失用性失写的脑机制

失用性失写是指人们知道该如何书写, 但实际上却不会书写或错误书写的一种现象。失用性失写涉及的神经网络包括皮层与皮层连接、皮层与皮质下连接。其中前者包括额-顶叶相关脑区的连接、顶-枕叶相关脑区的连接以及额-顶-枕相关脑区的连接, 这些神经网络分别负责操作空间表征图像、回忆以及检索字母的形状等; 后者包括小脑与额-顶叶的连接、左丘脑-大脑皮质的连接以及纹状体-内囊-左额顶叶的连接等, 它们分别与图像输出程序、书写运动过程、操作指令的执行过程以及字素形成过程等有关。今后的研究应该集中在完善失用性失写的研究范式、深入探讨失用性失写的心理机制以及推动其康复工作的开展等方面。     

Perceiving Other Planets: Bodily Experience,Interpretation, and the Mars Orbiter Camera

An emerging philosophical perspective called “postphenomenology,” which offers reflection upon human relations to technology, has the potential to increase our understanding of the functions performed by imaging technologies in scientific practice. In what follows, I review some relevant insights and expand them for use in the concrete analysis of practices of image interpretation in science. As a guiding example, I explore how these insights bear upon a contemporary debate in space science over images of the fossilized remains of a river delta on the surface of Mars. These considerations include an analysis of the ways that the objects of study are transformed by the mediating imaging technologies, such as the Mars Orbiter Camera.

Counselling Australian baby boomers: examining the loss and grief issues facing aging distance-separated sibling dyads

It has long been recognised that mature-aged sibling dyads provide each other with emotional support. What has yet to be determined is whether this support function is maintained within the baby boomer generational cohort of sibling dyads who through economic relocation/migration have become separated by distance. As such, this paper highlights the need for research to be conducted into the experiences of baby boomers dealing with sibling loss and grief-related issues without the support of their nuclear and extended family members.     

辅助生殖技术引发的案例伦理分析

辅助生殖技术虽然给无数个不育夫妇带来了福音,但同时也给人类传统的伦理观念带来了冲击和挑战,同时它的滥用还可能给人类造成灾难。通过对由辅助生殖技术引发的7个典型案例的伦理分析和研究,来进一步探讨辅助生殖技术中伦理问题及其对策。     

低收入女性的生活史特质与繁衍策略的关系

本研究探讨了单一性伙伴（n = 222）、两个以上性伙伴（n = 145）与无性伙伴（n = 106）三组低收入女性的长期配偶偏好、人生阅历、生活史特质与个人特征的关系。研究结果显示三组女性的配偶偏好趋于一致,繁衍策略的组别差异与人生阅历和所处环境具有较高相关,三组女性并不偏好特定类型的配偶。路径分析显示首次生育年龄直接预测配偶数量,受教育水平和初次性交时间对配偶数量与首次生育年龄之间的关系具有显著调节作用;女儿与父亲相处的时间可以预测初次性交年龄。研究结果显示父亲投资影响青少年性行为发展的时间表,人类繁衍的长期进化是性行为变化的根源     

Decision-Making About Reproductive Choices Among Individuals At-Risk for Huntington's Disease

We explored how individuals at-risk for HD who have or have not been tested make reproductive decisions and what factors are involved. We interviewed 21 individuals (8 with and 4 without the mutation, and 9 un-tested) in-depth for 2 hours each. At-risk individuals faced a difficult series of dilemmas of whether to: get pregnant and deliver, have fetal testing, have pre-implantation genetic diagnosis, adopt, or have no children. These individuals weighed competing desires and concerns: their own desires vs. those of spouses vs. broader moral concerns (e.g., to end the disease; and/or follow dictates against abortion) vs. perceptions of the interests of current or future offspring. Quandaries arose of how much and to whom to feel responsible. Some changed their perspectives over time (e.g., first “gambling,” then being more cautious). These data have critical implications for genetic counselors and other health care workers and future research, particularly as more genetic tests become available.     

