Professor Frank Gunn-Moore, professor of molecular neurobiology in the university's School of Biology, is to take up a post as executive member of the Scottish Dementia Research Consortium (SDRC) which was launched this week.
The SDRC is a collaboration between researchers, doctors and the government.
Professor Gunn-Moore hailed the formation of the consortium as "a major step forward" in combining expertise on one of the major health issues "not just for Scotland, but globally".
He will join researchers from the universities of Aberdeen, Dundee, Edinburgh, Stirling, West of Scotland, and the University of the Highlands and Islands.
The SDRC will be co-chaired by Professor Emma Reynish, chair of dementia research at Stirling University and a consultant at NHS Fife, and Dr Peter Connelly, co-director of the Scottish Dementia Clinical Research Network, honorary senior lecturer in psychiatry at Dundee University and a consultant at NHS Tayside.