加拿大研究者利用虚拟现实测谎来判断恋童癖

【加拿大研究者利用虚拟现实测谎来判断恋童癖】加拿大魁北克大学的研究团队开发了一项备受争议的技术:利用虚拟现实测谎来判断恋童癖,从而评估性犯罪者。研究人员检测了60名被指控为涉嫌性侵儿童的嫌疑人,利用虚拟现实呈现3D的儿童裸体动画,受试者携带传感器沉浸于虚拟现实中,被检测血流量。同时,在虚拟现实中模拟儿童受害者恐惧与悲伤,来检测受试者是否会感到同情,还是会被痛苦所吸引。项目负责人Renaud知道这样技术的采用充满争议且具有侵入性,同时可靠性也未能得到完全的保障。同时也表示因为没有真正的孩子参与,所以是合法的。

The virtual reality 'polygraph for pedophiles' being used to assess sex offenders

  • Method uses 3D digital images of nude children so experts can asses pedophilia
  • Device measures blood flow to the penis and glasses are used to project images
  • Researchers monitor the blood flow as patients look at the virtual reality images 

Pedophilia affects up to 5 percent of men, but has been difficult to study, as it is deemed unethical to use real images of children to measure arousal.

Now, experts have developed a technique that harnesses that power of virtual reality to present subjects with 3D animations of nude minors in order to monitor their behavior.

Patients are strapped with a device that measures blood flow to the penis, while they wear stereoscopic glasses that project digital images on a wall - allowing experts to determine if the individual has pedophilia tendencies.

Experts  used virtual reality to present subjects with 3D animations of nude children to monitor their behavior. Patients are strapped with a device that measures blood flow to the penis, while they wear stereoscopic glasses that project digital images on a wall

Experts  used virtual reality to present subjects with 3D animations of nude children to monitor their behavior. Patients are strapped with a device that measures blood flow to the penis, while they wear stereoscopic glasses that project digital images on a wall

HOW DOES IT WORK?

Patients wear a plethysmography, or PPG, which is a cuff-shaped sensor that measures changes in the circumference of the penis based on blood flow.

They also wear a pair of stereoscopic glasses that created the 3D images on a surrounding wall inside of the testing room.

The glasses are equip with eye-tracking technology to ensure the subject is not tricking the system by looking away from the images.

With this technology, the team is able to create characters of all ages, shapes, and features in a fashion that 'corresponds with the patients' victims or sexual fantasies,' Solon explained.

 As digital images of nude children appeared, the researches measured the participant's reaction based on the blood flow to their genitalia.

The controversial technique was developed by a team at the University of Quebec in Outaouais, who believes the method could be used to combat the growing number of incidents, as it also includes psychological assessments to provide individuals with the correct treatment, The Guardian reported.

'We do develop pornography, but these images and animations are not used for the pleasure of the patient but to assess them,' Patrice Renaud, who heads up the project told the website.

'It's a bit like using a polygraph but with other measurement techniques.'

The researchers conducted a study in August with 60 participants, who were either accused or convicted of child sex crimes and men who had no criminal record nor sexual interest in minors.

Each subject was asked to wear a plethysmography, or PPG, which is a cuff-shaped sensor that measures changes in the circumference of the penis based on blood flow.

They were also asked to wear a pair of stereoscopic glasses that created the 3D images on a surrounding wall inside of the testing room.

The glasses were equip with eye-tracking technology to ensure the subject is not tricking the system by looking away from the images.

With this technology, the team is able to create characters of all ages, shapes, and features in a fashion that 'corresponds with the patients' victims or sexual fantasies,' Solon explained.

As digital images of nude children appeared, the researches measured the participant's reaction based on the blood flow to their genitalia.

Patients are asked to wear a pair of stereoscopic glasses that created the 3D images on a surrounding wall inside of the testing room. The glasses were equip with eye-tracking technology to ensure the subject is not tricking the system by looking away from the images

Patients are asked to wear a pair of stereoscopic glasses that created the 3D images on a surrounding wall inside of the testing room. The glasses were equip with eye-tracking technology to ensure the subject is not tricking the system by looking away from the images

In the experiment, the subjects were instructed pay attention to the 3D animations in which they were about to be immersed for five 90-second periods (60 seconds with the virtual character and the last 30 seconds without).

After analyzing the measurements, Renaud was able to determine that whether or not 54 out of the 60 participants had shown signs of pedophilia or not, PBS reported.

Renaud has not ignored the fact that using the PPG is not only controversial and invasive, but its reliability has not been scientifically confirmed.

As digital images of nude children appeared, the researches measured the participant's reaction based on the blood flow to their genitalia. Top shows the measurements of a person who is not sexually interested in children and the bottom is of an individual who is

As digital images of nude children appeared, the researches measured the participant's reaction based on the blood flow to their genitalia. Top shows the measurements of a person who is not sexually interested in children and the bottom is of an individual who is

However, the team is moving towards adapting an alternative – electroencephalography.

Researchers have suggested that the cap could monitor a person's 'empathy response to expressions of pain, fear or sadness in the virtual child victim,' Solon reported.

'If we find that the guy is attracted to children and doesn't feel empathy for the fact that the child is in pain, that's good information for predicting behavior,' Renaud said.

He and his team are analyzing about 80 patients per year and has added those deemed rapists and sexual deviants by the court.

The team is moving towards adapting an alternative to the PPG ¿ electroencephalography. Researchers have suggested that the cap could monitor a person's 'empathy response to expressions of pain, fear or sadness in the virtual child victim

Although experts view this systems as a way to treat pedophile, some see it could potentially used as a way for pedophiles to continue their behavior, even they are not actually offending.

Ethan Edwards, the co-founder of 'Virtuous Pedophiles', an online support group for people attracted to children but who do not want to molest them, believes the technology could stop people from carrying out the crime in real-life.

He has suggested that because there are no real children involved, it should be made legal, as well as 'life-size child sex dolls and erotic stories about children'.

Read more: http://www.dailymail.co.uk/sciencetech/article-4586580/Virtual-reality-used-assess-sex-offenders.html#ixzz4jSrs80wp
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