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Vision 2017, 1(1), 7; doi:10.3390/vision1010007

The Development and Aging of the Magnocellular and Parvocellular Visual Pathways as Indicated by VEP Recordings between 5 and 84 Years of Age

1
Department of Physiology, Faculty of Medicine, University of Szeged, Dóm tér 10, 6720 Szeged, Hungary
2
Laboratory for Perception & Cognition and Clinical Neuroscience, Nyírő Gyula Hospital, Lehel utca 59, 1135 Budapest, Hungary
3
Department of Ophthalmology, Faculty of Medicine, University of Szeged, Korányi fasor 10-11, 6720 Szeged, Hungary
*
Author to whom correspondence should be addressed.
Academic Editor: J. Vernon Odom
Received: 4 July 2016 / Revised: 26 September 2016 / Accepted: 8 October 2016 / Published: 17 October 2016
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Abstract

It is well known that pattern reversal visual evoked potentials (VEPs) are age-sensitive. Through the use of this technique, it is possible to assess both of the major visual pathways (i.e., the magnocellular and parvocellular ones) in terms of function and development. What developmental path these pathways follow, and if they develop/age in parallel across the human lifespan is a matter of ongoing debate, yet, only a few VEP studies have dealt with this issue. This cross-sectional study examined a sample of 115 healthy volunteers aged 5 to 84 years. Beyond the standard checkerboard pattern reversal stimulation at 97% contrast, we recorded pattern-reversal VEPs at 6% contrast to selectively stimulate the M pathway and isoluminant red and green checkerboard stimulation was also used to selectively stimulate the P pathway. Our results do not support the developmental advantage of any of the pathways. The development of both pathways appear to take a remarkably long time (well into the 30s), and the signs of aging become marked over 50 years of age, especially in the case of the magnocellular pathway. View Full-Text
Keywords: pattern-reversal VEP; development; aging; magnocellular; parvocellular pattern-reversal VEP; development; aging; magnocellular; parvocellular
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Benedek, G.; Horváth, G.; Kéri, S.; Braunitzer, G.; Janáky, M. The Development and Aging of the Magnocellular and Parvocellular Visual Pathways as Indicated by VEP Recordings between 5 and 84 Years of Age. Vision 2017, 1, 7.

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