Brain plasticity refers to the brain's ability to change structure and function. Experience is a major stimulant of brain plasticity in animal species as diverse as insects and humans. It is now clear that experience produces multiple, dissociable changes in the brain including increases in dendritic length, increases (or decreases) in spine density, synapse formation, increased glial activity,...

storage and viability of spermatozoa. erythrocytes, skin, cornea and endocrine glands. However, the basic principle of arresting the processes of aging and degeneration by anabiosis forms a main theme of the volume. The chapter on the revival of mammals from below zero temperatures is quite well done. The last chapter on the effects of subzero temperatures on animal cells and tissues is sadly q...

Almost every article is appended in order to bring the survey of the literature in the book as a whole up to 1965. Instead of placing the references to each chapter at the chapter's end, the editors have decided to combine all references with the author index. Each entry in the authorreference index then leads one to both a specific journal article and all mention of the article in the present ...

OBJECTIVES This article defines androgens (and anabolic steroids), describes their mechanisms of action, and summarizes their behavioral effects and relevance in animals and humans. METHOD A MEDLINE-derived review of the literature on androgens and behavior was performed; pivotal earlier publications were also obtained and included in the review. RESULTS In animals, the effects of androgens...