home   genetic news   bioinformatics   biotechnology   literature   journals   ethics   positions   events   sitemap
  HUM-MOLGEN -> Genetic News | search  

Sleep Deprivation Impairs Subsequent Learning

  February, 22 2007 9:52
your information resource in human molecular genetics
Sleep deprivation may impair the memory for subsequent experiences by altering the function of the hippocampus, reports a paper in the March 2007 issue of Nature Neuroscience. Previous research has shown that sleep occurring after an experience can be critical to learning and memory but this new study shows why sleep before an experience is also critical, and that memory systems do not function normally without it.

Matthew Walker and colleagues deprived people of a night's sleep and then asked them to observe and remember a large set of picture slides for a subsequent recognition test. Brain activity was monitored with fMRI -- functional magnetic resonance imaging -- while subjects viewed the slides. Following a full night of sleep, the subjects were then queried about the slides on the next day. The researchers found that sleep-deprived subjects showed decreased activity in the hippocampus -- a brain region important for memory -- relative to control subjects who were not sleep-deprived while viewing the pictures; sleep-deprived people also had poorer subsequent recall abilities. The relationship of activation in other brain areas to activation in the hippocampus was also altered, suggesting that sleep deprivation alters memory-encoding strategies.

Author contact:

Matthew Walker (Harvard Medical School, Boston, MA, USA)
E-mail: mwalker@hms.harvard.edu

Abstract available online.

(C) Nature Neuroscience press release.

Message posted by: Trevor M. D'Souza

print this article mail this article
Latest News
Variants Associated with Pediatric Allergic Disorder

Mutations in PHF6 Found in T-Cell Leukemia

Genetic Risk Variant for Urinary Bladder Cancer

Antibody Has Therapeutic Effect on Mice with ALS

Regulating P53 Activity in Cancer Cells

Anti-RNA Therapy Counters Breast Cancer Spread

Mitochondrial DNA Diversity

The Power of RNA Sequencing

‘Pro-Ageing' Therapy for Cancer?

Niche Genetics Influence Leukaemia

Molecular Biology: Clinical Promise for RNA Interference

Chemoprevention Cocktail for Colon Cancer

more news ...

Generated by News Editor 2.0 by Kai Garlipp
WWW: Kai Garlipp, Frank S. Zollmann.
7.0 © 1995-2023 HUM-MOLGEN. All rights reserved. Liability, Copyright and Imprint.