PMID: 12757897May 22, 2003Paper

Steady-state visual evoked potentials reveal frontally-mediated working memory activity in humans

Neuroscience Letters
William M PerlsteinA Keil

Abstract

Steady-state visual evoked potentials (SSVEPs) reflect power changes at the stimulus driving frequency and have been used to assess brain activity reflecting cognitive processing. Only one study has demonstrated SSVEP modulation associated with working memory (WM), and none have compared the spatial localization of SSVEP modulations during WM performance with other brain imaging methods. Here we examined WM-related activity recorded with dense-array SSVEPs, analyzed using low resolution electromagnetic tomography, and compared the results to our previous findings using functional magnetic resonance imaging (fMRI). WM was associated with increased SSVEP activity over the right dorsolateral prefrontal cortex, paralleling our previous fMRI findings. Frontal WM-related SSVEP power correlated selectively with task performance. These results demonstrate the utility of SSVEPs for studying representational aspects of cognition.

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Citations

Aug 26, 2004·Journal of the International Neuropsychological Society : JINS·William M PerlsteinRichard W Briggs
Sep 3, 2010·Journal of Cognitive Neuroscience·Matthias J WieserAndreas Keil
Mar 7, 2006·BMC Neuroscience·Jonathan WilliamsAbderrahim Oulhaj
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Nov 11, 2015·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Folkert K HornJan Kremers
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