Development of a simple pressure and heat stimulator for intra- and interdigit functional magnetic resonance imaging

For this study, we developed a simple pressure and heat stimulator that can quantitatively control pressure and provide heat stimulation to intra- and interdigit areas. The developed stimulator consists of a control unit, drive units, and tactors. The control unit controls the stimulation parameters, such as stimulation types, intensity, time, and channel, and transmits a created signal of stimulation to the drive units. The drive units operate pressure and heat tactors in response to commands from the control unit. The pressure and heat tactors can display various stimulation intensities quantitatively, apply stimulation continuously, and adjust the stimulation areas. Additionally, they can easily be attached to and detached from the digits. The developed pressure and heat stimulator is small in total size, easy to install, and inexpensive to manufacture. The new stimulator operated stably in a magnetic resonance imaging (MRI) environment without affecting the obtained images. A preliminary functional magnetic resonance imaging (fMRI) experiment confirmed that differences in activation of somatosensory areas were induced from the pressure and heat stimulation. The developed pressure and heat stimulator is expected to be utilized for future intra- and interdigit fMRI studies on pressure and heat stimulation.     

The Holy Spirit in EG,TTL, and CTC: The Pneumatological Impulse for Christian Mission

This article examines the correspondence in the pneumatological impulse for mission among three documents: Evangelii Gaudium (EG), Together towards Life (TTL), and The Cape Town Commitment (CTC). This consonance in EG, TTL, and CTC is significant given the dissonance on theological and missiological perspectives across the representing ecclesial bodies since the mid‐20th century. Following a review of pneumatology in these three documents, the paper proposes a forward‐looking trajectory to a more expansive view of the Spirit's ever‐mysterious operations in the church, in missions, and in the world.     

Development of a simple MR-compatible vibrotactile stimulator using a planar-coil-type actuator

For this study, we developed a magnetic resonance (MR)-compatible vibrotactile stimulator using a planar-coil-type actuator. The newly developed vibrotactile stimulator consists of three units: control unit, drive unit, and planar-coil-type actuator. The control unit controls frequency, intensity, time, and channel, and transfers the stimulation signals to the drive unit. The drive unit operates the planar-coil-type actuator in response to commands from the control unit. The planar-coil-type actuator, which uses a planar coil instead of conventional electric wire, generates vibrating stimulation through interaction of the current of the planar coil with the static magnetic field of the MR scanner. Even though the developed tactile stimulating system is small, simple, and inexpensive, it has a wide range of stimulation frequencies (20 ~ 400 Hz, at 40 levels) and stimulation intensities (0 ~ 7 V, at 256 levels). The stimulation intensity does not change due to frequency changes. Since the transient response time is a few microseconds, the stimulation time can be controlled on a scale of microseconds. In addition, this actuator has the advantages of providing highly repeatable stimulation, being durable, being able to assume various shapes, and having an adjustable contact area with the skin. The new stimulator operated stably in an MR environment without affecting the MR images. Using functional magnetic resonance imaging, we observed the brain activation changes resulting from stimulation frequency and intensity changes.     

Predicting Health-related Quality of Life: Testing the Contextual Model Using Structural Equation Modeling

This study aims to investigate the utility of the Contextual Model of Health-Related Quality of Life (HRQOL) to explain the relationship among the domains of HRQOL with a diverse, population-based sample of breast cancer survivors (BCS). We employed a cross-sectional design to investigate HRQOL among 703 multiethnic, population-based BCS. The study methodology was guided by the Contextual Model of HRQOL. Structural Equation Modeling (SEM) was conducted to assess the hypothesized model. SEM identified significant relationships among the bio-psychological domain (general health status, cancer-related factors, and psychological factors), the cultural-socio-ecological domain (health care satisfaction, socio-ecological factor, and socio-economic status), and HRQOL. The best fitting model indicates direct pathways from ‘general health status’, ‘years since diagnosis’, ‘health care satisfaction’ and ‘socio-ecological factor’ to ‘HRQOL’ variables. Additionally, ‘socio-ecological factor’ and ‘socio-economic status’ variables were indirectly associated with HRQOL through ‘general health status’. Findings suggest that the Contextual Model of HRQOL adds valid factors to explain overall HRQOL and increases our understanding of the socio-ecological dimensions predicting HRQOL outcomes. The revelation of inter-relations among the dimensions of HRQOL may inform the translational and clinical utility of the HRQOL construct.

THE INTERACTION OF BIASES IN THE EVALUATION OF MANAGERS IN SINGAPORE

In this study, independent samples from the same population responded to three simulated situations in which sex and other independent variables were manipulated. In the first two cases, discriminatory decisions against women managers by male respondents were clearly discerned. However, in the third case where sex as an independent variable interacted with developmental potential, the pattern of evaluative decisions changed. A high-potential female was treated as favourably as a high-potential male while the low-potential male received the lowest selection rate from the male respondents. While the finding is not altogether surprising in a meritocratic society like Singapore, the study points to the need to explore the interactive effects which sex bias may have with other attitudes in a specific social context.     

Multi-Task Study of the Effects of Task Load and Gender on the Development of Visual Field Asymmetries

This study was designed to examine whether the developmental course of visual hemispheric asymmetry is affected by task load and whether gender differences occur with age. Three experiments were performed according to the additive structure of reaction time: “go/no-go” task, “choice-reaction-time” task, and “category-sort” task. Children in three different age groups (7- to 8-years, 10 years, and 13 year olds) were presented lists of words using a visual half-field procedure. Results revealed that in the go/no-go task (Experiment 1), left hemispheric superiority for processing of word stimuli was evident at all three developmental ages, but no gender differences appeared. However, in the choice-reaction-time task (Experiment 2), and the category-sort task (Experiment 3), left hemispheric superiority was displayed by 7- to 8- and 10-year-old males, but not by 13-year-old males. In contrast, girls did not show the left hemispheric advantage at any of the developmental ages. It was concluded that visual hemispheric asymmetry exists in children at an early age, but the magnitude of asymmetry is dependent on age, gender, and task load.     

Acculturation and emotion among Asian Americans

This study examined the emotion experience of Asian Americans in relation to respondents' orientation to acculturation: Assimilation, Integration, Separation, or Marginalization (J. W. Berry, 1980). Ego- versus other-focused emotion experiences (H. R. Markus & S. Kitayama, 1991) and attention and valence, 2 stages in P. C. Ellsworth's (1994) model of emotion appraisal, were used to investigate the relation between acculturation and affect. Asian Americans most and least assimilated to the dominant Anglo American culture were expected to exhibit emotion responses correspondingly similar to and different from those of Anglo Americans. Those with a bi-cultural or integrationist trajectory should occupy a middle ground in terms of emotional experience. Compared with the appraisal process, ego- versus other-focused emotions, mediated in part by one's self-construal (e.g., independent or interdependent), were more strongly associated with acculturation orientation in the expected directions. The implications of recognizing the influence of acculturation on the emotional meaning of life encounters of newcomers are discussed in light of community psychology and clinical practice.