Clinically relevant basic science studies of gender differences and sex hormone effects. Ovarian steroids produce a variety of effects on the brain, influencing diverse nonreproductive processes such as cognitive function, motor activity, seizure susceptibility, and pain sensitivity, as well as pathological processes such as Parkinson's disease and Alzheimer's disease. Studies of ovarian hormone effects on animal brains have revealed a wide array of neurochemical and structural effects of ovarian steroids, which are reviewed in this article. These studies provide a foundation for understanding hormone effects on mood, behavior, and cognition in the menstrual cycle, during reproductive transitions and in depressive illness. PMID: 9803750, UI: 99020591 Psychopharmacol Bull 1998;34(3):251-9 McEwen BS, Alves SE, Bulloch K, Weiland NG Rockefeller University, New York, NY 10021, USA http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=9803750&form=6&db=m& Dopt=b janet paterson - 52 now /41 dx /37 onset - almonte/ontario/canada [log in to unmask] Scan some of My Past Posts at: http://www.newcountry.nu/pd/members/janet/index.htm Mine the PD List Archives at: http://james.parkinsons.org.uk/ Cull Nine Million Pub-Med Medical Studies at: http://www.ncbi.nlm.nih.gov/PubMed/ Comb the 'People With Parkinson's' Web-Ring at: http://www.webring.org/cgi-bin/webring?ring=parkie;list