AUTHOR=Masataka Nobuo , Perlovsky Leonid , Hiraki Kazuo TITLE=Near-infrared spectroscopy (NIRS) in functional research of prefrontal cortex JOURNAL=Frontiers in Human Neuroscience VOLUME=9 YEAR=2015 URL=https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2015.00274 DOI=10.3389/fnhum.2015.00274 ISSN=1662-5161