Connectivity Analysis of Novelty Process in Habitual Short Sleepers

Details

• Personal Author:
  Babajani-Feremi A ; Drake CL ; Gumenyuk V ; Roth T ; Soltanian-Zadeh H
• Description:
  Neurophysiological processes underlying auditory memory and attention are impaired in habitually short sleepers. The aim of this study was to use dynamic causal modeling (DCM) to study the mechanisms of these impairments in short sleepers. Eight normal sleepers (total sleep time (TST) = 7-8 h) and nine habitual short sleepers (TST = 6 h) participated. The time in bed was increased from habitual (= 6 h) to extended (approximately 8.5 h) for one week in the short sleep group. Event related potentials (ERPs) were collected using an auditory novelty task in "IGNORE" and "ATTEND" conditions. Fourteen DCM models were considered using different configurations of connections among the following six areas: left and right primary auditory cortices, superior temporal gyri (STG), and inferior temporal gyri (IFG). After fitting the ERPs to the 14 models (separately for the IGNORE and ATTEND conditions), the best model (across subjects) was chosen using the Bayesian model comparison. For both conditions, the connection from right-STG to right-IFG for normal sleepers was significantly greater than habitual short sleepers. This connection did not differ in habitual short sleepers before and after one week of extended sleep time. This connection for normal sleepers was not significantly greater than the habitual short sleepers after one week of extended sleep. These results show that the deficiency of novelty processing, seen in short sleepers, can be explained by the differences in connectivity of the pathway between frontal and temporal brain areas as compared to the normal sleepers. In addition, one week of extended time in bed was not enough to fully normalize this neuronal pathway between STG and IFG in short sleepers. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety Sleep Sleep Initiation And Maintenance Disorders
• Keywords:
  Auditory Oddball Auditory System Author Keywords: Electroencephalography (EEG) Brain Function Dynamic Causal Modelling (DCM) Neural Networks Physiological Effects Short Sleepers Sleep Disorders Task Performance
• ISSN:
  1053-8119
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Michigan ; Missouri ; OSHA Region 5 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  63
• Issue:
  3
• NIOSHTIC Number:
  nn:20055572
• Citation:
  Neuroimage 2012 Nov; 63(3):1001-1010
• Contact Point Address:
  Abbas Babajani-Feremi, Washington University School of Medicine, Mallinckrodt Institute of Radiology, 510 S. Kingshighway, Suite 3353, St. Louis, MO 63110, USA
• Email:
  abbasbf@pcg.wustl.edu
• Federal Fiscal Year:
  2013
• Performing Organization:
  Henry Ford Health System, Detroit, Michigan
• Peer Reviewed:
  True
• Start Date:
  20110901
• Source Full Name:
  NeuroImage
• End Date:
  20140831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:bb9cb40336980258eb30854ec3983cce4214bc15e5126d651a4f7f3eecfc26c4ae46efd965d35f239c7f57b1896fb1434fd3bff89f49706958c0a67fca4e2405
• Download URL:
  https://stacks.cdc.gov/view/cdc/213396/cdc_213396_DS1.pdf
• File Type:
  [PDF - 1.72 MB ]