Andrew Carnie published by University of Arizona, has written an informative book European and Middle Eastern Folk Dance by Andrew Carnie You can find, read this open source book here https://opentextbooks.library.arizona.edu/folkdance/ Andrew Carnie has also created, over the years, an amazing blog documenting directions, videos, lyrics, andmusic links to all of the folk dances he has had some exposure to by way of teachers and worshops inside the International Folk Dance movement. His effort was partly inspired by the amazing body of dance video Karen and Bill Faust have done over the years, now an integral part of their AZ ifd information collection.
Printed articles:
Dancing and the Brain 2003 Harvard
Dancing and the Brain (Harvard) winter 2015