Heterogeneities of the perceptual-motor style during locomotion at height

In a recent review, we summarized the characteristics of perceptual-motor style in humans. Style can vary from individual to individual, task to task and pathology to pathology, as sensorimotor transformations demonstrate considerable adaptability and plasticity. Although the behavioral evidence for individual styles is substantial, much remains to be done to understand the neural and mechanical substrates of inter-individual differences in sensorimotor performance. In this study, we aimed to investigate the modulation of perceptual-motor style during locomotion at height in 16 persons with no history of fear of heights or acrophobia. We used an inexpensive virtual reality (VR) video game. In this VR game, Richie's Plank, the person progresses on a narrow plank placed between two buildings at the height of the 30th floor. Our first finding was that the static markers (head, trunk and limb configurations relative to the gravitational vertical) and some dynamic markers (jerk, root mean square, sample entropy and two-thirds power law at head, trunk and limb level) we had previously identified to define perceptual motor style during locomotion could account for fear modulation during VR play. Our second surprising result was the heterogeneity of this modulation in the 16 young, healthy individuals exposed to moving at a height. Finally, 56% of participants showed a persistent change in at least one variable of their skeletal configuration and 61% in one variable of their dynamic control during ground locomotion after exposure to height.

A Systematic Review of Normative Studies Using Images of Common Objects

Common objects comprise living and non-living things people interact with in their daily-lives. Images depicting common objects are extensively used in different fields of research and intervention, such as linguistics, psychology, and education. Nevertheless, their adequate use requires the consideration of several factors (e.g., item-differences, cultural-context and confounding correlated variables), and careful validation procedures. The current study presents a systematic review of the available published norms for images of common objects. A systematic search using PRISMA guidelines indicated that despite their extensive use, the production of norms for such stimuli with adult populations is quite limited (N = 55), particularly for more ecological images, such as photos (N = 14). Among the several dimensions in which the items were assessed, the most commonly referred in our sample were familiarity, visual complexity and name agreement, illustrating some consistency across the reported dimensions while also indicating the limited examination of other potentially relevant dimensions for image processing. The lack of normative studies simultaneously examining affective, perceptive and semantic dimensions was also documented. The number of such normative studies has been increasing in the last years and published in relevant peer-reviewed journals. Moreover, their datasets and norms have been complying with current open science practices. Nevertheless, they are still scarcely cited and replicated in different linguistic and cultural contexts. The current study brings important theoretical contributions by characterizing images of common objects stimuli and their culturally-based norms while highlighting several important features that are likely to be relevant for future stimuli selection and evaluative procedures. The systematic scrutiny of these normative studies is likely to stimulate the production of new, robust and contextually-relevant normative datasets and to provide tools for enhancing the quality of future research and intervention.

Women's perspective of facility-based childbirth services in Ghana: A qualitative study

Background

Many policy makers at country level in both medium and low to middle-income countries still have great difficulty deciding which quality intervention would have the greatest impact on the health outcomes delivered by their health systems.

Aim

To investigate women’s perceptions about the factors that hinders or facilitates the provision of quality childbirth services in Ghana’s health care services to guide improvement efforts.

Setting

The study was conducted in the greater Accra region of Ghana in two primary level hospitals (district hospitals).

Methods

A qualitative study design, which is exploratory, descriptive and contextual in nature, was used. Semi-structured interviews were used to examine the perspectives of 15 women on the factors that influence the quality of childbirth services and how services could be improved in Ghana. Data were analysed through data reduction, data display and generation of themes.

Results

The findings in this study revealed two major themes, firstly, barriers to quality childbirth with five subthemes: high workload, shortage of health workers, non-availability of some services, as well as poor coordination, unacceptable staff behaviour and lack of cooperation from some clients, were identified by the participants as the major causes of poor quality. Secondly, ways to improve care reported, were encouraging health workers to be patient with clients, promoting open communication, friendliness and attentiveness. The need to reorganise service provision to make it more client centred, was also highlighted.

Conclusion

The study findings highlight the importance of paying attention to factors such as service organisation and coordination, high workload, inadequate number of staff, as well as limitations in infrastructure and logistics for quality services delivery. Equally important are institutionalisation of systems to continuously assess and improve staff competence and attitudes and the creation of an environment that can foster good interpersonal relationship between health care providers and patients.