A story about a scientist turned nun meditator (her brief bio below) and her advice on retreat... enjoy!
http://www.heumanwrites.com/christineskarda/pdf/BD_Spring_09_p59_Skarda.pdf
Christine Skarda is a philosopher and scientific theorist whose professional career has spanned the fields of philosophy, neurophysiology, and cognitive science. She has both drawn on and contributed to the insights of these fields in her quest to understand the nature of perception.
This quest eventually propelled her out of the research laboratory and onto a meditation cushion, where Skarda turned to methods of inquiry drawn from the Tibetan Buddhist tradition to study the perceptual process from another angle. An ordained nun, Skarda has by now spent over a decade and a half in meditation retreat in the United States and India under the guidance of some of the greatest living members of the Tibetan Buddhist tradition including His Holiness the Dalai Lama and His Holiness Chetsang Rinpoche.
She returned to America in 2007 and continues her retreat in California. Occasionally she leaves retreat to lecture or teach to a diverse audience, offering her scientific background to Buddhists and her Buddhist insights to scientists and philosophers.