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J Neurophysiol. 2015 Oct;114(4):2132-43. doi: 10.1152/jn.00457.2015. Epub 2015 Jul 8.

Effect of mechanical tactile noise on amplitude of visual evoked potentials: multisensory stochastic resonance.

Author information

1
Facultad de Psicología, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico;
2
Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico;
3
Institute of Clinical Neuroscience, Heinrich Heine University, Düsseldorf, Germany;
4
Unidad de Trastornos del Movimiento y Sueño (TMS), Hospital General Dr. Manuel Gea González/IFC-UNAM, Mexico City, Mexico; and.
5
Department of Neurology, University of Freiburg, Freiburg, Germany.
6
Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico; elias.manjarrez@correo.buap.mx.

Abstract

The present investigation documents the electrophysiological occurrence of multisensory stochastic resonance in the human visual pathway elicited by tactile noise. We define multisensory stochastic resonance of brain evoked potentials as the phenomenon in which an intermediate level of input noise of one sensory modality enhances the brain evoked response of another sensory modality. Here we examined this phenomenon in visual evoked potentials (VEPs) modulated by the addition of tactile noise. Specifically, we examined whether a particular level of mechanical Gaussian noise applied to the index finger can improve the amplitude of the VEP. We compared the amplitude of the positive P100 VEP component between zero noise (ZN), optimal noise (ON), and high mechanical noise (HN). The data disclosed an inverted U-like graph for all the subjects, thus demonstrating the occurrence of a multisensory stochastic resonance in the P100 VEP.

KEYWORDS:

cross-modal stochastic resonance; multisensory stochastic resonance; stochastic resonance; tactile noise; visual

PMID:
26156387
PMCID:
PMC4595608
DOI:
10.1152/jn.00457.2015
[Indexed for MEDLINE]
Free PMC Article

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