He has sat on editorial boards and reviewed for specialist journals (e.g., Brain Research, International Journal of Psychophysiology, Journal of Cognitive Neuroscience, NeuroReport). He has published articles from collaborations with thousands of researchers. As of June 2014, according to Google Scholar no collaborators are listed as co-authors and citations totalled 62182 (17578 since 2013) resulting in an h-index of 128 (64 since 2009), being amongst the 0.5% most-cited scientists still alive, the most-cited scientist in Finnish and Estonian history. Noteworthy is that Teuvo Kohonen also vies for the title of most-cited Finnish scientist.