Cerebral Cortex is continually expanding and evolving. The journal is now being published monthly, and the number and diversity of submitted papers continues to steadily increase. New methods in cellular and molecular biology are being increasingly applied to the compelling issues of evolution, development, anatomy and neuropysiology of the cerebral cortex and promise to lead to new concepts and insights into normal and patho- logical function. In addition, the explosion of noninvasive imaging studies is opening unprecedented opportunities to explore the nature and dynamics of human mentation. To meet the increasing demands of diversity and increased submissions and to insure timely and expert peer-review in this rapidly grow- ing field, starting with this issue Cerebral Cortex will be divided into three broad sections: (1) Genetic/Molecular/Development, (2) In Vitro and In Vivo Neuroanatomy/Neurophysiology, and (3) Noninvasive Human Imaging, each to be edited by a different Reviewing Editor. The section dealing with genetic, molecular and developmental issues will continue to be handled by Pasko Rakic, while the section dealing with neuroanatomical and neurophysiological studies of the cerebral cortex will be edited by Patricia Goldman-Rakic.

We are pleased to announce that Dr Steven Petersen of Washington University Medical School in St Louis has agreed to serve as the new Reviewing Editor for manuscripts in the field of cognitive neuroscience and neuroimaging of the human cerebrum. He brings to the journal broad expertise in both the methodological and scientific aspects of this fast-growing and exciting field.

As in the past, manuscripts should be submitted to the Editorial Office of Cerebral Cortex at Yale University School of Medicine in New Haven. Our Editorial Assistant, Lois Angelo, will distribute each paper to the most relevant Section Editor who will then select appropriate referees and ultimately be responsible for the final editorial decision. We believe that these organizational changes will increase both the efficiency as well as the expertise of the review process. We are looking forward to the further ascent of this large and dynamic field of modern neuroscience.