What do musicians, critics, and listeners mean when they use emotion‐words to describe a piece of instrumental music? How can ‘pure’ musical sounds ‘express’ emotions such as joyfulness, sadness, anguish, optimism, and anger? Sounds are not living organisms; sounds cannot feel emotions. Yet many people around the world believe they hear emotions in sounds and/or feel the emotions expressed by musical patterns. Is there a reasonable explanation for this dilemma? These issues gain additional importance when we ask them in the (...) context of music education. For example, can we, or should we, teach music students to listen‐for musical expressions of emotion? If so, how? My contention is that listeners can and do hear emotions in musical patterns; musical sounds can be expressive of emotions. Accordingly, I offer ideas for teaching students how to hear and create musical expressions of emotions. (shrink)

What do musicians, critics, and listeners mean when they use emotion‐words to describe a piece of instrumental music? How can ‘pure’ musical sounds ‘express’ emotions such as joyfulness, sadness, anguish, optimism, and anger? Sounds are not living organisms; sounds cannot feel emotions. Yet many people around the world believe they hear emotions in sounds and/or feel the emotions expressed by musical patterns. Is there a reasonable explanation for this dilemma?These issues gain additional importance when we ask them in the context (...) of music education. For example, can we, or should we, teach music students to listen‐for musical expressions of emotion? If so, how?My contention is that listeners can and do hear emotions in musical patterns; musical sounds can be expressive of emotions. Accordingly, I offer ideas for teaching students how to hear and create musical expressions of emotions. (shrink)

Spermatogenesis is an elaborate process involving both cell division and differentiation, and cell‐cell interactions. Defects in any of these processes can result in infertility, and in some cases these can be genetic in cause. Mapping experiments have defined at least three regions of the human Y chromosome that are required for normal spermatogenesis. Two of these contain the genes encoding the RNA binding proteins RBM and DAZ, suggesting that the control of RNA metabolism is likely to be an important control (...) point for human spermatogenesis. A similar analysis in mice has shown that at least two regions of the mouse Y chromosome are essential for spermatogenesis. Both genetic and reverse genetic approaches have been used to identify mouse autosomal genes required for spermatogenesis. These studies have shown that genes in a number of different pathways are essential for normal spermatogenesis, and also provide putative models of human infertility. (shrink)