Document Detail

Habituation of visual evoked responses in neonates and fetuses: a MEG study.
MedLine Citation:
PMID:  22483416     Owner:  NLM     Status:  MEDLINE    
In this study we aimed to develop a habituation paradigm that allows the investigation of response decrement and response recovery and examine its applicability for measuring the habituation of the visually evoked responses (VERs) in neonatal and fetal magnetoencephalographic recordings. Two paradigms, one with a long and one with a short inter-train interval (ITI), were developed and tested in separate studies. Both paradigms consisted of a train of four light flashes; each train being followed by a 500Hz burst tone. Healthy pregnant women underwent two prenatal measurements and returned with their babies for a neonatal investigation. The amplitudes of the neonatal VERs in the long-ITI condition showed within-train response decrement. An increased response to the auditory dishabituator was found confirming response recovery. In the short-ITI condition, neonatal amplitude decrement could not be demonstrated while response recovery was present. In both ITI conditions, the response rate of the cortical responses was much lower in the fetuses than in the neonates. Fetal VERs in the long-ITI condition indicate amplitude decline from the first to the second flash with no further decrease. The long-ITI paradigm might be useful to investigate habituation of the VERs in neonates and fetuses, although the latter requires precaution.
Tamara Matuz; Rathinaswamy B Govindan; Hubert Preissl; Eric R Siegel; Jana Muenssinger; Pamela Murphy; Maureen Ware; Curtis L Lowery; Hari Eswaran
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2012-03-16
Journal Detail:
Title:  Developmental cognitive neuroscience     Volume:  2     ISSN:  1878-9307     ISO Abbreviation:  Dev Cogn Neurosci     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-06-06     Completed Date:  2012-09-11     Revised Date:  2014-09-20    
Medline Journal Info:
Nlm Unique ID:  101541838     Medline TA:  Dev Cogn Neurosci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  303-16     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
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MeSH Terms
Acoustic Stimulation / methods
Analysis of Variance
Brain / embryology,  growth & development*,  physiology
Evoked Potentials, Visual / physiology*
Fetus / physiology*
Gestational Age
Habituation, Psychophysiologic / physiology*
Infant, Newborn
Magnetoencephalography / methods
Photic Stimulation / methods
Reaction Time
Grant Support
R01 NS036277/NS/NINDS NIH HHS; R01 NS036277-10/NS/NINDS NIH HHS; R01-NS36277-10/NS/NINDS NIH HHS

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