This volume contains the presentations resulting from a three day world symposium held at Post Falls, Idaho, U.S.A., on May 16-19, 1990, entitled `The Neurobiology of the Locus Coeruleus'. The conference answered a definite need for establishing a focus amid the rapidly accumulating information available. Leading scientists had pursued valuable research work on the neurochemical anatomy of the LC, the membrane properties of neurons, and many other facets of this important neuroscientific area. This volume sheds light not only on this pioneering research work, but also on some of the major discrepencies which had arisen from these fast developments and the large amounts of information surfacing therefrom. Contributors gathered to present the fruits of their personal research efforts and to pool common ideas to stimulate and challenge those presently engaged in research on the LC. An excellent book, essential to neuroscientists and neurophysiologists involved with the locus coeruleus.