Recent studies on the biological development of the prefrontal cortex in rhesus monkeys are reviewed. These studies have elucidated the basic neural circuitry underlying the delayed-response function in adult nonhuman primates and suggest that a critical mass of cortical synapses is important for the emergence of this cognitive function. (BN)

Explores how the body's biological clock affects the way musicians practice and perform. Delineates questions concerning this phenomenon. Discusses the implications for music teaching and focuses on areas for collaborative research between neurology researchers and music educators. (NL)