Weatherford Democrat

Community News Network

January 9, 2013

Slate: What's up with 'crazy eyes'?

For the first time, police officers on Monday gave a public moment-by-moment account of accused Aurora shooter James Holmes' arrest, as part of a hearing that touched on whether Holmes is mentally fit to stand trial. Officer Jason Oviatt described Holmes as "very relaxed" after the shooting, noting that Holmes had extremely dilated pupils. Are dilated pupils a sign of mental illness?

Not a good one. Dilation of the pupils can reflect not just the lighting conditions in a room but the thoughts and feelings of a person, mentally ill or not. For example, dilated pupils can indicate sexual arousal. Psychologists sometimes study the expansion and contraction of the pupils to find an objective measure of the mind's inner processes, in something called pupillometry. This practice has been used to study everything from racial bias to sexual preference to what happens when the mind puzzles over a difficult math problem.

However, while pupillometry has been used to study aspects of mental illness, including schizophrenia, and while psychologists began observing pupil dilation among the mentally ill more than 100 years ago, pupil dilation on its own is not a good indicator of psychosis or other mental illness. Pupil dilation is regulated by the sympathetic nervous system, the part of the body that controls our fight-or-flight response. So even when psychosis causes changes in pupil dilation, such as by triggering an excited state of fear or anger, the dilation itself is identical to dilation in the non-mentally ill. Moreover, just as with sane people, the pupils return to normal once the state is over.

Dilation of the pupils can also be a side effect of using certain drugs. For example, LSD and mescaline both cause pupil dilation. Some people who suffer from mental illness may find themselves with dilated pupils caused by treatment with prescribed antipsychotic medications.

Text Only
Community News Network
  • American sunscreens need an upgrade

    The last time a new sunscreen ingredient came on the U.S. market, the Y2K bug was threatening to destroy our way of life. Intel had just introduced the Pentium III processor, featuring an amazing 500 MHz of computing power.

    April 24, 2014

  • 20140424-AMX-COFFEE24.jpg Coffee growers' prayers for rain met with threat of deluge

    Brazil's drought made arabica coffee this year's best-performing commodity. Now, farmers are facing a downpour that is once more threatening crops.

    April 24, 2014 1 Photo

  • Celebrity quack moms are a terrible influence on everyday parents

    On April 15, the actress Alicia Silverstone released a book called "The Kind Mama: A Simple Guide to Supercharged Fertility, a Radiant Pregnancy, a Sweeter Birth, and a Healthier, More Beautiful Beginning." It's chock-full of attachment parenting lessons and dangerous misinformation.

    April 24, 2014

  • Affirmative action ruling challenges colleges seeking diversity

    The U.S. Supreme Court's support of Michigan's ban on race-based affirmative action in university admissions may spur colleges to find new ways to achieve diversity without using racial preferences.

    April 23, 2014

  • A 'wearable robot' helps her walk again

    Science is about facts, numbers, laws and formulas. To be really good at it, you need to spend a lot of time in school. But science is also about something more: dreaming big and helping people.

    April 23, 2014

  • Cuba is running out of condoms

    The newest item on Cuba's list of dwindling commodities is condoms, which are now reportedly in short supply. In response, the Cuban government has approved the sale of expired condoms.

    April 23, 2014

  • The waffle taco's biggest enemy isn't McDonald's. It's consumer habits.

    Gesturing to Taco Bell, Thompson said McDonald's had "not seen an impact relative to the most recent competitor that entered the [breakfast] space," and that new competition would only make McDonald's pursue breakfast more aggressively.

    April 23, 2014

  • Screen Shot 2014-04-22 at 4.42.47 PM.png VIDEO: Leopard attacks crowd in India

    A leopard caused panic in the city of Chandrapur when it sprung from the roof of a house and charged at rescue workers.

    April 22, 2014 1 Photo

  • The top 12 government programs ever

    Which federal programs and policies succeed in being cost-effective and targeting those who need them most? These two tests are obvious: After all, why would we spend taxpayers' money on a program that isn't worth what it costs or helps those who do not need help?

    April 22, 2014

  • In cuffs... 'Warlock' in West Virginia accused of sexual assault

    Police in West Virginia say a man claiming to be a “warlock” used promises of magical spells to lure children into committing sexual acts with him.

    April 22, 2014 1 Photo

Must Read
Top News
House Ads
AP Video
Poll

The City of Weatherford is considering an ordinance that would ban smoking inside restaurants and enclosed areas where food is prepared, sold or consumed. Do you agree with this proposal?

Yes
No
Undecided
Don't care
     View Results