Management Applications

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

"The period it takes an individual to bounce back from this cooling effect could be an objective measure of how effectively somebody regulates their anxiety," noted the lead researcher.

"Should they recover remarkably delayed, might this suggest a warning sign of psychological issues? Could this be a factor that we can tackle?"

Since this method is without physical contact and records biological reactions, it could also be useful to observe tension in infants or in individuals unable to express themselves.

The Calculation Anxiety Assessment

The subsequent challenge in my tension measurement was, personally, even worse than the initial one. I was instructed to subtract backwards from 2023 in steps of 17. One of the observers of expressionless people interrupted me each instance I committed an error and instructed me to begin anew.

I admit, I am bad at mental arithmetic.

While I used uncomfortable period trying to force my thinking to accomplish mathematical calculations, the only thought was that I wished to leave the progressively tense environment.

Throughout the study, merely one of the numerous subjects for the anxiety assessment did truly seek to depart. The others, like me, accomplished their challenges – likely experiencing assorted amounts of embarrassment – and were compensated by another calming session of white noise through audio devices at the conclusion.

Non-Human Applications

Possibly included in the most remarkable features of the technique is that, because thermal cameras monitor physiological anxiety indicators that is inherent within many primates, it can additionally be applied in other species.

The researchers are actively working on its use in refuges for primates, comprising various ape species. They want to work out how to decrease anxiety and improve the wellbeing of creatures that may have been removed from harmful environments.

Researchers have previously discovered that displaying to grown apes recorded material of baby chimpanzees has a relaxing impact. When the investigators placed a display monitor close to the rehabilitated primates' habitat, they saw the noses of primates that viewed the content warm up.

Therefore, regarding anxiety, viewing infant primates interacting is the inverse of a unexpected employment assessment or an on-the-spot subtraction task.

Potential Uses

Using thermal cameras in primate refuges could turn out to be valuable in helping rehabilitated creatures to adapt and acclimate to a new social group and unfamiliar environment.

"{