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:4/21/2017)... ... ... The Patient Advocacy Community of The Beryl Institute presented Eve DeVaro, Director, Patient ... Award in recognition of her extraordinary contributions to the field of patient advocacy ... Institute’s annual Patient Experience Conference on March 20 in Denver, Colorado. ...
(Date:4/21/2017)... Hong Kong (PRWEB) , ... April 21, 2017 , ... ... Printing (U3DP), the first 3D printing facility among higher education institutions in Hong Kong ... 3D printing, in terms of the range and quantity of facilities in Hong Kong. ...
(Date:4/21/2017)... ... April 21, 2017 , ... ... AWARE: A Week of Addiction and Recovery Education, from April 24 to April ... preventing substance use disorders. , The mission of AWARE is to instill ...
(Date:4/21/2017)... , ... April 21, 2017 , ... ... announced an exciting new partnership with the highly regarded and well renowned Asian ... highly innovative, myTAP & myTAP PAP Nasal Pillow Mask, and will stabilize and ...
(Date:4/21/2017)... Worcestershire, UK (PRWEB) , ... April 21, 2017 ... ... Award for Enterprise in the category of International Trade, the UK’s most prestigious ... in international trade, which represents 95% of total revenues and has grown by ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... April 20, 2017 Research and ... Biosimilar Pipeline and Market Prospects: Addressing Production Complexities Through ... their offering. ... "Global Biosimilar Pipeline and Market Prospects: Overcoming Production ... an in-depth assessment of the current trends in the ...
(Date:4/20/2017)... , April 20, 2017   ZappRx, Inc ., ... specialty drug prescribing process, today announced it closed $25 million ... a venture capital firm based in Seattle ... Qiming Venture Partners . The Series B round included participation ... round in 2014, and GV (formerly Google Ventures). ...
(Date:4/20/2017)... NeuroVive Pharmaceutical AB (Nasdaq Stockholm: ... preclinical results demonstrating anti-fibrotic effects with NV556, ... (NASH), in an additional well-validated experimental NASH ... previously shown similar anti-fibrotic effects in the ... present novel data demonstrating anti-fibrotic effects of ...
Breaking Medicine Technology: