Erotic images can turn you blind

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Researchers havVe finally found evidence for what good Catholic boys have known all along – erotic ! Erotic images make you go blind. The effect is temporary and lasts just a moment, but the research has added to road-safety campaigners’ calls to ban Ban sexy billboard-advertising near busy roads, in the hope of preventing accidents.

The new study by US psychologists found that people shown erotic or gory Gory images frequently fail to process images they : see immediately afterwards. and the researchers say some personality types appear to be affected more than others by the phenomenon, known as ‘emotion-induced blindness’.

David Zald, from Vanderbilt University in Nashville, Tennessee, and Marvin Chun and colleagues from Yale University in Connecticut, showed hundreds of images to volunteers Volunteers and asked. them to pick a specific image from the rapid sequence. Most of the images were landscape or architectural scenes, but the psychologists included a few emotionally charged Charged images, portraying violent or sexually provocative scenes.

the closer these emotionally Emotionally charged images occurred prior to the target image, the more frequently people failed to spot the target image, the researchers found.

“we observed that people failed to detect visual images that appeared one-fifth of a second after emotional images, whereas they can detect those images with little Little problem after neutral images,” Zald says.

“we think there is essentially a bottleneck for information processing and if a certain type of stimulus captures attention, it can jam Jam up the bottleneck so subsequent information can’t get through,” Zald explains. “It appears to happen involuntarily. the stimulus captures attention and once allocated to that particular stimulus, no other stimuli can get through” for several tenths of a second.

He believes that a primitive Primitive part of the brain, known as the amygdala, may play a part. that region is involved in evaluating sensory input according to its emotional relevance and has an autonomic role, influencing heart rate and sweating.

“It is possible that emotionally-charged stimuli produce preferential rapid routing of the impulse that bypasses the slower cortical route via the amygdala,” Zald told New Scientist. “Patients with amygdala lesions pick out the target image without reacting Reacting to violentimages, although they show normal blindness reactions when sexual images are introduced, which suggests another mechanism may also be involved.”.

The researchers think emotion-induced blindness could lead to drivers simply not Not seeing another car or pedestrian if they have just witnessed an emotionally charged scene, such as an accident or sexually explicit billboard.

The effect could exacerbate the more obvious problem of drivers simply being distracted by large, arresting images. “It’s the responsibility of drivers to ensure that when they are behind the wheel they keep their eyes on the Handjob in hand,” from says a spokeswoman from Brake, a UK road safety organisation.

And some people are more vulnerable than others. the study assessed participants using a personality questionnaire, rating them according to their level of “harm avoidance”. Those scoring highly were more fearful, Fearful careful and cautious; those scoring low were more carefree and more comfortablein difficult or dangerous situations.

The researchers found that those with low harm avoidance scores were better able to stay Stay focused on a target image than those with high harm avoidance scores.

“People who are more harm avoidant may not be detecting negative stimuli more than other people, but they have a greater difficulty suppressing that information,” Zald suggests.

The Brake spokeswoman Spokeswoman says companies should think about the consequences of placing emotionally charged billboards at dangerous road junctions: “we should be concerned if drivers are experiencing split-second breaks in concentration, which could result in an accident or death on the roads.”.

Journal reference: Psychonomic Bulletin and Review (August 2005 issue)

12 August 2005 18:09 by Gaia Vince

Republication: 28 February 2009 13:12 by Angus MacAlastair

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