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Post(s) tagged with "workplace"
Acute or chronic sleep deprivation resulting in increased feelings of fatigue is one of the leading causes of workplace incidents and related injuries. More incidents and performance failures, such as automobile accidents, occur in the mid-afternoon hours known as the “post-lunch dip.” The post-lunch dip typically occurs from 2-4 p.m., or about 16-18 hours after an individual’s bedtime from the previous night.
A new study from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute shows that exposure to certain wavelengths and levels of light has the potential to increase alertness during the post-lunch dip. The research was a collaboration between Mariana Figueiro, LRC Light and Health Program director and associate professor at Rensselaer, and LRC doctoral student Levent Sahin. Results of the study titled “Alerting effects of short-wavelength (blue) and long-wavelength (red) lights in the afternoon,” were recently published in Physiology & Behavior journal.
The collaboration between Figueiro and Sahin lays the groundwork for the possible use of tailored light exposures as a non-pharmacological intervention to increase alertness during the daytime. Figueiro has previously conducted studies that show that light has the potential to increase alertness at night. Exposure to more than 2500 lux of white light at night increases performance, elevates core body temperature, and increases heart rate.
In most studies to date, the alerting effects of light have been linked to its ability to suppress melatonin. However, results from another study led by Figueiro demonstrate that acute melatonin suppression is not needed for light to affect alertness during the nighttime. They showed that both short-wavelength (blue) and long-wavelength (red) lights increased measures of alertness but only short-wavelength light suppressed melatonin. Melatonin levels are typically lower during the daytime, and higher at night.
Figueiro and Sahin hypothesized that if light can impact alertness via pathways other than melatonin suppression, then certain wavelengths and levels of light might also increase alertness during the middle of the afternoon, close to the post-lunch dip hours.
The team found that, compared to remaining in darkness, exposure to red light in the middle of the afternoon significantly reduces power in the alpha, alpha theta, and theta ranges. Because high power in these frequency ranges has been associated with sleepiness, these results suggest that red light positively affects measures of alertness not only at night, but also during the day. Red light also seemed to be a more potent stimulus for modulating brain activities associated with daytime alertness than blue light, although they did not find any significant differences in measures of alertness after exposure to red and blue lights. This suggests that blue light, especially higher levels of blue light, could still increase alertness in the afternoon. It appears that melatonin suppression is not needed for light to have an impact on objective measures of alertness.
“Our study suggests that photoreceptors other than the intrinsically photosensitive retinal ganglion cells respond to light for the arousal system,” said Figueiro. “Future research should look into the spectral sensitivity of alertness and how it changes over the course of 24 hours.”
Sahin, who has more than 10 years of experience in railway engineering, was interested in this study from a transportation safety perspective, and what the results could mean to the transportation industry. “Safety is a prerequisite and one of the most important quality indicators in the transportation industry,” said Sahin. “Our recent findings provided the scientifically valid underpinnings in approaching fatigue related safety problems in 24 hour transportation operations.”
From the present results, it is not possible to determine the underlying mechanisms contributing to light-induced changes in alertness because the optical radiation incident on the retina has multiple effects on brain activity through parallel neural pathways. According to Figueiro, that is an area that she would like to explore in future research.
We will see prescient business leaders seeking to help workers fight the post-lunch dip by proving rooms with the appropriate levels of blue or red light.
Designed by Matthew Plumstead
Taking only the most essential components of a workstation and adding a third component- the daybed, this workstation provides maximum flexibility in a very modest footprint. Standing, sitting, and reclining are each given an equal and accommodating space, making a strong statement about new behaviors and postures in the office.
One of the prototypes dreamed up by Cranbrook design students in a project with Herman Miller called Rest and Relaxation In the Workplace.
[…] the time and place of work has become a very important temporal and spacial location of online news consumption for a fairly large number of people who get the news online. Whereas in the case of traditional media — like print newspapers, television newscasts, radio newscasts — you would get the news before or after work, or going to and from work, but not at the time and place of work. Now, a sizable proportion of the people who get the news online get the news at work. And that has been changing how we get the news, what kind of news we get when we’re at work, and whom we talk to — the person, the people we talk to — when we talk to people about the news at work.
