Navigation Links
Study shows that sleep deprivation can negatively affect information processing
Date:10/31/2009

Westchester, Ill. A study in the Nov.1 issue of the journal Sleep shows that sleep deprivation causes some people to shift from a more automatic, implicit process of information categorization (information-integration) to a more controlled, explicit process (rule-based). This use of rule-based strategies in a task in which information-integration strategies are optimal can lead to potentially devastating errors when quick and accurate categorization is fundamental to survival.

Results show that sleep deprivation led to an overall performance deficit on an information-integration category learning task that was held over the course of two days. Performance improved in the control group by 4.3 percent from the end of day one to the beginning of day two (accuracy increased from 74 percent to 78.3 percent); performance in the sleep-deprived group declined by 2.4 percent (accuracy decreased from 73.1 percent to 70.7 percent) from the end of day one to the beginning of day two.

According to co-principal investigators W. Todd Maddox, PhD, professor of psychology, and David M. Schnyer, PhD, associate professor of psychology at the Institute for Neuroscience at the University of Texas in Austin, fast and accurate categorization is critical in situations that could become a matter of life or death. However, categorization may become compromised in people who often experience sleep deprivation in fast-paced, high pressure roles such as doctors, firefighters, soldiers and even parents. Many tasks performed on a daily basis require information-integration processing rather than rule-based categorization. Examples include driving, making a medical diagnosis and performing air-traffic control.

Maddox and Schnyer were surprised to find that the source of the information-integration deficit was a subgroup of sleep-deprived individuals who shifted from information-integration strategies when rested to rule-based strategies when sleep deprived. Sleep-deprived participants who used information-integration strategies in both sessions showed no drop in performance in the second session, mirroring the behavior of control participants.

Some categorization problems involve conscious, explicit processing that relies heavily on frontal brain systems. Processing in these systems is known to be adversely affected by sleep deprivation. Other categorization problems involve non-conscious, implicit processing that relies heavily on procedural learning and the striatum, Maddox and Schnyer stated in an e-mail message. The current study suggests that processing in these systems is minimally affected by sleep deprivation, but that performance can suffer because sleep deprivation leads many individuals to rely on explicit processes when implicit processes are necessary.

The study involved 49 West Point Cadets who performed an information-integration categorization task twice, separated by a 24-hour period, with or without sleep between sessions. Twenty-one cadets were placed in a sleep deprivation group (16 men, 5 women; mean age 20.3 years) while 28 were designated as controls (23 men, 5 women; mean age 19.5 years). The sleep-deprived group was monitored to ensure that they did not sleep, while the control group was permitted to obtain a normal nights sleep.

Control and sleepless participants were divided into two subgroups depending upon whether each individuals day-one data was best fit by an information-integration model or a rule-based model. For the control group, 14 participants data were best fit by an information-integration model and nine participants data were best fit by a rule-based model. For the sleepless group, 13 participants data were best fit by an information-integration model and seven participants data were best fit by a rule-based model.

The study cites previous research suggesting that differences in cortical white matter predict cognitive vulnerability to the effects of sleep deprivation. Based on previous studies performed at their lab, the authors hypothesize that people may be able to prevent falling back on rule-based categorization when sleep deprived by performing a secondary task that activates the rule-based process.


'/>"/>

Contact: Kelly Wagner
kwagner@aasmnet.org
708-492-0930
American Academy of Sleep Medicine
Source:Eurekalert

Related medicine news :

1. Study shows that sleep disturbances improve after retirement
2. Henry Ford Hospital study: A MRSA strain linked to high death rates
3. Large Study of Anemia Treatment in Chronic Kidney Disease Patients Not on Dialysis Published in the New England Journal of Medicine Failed to Meet Primary Efficacy Endpoints
4. Drake Center is Site for $3.6 Million NIH Grant to Study Mental Rehearsal that Improves Motor Skills in Stroke Patients
5. BetterInvesting Magazine Releases January Stock to Study and Undervalued Stock Choices for Investors Informational and Educational Use
6. Study reveals possible link between IBD therapy and skin cancer
7. New EPA Rodent Study Finds No Low-Dose BPA Effects on Reproductive Function or Behavior
8. U-M study uncovers key to how triggering event in cancer occurs
9. Finding Ways for Disabled People to Participate in Research is Goal of Case Western Reserve University Nursing School Study
10. Pitt study shows linkage between teen girls weight and sexual behavior
11. Diet, Exercise Thwart Diabetes: Study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... ... announced its strategic partnership with Connance, a healthcare industry leader providing predictive ... proven, proprietary technology combine to provide health systems, hospitals and ambulatory surgical ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... Pixel Film ... Pro X. , "Film editors can give their videos a whole new perspective by ... Austin - CEO of Pixel Film Studios. , ProSlice Levels contains over 30 ...
(Date:6/25/2016)... ... 25, 2016 , ... Austin residents seeking Mohs surgery services, can now turn ... to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey brings specialization ... selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under the direction ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as a method ... —Johnson is one of the first doctors to perform the treatment. Orthobiologics are ...
(Date:6/24/2016)... ... ... June 19, 2016 is World Sickle Cell Observance Day. In an effort to ... treatments, Serenity Recovery Center of Marne, Michigan, has issued a pain management ... (SCD) is a disorder of the red blood cells, which can cause episodes of ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Research and ... Market for Companion Diagnostic Tests" report to their offering. ... for Companion Diagnostics The World Market for ... personalized medicine diagnostics. Market analysis in the report includes the ... Market (In Vitro Diagnostic Kits) by Region (N. America, EU, ...
(Date:6/24/2016)... 24, 2016   Pulmatrix, Inc ., (NASDAQ: ... inhaled drugs, announced today that it was added to ... its comprehensive set of U.S. and global equity ... an important milestone for Pulmatrix," said Chief Executive Officer ... of our progress in developing drugs for crucial unmet ...
(Date:6/24/2016)... 2016  Arkis BioSciences, a leading innovator in ... durable cerebrospinal fluid treatments, today announced it has ... is led by Innova Memphis, followed by Angel ... investors.  Arkis, new financing will accelerate the commercialization ... release of its in-licensed Endexo® technology. ...
Breaking Medicine Technology: