Comprehensive exposé, by leading neuroscientists, of current knowledge on the neurotransmitter acetylcholine in the cerebral cortex. All aspects of the subject are covered, from its most elementary, at the molecular and cellular levels, to its systemic and holistic implications, including its role in cognition and involvement in human diseases and therapeutics. The twenty-two chapters are grouped under four main headings : I. Functional Morphology of the Acetylcholine Innervation in Cerebral Cortex (Including Hippocampus); II. Modes of Action of Acetylcholine in the Cerebral Cortex; III. Cortical Properties and Functions Modulated by Acetylcholine, and IV. Clinical, Pathological and Therapeutic Implications. This broad perspective updates the reader on recent advances and future trends in the study of a major neuromodulatory system in brain.