Navigation Links
The longer you're awake, the slower you get
Date:7/27/2012

Boston, MA Anyone that has ever had trouble sleeping can attest to the difficulties at work the following day. Experts recommend eight hours of sleep per night for ideal health and productivity, but what if five to six hours of sleep is your norm? Is your work still negatively affected? A team of researchers at Brigham and Women's Hospital (BWH) have discovered that regardless of how tired you perceive yourself to be, that lack of sleep can influence the way you perform certain tasks.

This finding is published in the July 26, 2012 online edition of The Journal of Vision.

"Our team decided to look at how sleep might affect complex visual search tasks, because they are common in safety-sensitive activities, such as air-traffic control, baggage screening, and monitoring power plant operations," explained Jeanne F. Duffy, PhD, MBA, senior author on this study and associate neuroscientist at BWH. "These types of jobs involve processes that require repeated, quick memory encoding and retrieval of visual information, in combination with decision making about the information."

Researchers collected and analyzed data from visual search tasks from 12 participants over a one month study. In the first week, all participants were scheduled to sleep 10-12 hours per night to make sure they were well-rested. For the following three weeks, the participants were scheduled to sleep the equivalent of 5.6 hours per night, and also had their sleep times scheduled on a 28-hour cycle, mirroring chronic jet lag. The research team gave the participants computer tests that involved visual search tasks and recorded how quickly the participants could find important information, and also how accurate they were in identifying it. The researchers report that the longer the participants were awake, the more slowly they identified the important information in the test. Additionally, during the biological night time, 12 a.m. -6 a.m., participants (who were unaware of the time throughout the study) also performed the tasks more slowly than they did during the daytime.

"This research provides valuable information for workers, and their employers, who perform these types of visual search tasks during the night shift, because they will do it much more slowly than when they are working during the day," said Duffy. "The longer someone is awake, the more the ability to perform a task, in this case a visual search, is hindered, and this impact of being awake is even stronger at night."

While the accuracy of the participants stayed the fairly constant, they were slower to identify the relevant information as the weeks went on. The self-ratings of sleepiness only got slightly worse during the second and third weeks on the study schedule, yet the data show that they were performing the visual search tasks significantly slower than in the first week. This finding suggests that someone's perceptions of how tired they are do not always match their performance ability, explains Duffy.


'/>"/>
Contact: Jessica Maki
jmaki3@partners.org
617-534-1603
Brigham and Women's Hospital
Source:Eurekalert

Related biology news :

1. Life span of ovarian grafts longer than expected
2. Longer sleep times may counteract genetic factors related to weight gain
3. Pain relief with PAP injections may last 100 times longer than a traditional acupuncture treatment
4. Global Surgical Devices Market Growth Driven by Improving Standards of Living and Longer Life Expectancies, Research Shows
5. Study suggests why some animals live longer
6. Hitting snooze on the molecular clock: Rabies evolves slower in hibernating bats
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/2/2016)... , Feb. 2, 2016  Based on ... Frost & Sullivan recognizes US-based Intelligent Retinal Imaging ... & Sullivan Award for New Product Innovation. IRIS, ... North America , is poised ... rapidly growing diabetic retinopathy market. The IRIS technology ...
(Date:1/28/2016)... Synaptics (NASDAQ: SYNA ), a leading developer of human interface ... 31, 2015. --> --> ... percent compared to the comparable quarter last year to $470.5 million. ... million, or $0.93 per diluted share. --> ... of fiscal 2016 grew 9 percent over the prior year period ...
(Date:1/22/2016)... , January 22, 2016 /PRNewswire/ ... announced the addition of the  "Global ... their offering. --> http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ... the  "Global Behavioral Biometric Market 2016-2020" ... Research and Markets ( http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ) ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... Texas (PRWEB) , ... February 10, 2016 , ... ... centers across three states, announced today the promotion of two long-standing principal investigators ... Chief of Family Medicine, Clinical Research and Development. , Dr. Laurence Chu, a ...
(Date:2/10/2016)... ... ... LATHAM, NEW YORK... Marktech Optoelectronics will feature their new high-speed ... Francisco’s Moscone Center from February 16-18, 2016, and at the healthcare-focused BiOS Expo on ... diode standard packages feature a TO-46 metal can with active areas of 1.0mm and ...
(Date:2/10/2016)... ... 10, 2016 , ... PatientCrossroads announces that the ... online PatientCrossroads platform, has exceeded both its one-year and overall recruitment goals since ... which seeks to advance understanding of the hereditary risks for certain kinds of ...
(Date:2/10/2016)... ... February 10, 2016 , ... ... has announced a new agreement with Singapore-based Global Stem Cells Network (GSCN) and ... Philippines, Thailand and Singapore in the latest adipose and bone marrow therapies. ...
Breaking Biology Technology: