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During stance, head extension increases postural sway, possibly due to interference with sensory feedback. The sit-to-stand movement is potentially destabilizing due to the development of momentum as the trunk flexes forward and the body transitions to a smaller base of support. It is unclear what role head orientation plays in the postural and movement characteristics of the sit-to-stand transition. The authors assessed how moving from sitting to standing with head-on-trunk extension compared with moving with the head neutral or flexed, or with moving with the head facing forward in space (which would involve head-on-trunk extension, but not head-in-space extension) in healthy, young participants. Head-on-trunk extension increased center of pressure variability, but decreased movement velocities, movement duration, and trunk flexion compared with flexed and neutral head-on-trunk orientations. Similarities in movement characteristics between head-on-trunk extension and the forward head-in-space orientation suggest that stabilizing the head in space does not fully counteract the postural and movement changes due to head-on-trunk extension. Findings suggest that proprioceptive feedback from the neck muscles contributes to the regulation of posture and movement, and therefore should not be overlooked in research on the role of sensory feedback in postural control.  相似文献   
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Notterman (1975) argued, contrary to my 1974 article, that the data obtained by Notterman and Page (1962) confirm the important role of proprioception in skilled performance. I argue that these data are in fact ambiguous when it comes to distinguishing the effects of proprioception from those of outflow control.  相似文献   
146.
Christopher McMahon 《Dialog》2008,47(3):271-277
Abstract : Both pastors and academic theologians have struggled with the place of apocalyptic language and imagery within the modern worldview. Many have dismissed apocalyptic as escapist and have alleged that it is divorced from the political and social concerns at the heart of contemporary theology and practice. Yet, contemporary critical theorists have overcome similar suspicions about science‐fiction and now embrace it as a unique vehicle for thinking about the ills and the promise of contemporary culture. This essay suggests that within contemporary critical theory one finds useful tools for reading and using apocalyptic language and imagery as a means for engaging a world threatened by sin and violence.  相似文献   
147.
Multisensory Information in the Control of Complex Motor Actions   总被引:1,自引:0,他引:1  
ABSTRACT— For many of the complex motor actions we perform, perceptual information is available from several different senses including vision, touch, hearing, and the vestibular system. Here I discuss the use of multisensory information for the control of motor action in three particular domains: aviation, sports, and driving. It is shown that performers in these domains use information from multiple senses—frequently with beneficial effects on performance but sometimes with dangerous consequences. Applied psychologists have taken advantage of our natural tendency to integrate sensory information by designing multimodal displays that compensate for situations in which information from one or more of our senses is unreliable or is unattended due to distraction.  相似文献   
148.
Abstract :  This paper explores the role of imagination for the supervisor and examines the differences between the supervisor's use of creative and defensive imagination. It is suggested that reverie and imagining play a central role in supervision but that these need to be harnessed in the service of the reality principle. It is argued that the Jungian emphasis on the ego-self relationship provides a context for this process. A clinical example of work with a supervisee is described in which hidden aspects of a strong erotic transference/countertransference were revealed in the supervisor's imagining and became available for reflection.  相似文献   
149.
Arvind Sharma 《Zygon》2004,39(3):707-712
Abstract. The Bhagavadg?tā is a popular Hindu text containing eighteen chapters. It begins with the hero, Arjuna, showing a marked unwillingness to engage in combat on the eve of battle. He is finally persuaded to do so by Krishna, who is an incarnation of God. Krishna actually reveals himself as such to an amazed Arjuna in the eleventh chapter. The fact that Arjuna does not immediately heed Krishna's advice to engage in battle after Krishna's sensational self‐disclosure has long puzzled students of the text. It is only at the end of the eighteenth chapter that Arjuna finally shows his readiness to fight. In this essay I argue that the discussion of the nine primary sensory states by Eugene d'Aquili may help resolve this issue and thus provide an instance of a case in which modern scientific study of religion enhances our understanding of a religious phenomenon, as a corrective to the usual charge that it must invariably diminish it.  相似文献   
150.
One central brand of representationalism claims that the specific phenomenal character of an experience is fully determined by its content. A challenge for this view is that cognitive and perceptual experiences sometimes seem to have the same representational content while differing in phenomenal character. In particular, it might seem that one can have faint imagery experiences or conscious thoughts with the same contents as vivid perceptual experiences. This paper argues that such cases never arise, and that they are probably metaphysically impossible. I also suggest a fully representational account of differences in vividness between phenomenal experiences.  相似文献   
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