Descartes' Error: Emotion, Reason, and the Human Brain is a 1994 book by neurologist António Damásio, in part a treatment of the mind/body dualism question. Damásio presents the "somatic marker hypothesis", a proposed mechanism by which emotions guide (or bias) behavior and decision-making, and positing that rationality requires emotional input. He argues that René Descartes' "error" was the dualist separation of mind and body, rationality and emotion.
The original paperback edition
J. Birtchnell, The Two of Me: The Rational Outer Me and The Emotional Inner Me (London 2003)
J. Panksepp, Affective Neuroscience (OUP 1998)