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Rebecca Schurr Hartley Melissa S. Chinn Nathan F.E. Ullrich 《Neurobiology of learning and memory》1997,67(3):248-253
Male canaries (Serinus canaria) produce most of their song syllable types on the left side of the syrinx, the two-sided vocal organ. Female canaries treated with testosterone propionate begin to sing in a male fashion, a behavior seldom seen in untreated females. To learn whether syringeal dominance occurs in testosterone-treated female canaries, we deactivated either the right or the left side of the syrinx by severing the tracheosyringeal nerve on that side. Recordings of the birds’ songs were made before and after the nerve cut, and song analysis was based upon visual comparisons of sound spectrograms. Pre- and post-operative syllable types were identified by their frequency structures and repetition rates. Six of eight birds displayed clear left dominance as assessed by nerve cuts; therefore, we concluded that most, but not all, female canaries generate the majority of their syllable types with the left syrinx. 相似文献
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Alan A. Hartley 《Attention, perception & psychophysics》1982,31(4):367-375
The lines of a surrounding figure can induce illusory distortion in the apparent orientation of an enclosed line. The axes of symmetry of the figure have been implicated in this distortion. A series of experiments showed generally that the effects are attributable to the axes of bilateral symmetry rather than to less restrictively defined axes of topological symmetry, although those axes may produce other illusory effects. Furthermore, the distortions affect the whole line rather than only parts of it. These results are consistent with interactions of the lines in the orientation rather than position domain. It is suggested that axes of symmetry may play an important role in pattern recognition. 相似文献
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Guillaume Chauvel François Maquestiaux Elise Gemonet Alan Hartley André Didierjean Rich Masters 《Journal of motor behavior》2018,50(3):268-274
Can Alzheimer's disease (AD) patients efficiently learn to perform a complex motor skill when relying on procedural knowledge? To address this question, the authors compared the golf-putting performance of AD patients, older adults, and younger adults in 2 different learning situations: one that promotes high error rates (thus increasing the reliance on declarative knowledge) or one that promotes low error rates (thus increasing the reliance on procedural knowledge). Motor performance was poorer overall for AD patients and older adults relative to younger adults in the high-error condition but equivalent between similar groups in the low-error condition. Also, AD patients in the low-error condition had better performance at the final putting distance relative to those in the high-error condition. This performance facilitation for AD patients likely stems from intact procedural knowledge. 相似文献
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Procuring Sexual Services: Evidencing Masculinity Diversity and Difference Through Sex Work Research
Masculinities theorising has promoted a traditional view of maleness, conceptualising it as being dominant, successful and non-emotional; that is hegemonic masculinity. Contemporary work on men and their behaviour, recognising need and emotions, has been classified as subordinate to hegemonic masculinity. We examine the procurement of sexual services by a cohort of heterosexual men in New South Wales, Australia arguing that our findings support contemporary masculinity writings. Our analysis suggests that men seek and obtain intimacy and emotional experiences through procurement of sex, while at the same time reflecting some hegemonic masculine characteristics. We conclude by arguing that research with men who procure sexual services provides new insights into masculinities theorising recognising difference and diversity in what it is to be a man in the twenty-first century. 相似文献