So, for instance, just to give you some examples, when people are at work, they tend to spend first some time, the first time that they visit the news sites during the day, or a number of news sites during the day, they tend to spend time looking at those sites in a routine, comprehensive fashion: They scan the home pages, they click on some stories, and so on and so forth. And then any subsequent visits after that are of much shorter duration, more focused on particular issues. Usually not clicking after that, just browsing on the homepage, looking at a particular story. A coworker said, “Oh, there is a big fire in this neighborhood; oh, have you looked at these poll results from that kind of competition.” People go online, check 15, 20 seconds, maybe a minute — maybe they will look at the first paragraph of the story, then they leave the site.
And the other thing that has happened is that because of the social norms of the workplace, usually it’s not well seen to have conversations with coworkers about politically, for instance, sensitive, or culturally sensitive or contentious issues. And because the people we talk to tend to influence the kinds of news that we get — sometimes to the point that we look at particular news stories because we anticipate having conversations about those stories with, in this case, the people with whom we work.
That tends to steer people away from the consumption of politically sensitive topics, and move them towards consumption of sports stories, stories celebrity stories — topics that are more innocuous, and lighter in terms of workplace conversations. And that also marks an interesting shift to people who for example work in a home environment, in a home office, versus the people who work in an office environment, with many other coworkers. The people who tend to work in an office environment, with other coworkers, and get the news online at work, tend to identify the consumption of online news with the workplace. So when they leave the office, right, because there is that symbolic association between the consumption of news and the workplace, they don’t want, when they’re at home, or it’s the weekend, they don’t want to get the news online. They’re less predisposed, because, at home, it’s not work, so they shouldn’t be doing work-related stuff. Versus the people who work in the home environment, they keep checking news sites after they finish working, right — or, at least, they have a higher chance of doing that — and also spending time looking at news during the weekend.
So these are some of the ways in which the consumption of online news at work has changed some of the habitualized, some of the routine patterns of news consumption that we have seen in traditional media. Sometimes major changes, sometimes intensifying pre-existing habits, and sometimes conforming to what we have known before. For instance, this issue that the people we talk to, the most proximate social relations, are a major factor in shaping what news we get and the kinds of things we talk about.
- Pablo Boczkowski, cited by Megan Garber in Professor Pablo Boczkowski on news consumption — and how when you read affects what you read
I used to read the paper — the paper kind — at the kitchen table years ago, in the morning. And I would talk about it with people at work, family, etc.
When I was transformed by blogging into a ‘public intellectual’ things changed. I began to read the news online, and write about nearly everything that interests me, which is a fairly broad spectrum of things. That’s why I started writing Underpaid Genius originally: to write about things that weren’t primarily about technology.
But things have blurred for me, since everything is so connected. The revolt in Libya is simultaneously about politics, social media, and food prices. Everything is connected.
And as I have progressed (or blurred) from being almost exclusively an analyst/consultant for social technologies into more of a web anthropologist and futurist, it is more sensible to talk about how everything is connected. There are no externalities: everything is a factor in the global system.
So the ‘news’ has moved to the forefront, and I consume it all as part of my ‘work’. But unlike most people, it is my ‘job’ to talk about the connections, to hypothesize the way that social networks are changing everyday life, how modern media has disrupted political discourse, and how the civil unrest of the Arab Spring and the London riots leveraged social media, but were not engendered by it.
I never back off from subjects that are contentious, but I have divided my writing into two blogs: technology and other passions. There’s a constant tension about how to write about certain topics, and sometimes I write about something at both, coming at it from tech versus policy angles.
But then I don’t have a workplace, and as a result I don’t have to share an office that is divided into Tea Partiers and progressives, like many Americans do.
Web anthropologist, futurist, author. My focus is the future, and the tectonic forces pushing business, media, and society into an unclear and accelerating future. more.
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