Cogito Ergo and Then Some

Though reluctant to declare mind-body dualism defunct, professional mind-watchers’ views have come a long way since Descartes’—sort of, two new books suggest.

Touching a Nerve: The Self as Brain. Patricia Churchland. 304 pages. W. W. Norton.

A Very Short Tour of the Mind: 21 Short Walks Around the Human Brain. Michael Corballis. 106 pages. Overlook Press.