动态面孔表情优势效应的心理机制及神经基础

动态面孔表情优势效应是指较静态面孔表情而言, 个体在识别动态的面孔表情时表现出较好的识别能力。动态面孔表情优势效应的心理机制主要涉及增强的构形加工、补偿角色和面孔模仿能力。此外, 该优势效应的神经网络则由核心的神经网络和扩展的神经网络组成, 前者主要负责早期的知觉编码和刺激的运动加工, 而后者与个体的面孔模仿能力、刺激的动态表征等有关。今后的研究应集中在完善延伸的神经网络、拓展其心理机制; 开展动态面孔表情优势效应的发展性研究; 考察面孔表情的刚性运动特征; 注重在虚拟现实环境下研究动态面孔表情的优势效应。     

Folded Futurity: Epigenetic Plasticity,Temporality, and New Thresholds of Fetal Life

The life sciences are generating a transformative view of the biological body not as fixed and innate but as permeable to its environment and, therefore, plastic: development is open and malleable. Emblematic of these new sciences is environmental epigenetics, which investigates environmental factors that come into the body to shape expression of genes across the life course; prominent are environmental exposures during fetal development, which epigeneticists propose influence not only birth outcomes but also lifelong health. How does this new emphasis on permeability and plasticity during fetal development change how the fetus and fetal vulnerability are understood in the current scientific literature? Perspectives on genomic and reproductive temporality help conceptualize environmental epigenetics as a dynamic relationship between plasticity and determinism. This epigenetic temporality links past, present, and future in way that gives the fetus a keystone role as the vulnerable space-time of environmental epigenetics. Epigenetic temporality produces a new, folded futurity that brings multiple, future generations into the present, influenced by current environmental conditions. In doing this, epigenetics shifts thresholds of fetal vulnerability and intervention to incorporate other entities, including reproductive cells (gametes and primordial germ cells) and very young children. Epigenetic temporality folds in on itself, producing new versions of vulnerable, plastic life that require protection now, in the enduring present, even as the future toward which epigenetics is oriented constantly recedes.     

Gender,Employment Status,and Abortion: A Longitudinal Analysis

Building upon extant literature, we examine the influence gender and employment status exert on abortion attitudes among the mass public. Specifically, we assess if men, employed women, and homemaker women view the abortion issue differently and if the same factors account for variation in each group's attitudes toward abortion. Analysis of General Social Survey data from 1973 to 2000 indicates that although homemaker women tend to be more pro-life than do men or working women, the attitudes of all 3 groups exhibit similar changes over time. In addition, our results suggest that the same variables account for variation in abortion attitudes for all 3 groups. Our results suggest that the causes and effects of abortion attitudes do not appear to be gender-specific, but rather are relatively uniform across genders and employment statuses.     

Human pelvis motions when walking and when riding a therapeutic horse

A prevailing rationale for equine assisted therapies is that the motion of a horse can provide sensory stimulus and movement patterns that mimic those of natural human activities such as walking. The purpose of this study was to quantitatively measure and compare human pelvis motions when walking to those when riding a horse. Six able-bodied children (inexperienced riders, 8–12 years old) participated in over-ground trials of self-paced walking and leader-paced riding on four different horses. Five kinematic measures were extracted from three-dimensional pelvis motion data: anteroposterior, superoinferior, and mediolateral translations, list angle about the anteroposterior axis, and twist angle about the superoinferior axis. There was generally as much or more variability in motion range observed between riding on the different horses as between riding and walking. Pelvis trajectories exhibited many similar features between walking and riding, including distorted lemniscate patterns in the transverse and frontal planes. In the sagittal plane the pelvis trajectory during walking exhibited a somewhat circular pattern whereas during riding it exhibited a more diagonal pattern. This study shows that riding on a horse can generate movement patterns in the human pelvis that emulate many, but not all, characteristics of those during natural walking.