Skip Navigation



Cerebral Cortex Advance Access published online on February 8, 2006
Cerebral Cortex, doi:10.1093/cercor/bhj130
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
17/1/100    most recent
bhj130v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Lippé, S.
Right arrow Articles by Lassonde, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lippé, S.
Right arrow Articles by Lassonde, M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Article

Electrophysiological Markers of Visuocortical Development

S. Lippé 1, M. -S. Roy 2, C. Perchet 3, and M. Lassonde 1 *

1 Centre de recherche, Hôpital Sainte-Justine, Montréal, QC, Canada; Département de Psychologie, Université de Montréal, Montréal, QC, Canada
2 Centre de recherche, Hôpital Sainte-Justine, Montréal, QC, Canada; Département d'Ophtalmologie, Hôpital Ste-Justine, Montréal, QC, Canada
3 Institut National de la Santé et de la Recherche Medicale Equipe Mixte, EMI342, Lyon F-69677, France; University Lyon1, Villeurbanne F-69622, France

* To whom correspondence should be addressed.
M. Lassonde, E-mail: maryse.lassonde{at}umontreal.ca


  Abstract

The development of noninvasive techniques for the assessment of functional brain maturation is critical. The present study analyzed 63 babies' and children's (27 days to 5.5 years) cerebral responses to a pattern-reversal visual stimulation using high-density (128 electrodes) electrophysiological recordings. Developmental data were further compared with those of young adults (n = 16). Tremendous changes in pattern visual evoked potentials (pVEPs) morphology were observed between 7 and 24 months characterized by the emergence of negative components labeled "N70" and "N145" and the reduction of the P100 amplitude. The adult pattern of response appears from 24 months onward. Spectral density values show an increase of higher frequencies with age. Coherence values show a reduction between 3 and 23 months of age as well as a further increase toward adulthood between areas implicated in visual processing. These results are discussed in light of developmental features such as synaptogenesis, myelination, and neuronal networks refinement.

Keywords: coherence analysis; functional networks; spectral density; visual evoked potentials.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J. Neurosci.Home page
S. Telkemeyer, S. Rossi, S. P. Koch, T. Nierhaus, J. Steinbrink, D. Poeppel, H. Obrig, and I. Wartenburger
Sensitivity of Newborn Auditory Cortex to the Temporal Structure of Sounds
J. Neurosci., November 25, 2009; 29(47): 14726 - 14733.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
J. Dubois, G. Dehaene-Lambertz, C. Soares, Y. Cointepas, D. Le Bihan, and L. Hertz-Pannier
Microstructural Correlates of Infant Functional Development: Example of the Visual Pathways
J. Neurosci., February 20, 2008; 28(8): 1943 - 1948.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.