VISION,CENTRALTime delays in the β/γ cycle operate on the level of individual neuronsWang, Penga b; Havenith, Martha N.a; Best, Michaa; Gruetzner, Christinea; Singer, Wolfa b; Uhlhaas, Petera; Nikolić, Dankoa bAuthor Information aDepartment of Neurophysiology, Max-Planck Institute for Brain Research bFrankfurt Institute for Advanced Studies, Wolfgang Goethe University, Germany Correspondence to Dr Danko Nikolić, Department of Neurophysiology, Max Planck Institute for Brain Research, Deutschordenstr. 46, 60528 Frankfurt am Main, Germany Tel: +49 69 96769 736; fax: +49 69 96769 327; e-mail: [email protected] Received 19 March 2010 accepted 13 April 2010 Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Website (www.neuroreport.com). NeuroReport: August 4, 2010 - Volume 21 - Issue 11 - p 746-750 doi: 10.1097/WNR.0b013e32833ae9ed Buy SDC Metrics Abstract Recent studies suggested that small time delays among synchronized responses can convey information about visual stimuli. We compared these delays across different types of synchronized signals: single-unit action potentials, multi-unit action potentials, and local field potentials obtained with invasive recordings from cat visual cortex and magnetoencephalographic and electroencephalographic signals recorded from the scalp of human beings. In the signals that reflected more localized sources, time delays were larger and more selective for stimulus properties than in the signals that reflected more large-scale sources. The results suggest that a cortical code for stimulus features that exploits time delays operates predominantly across individual neurons rather than across larger anatomical structures such as brain areas. © 2010 Lippincott Williams & Wilkins, Inc.