Neural adaptations associated with interlimb transfer in a ballistic wrist flexion task.

Cross education is the process whereby training of one limb gives rise to increases in the subsequent performance of its opposite counterpart. The execution of many unilateral tasks is associated with increased excitability of corticospinal projections from primary motor cortex (M1) to the opposite limb. It has been proposed that these effects are causally related. Our aim was to establish whether changes in corticospinal excitability arising from prior training of the opposite limb determine levels of interlimb transfer.

We used three vision conditions shown previously to modulate the excitability of corticospinal projections to the inactive (right) limb during wrist flexion movements performed by the training (left) limb. These were: mirrored visual feedback of the training limb; no visual feedback of either limb; and visual feedback of the inactive limb. Training comprised 300 discrete, ballistic wrist flexion movements executed as rapidly as possible. Performance of the right limb on the same task was assessed prior to, at the mid point of, and following left limb training.

There was no evidence that variations in the excitability of corticospinal projections (assessed by transcranial magnetic stimulation (TMS)) to the inactive limb were associated with, or predictive of, the extent of interlimb transfer that was expressed. There were however associations between alterations in muscle activation dynamics observed for the untrained limb, and the degree of positive transfer that arose from training of the opposite limb.

The results suggest that the acute adaptations that mediate the bilateral performance gains realised through unilateral practice of this ballistic wrist flexion task are mediated by neural elements other than those within M1 that are recruited at rest by single-pulse TMS.

Notions of Conflict and 'New' Citizens' Inclusion:Post-Cosmopolitan Contestations in Germany

This chapter argues that there is a gap between symbolic exclusion from the national community when it comes to the inclusion of new German citizens of Turkish or Kurdish background, and a broad claim to be a cosmopolitan society, at large. While focusing on narratives of minority key political activists in Berlin, and analysing individual stories on the background of contemporary populist xenophobic debates and hate crime of the 1990s, the chapter illustrates both, individual success and vulnerability due to institutionalised forms of anti- Muslim and anti-Turks segments in Germany.

The ethics of ethical debates in peace and conflict research: Notes towards the development of a research covenant

This article outlines the case for peace and conflict researchers to formulate a research covenant to better shape their ethical obligations and responsibilities. This is an urgent necessity given that ethical debates have in some proponents become emotive and are not conducted in an ethical manner. In coming to this assessment, the article reviews trends in the research ethics literature and draws out some of the generic issues addressed in a review of the personal reflexivity that an assortment of individual peace and conflict researchers have engaged in when recounting their fieldwork experiences. These generic issues are reformulated in an attempt to codify appropriate ethical practice in peace and conflict research, and they go towards determining the contents of the research covenant. It is suggested that the research covenant is a more ethical way to debate the ethics of peace and conflict research.

Transposing Musical Skill: Sonification of movement as concurrent augmented feedback enhances learning in a bimanual task

Concurrent feedback provided during acquisition can enhance performance of novel tasks. The ‘guidance hypothesis’ predicts that feedback provision leads to dependence and poor performance in its absence. However, appropriately-structured feedback information provided through sound (‘sonification’) may not be subject to this effect. We test this directly using a rhythmic bimanual shape-tracing task in which participants learned to move at a 4:3 timing ratio. Sonification of movement and demonstration was compared to two other learning conditions: (1) sonification of task demonstration alone and (2) completely silent practice (control). Sonification of movement emerged as the most effective form of practice, reaching significantly lower error scores than control. Sonification of solely the demonstration, which was expected to benefit participants by perceptually unifying task requirements, did not lead to better performance than control. Good performance was maintained by participants in the sonification condition in an immediate retention test without feedback, indicating that the use of this feedback can overcome the guidance effect. On a 24-hour retention test, performance had declined and was equal between groups. We argue that this and similar findings in the feedback literature are best explained by an ecological approach to motor skill learning which places available perceptual information at the highest level of importance.

O papel da Wason Selection Task na avaliação da psicopatia

O estudo da Psicopatia tem conquistado, nos anos mais recentes, um grande relevo dentro da investigação científica, estando sempre a serem feitos novos estudos que têm como objetivo a deteção eficiente da psicopatia. Portugal não é diferente. No entanto, apesar de já existirem investigações na área da psicopatia, os estudos e os instrumentos devidamente aferidos para a sua avaliação na população portuguesa ainda são escassos, pelo que se torna necessário continuar a trabalhar e a evoluir nesta área. É neste contexto que surge a ideia da aplicação da Wason Selection Task em conjunto com a PCL:SV na população portuguesa. Acredita-se que a Wason Selection Task poderá complementar a aplicação da PCL:SV, pois esta é um teste de lógica, onde os resultados obtidos são mais fidedignos, na medida de em que há menor permeabilidade a fenómenos de desejabilidade social.

Do challenge, task experience or computer familiarity influence the learning of historical chronology from virtual environments in 8–9 year old children?

Studies examined the potential use of Virtual Environments (VEs) in teaching historical chronology to 127 children of primary school age (8–9 years). The use of passive fly-through VEs had been found, in an earlier study, to be disadvantageous with this age group when tested for their subsequent ability to place displayed sequential events in correct chronological order. All VEs in the present studies included active challenge, previously shown to enhance learning in older participants. Primary school children in the UK (all frequent computer users) were tested using UK historical materials, but no significant effect was found between three conditions (Paper, PowerPoint and VE) with minimal pre-training. However, excellent (error free) learning occurred when children were allowed greater exploration prior to training in the VE. In Ukraine, with children having much less computer familiarity, training in a VE (depicting Ukrainian history) produced better learning compared to PowerPoint, but no better than in a Paper condition. The results confirmed the benefit of using challenge in a VE with primary age children, but only with adequate prior familiarisation with the medium. Familiarity may reduce working memory load and increase children’s spatial memory capacity for acquiring sequential temporal-spatial information from virtual displays. Keywords: timeline, chronographics

Most Significant Change in conflict settings: staff development through monitoring and evaluation

Capoeira4Refugees is an NGO that uses the Afro-Brazilian art-form of Capoeira to promote psychosocial well-being in children affected by conflict and occupation. Capoeira4Refugees introduced the Most Significant Change (MSC) methodology to monitor and evaluate project implementation and impact across two locations in the Middle East. Analysis of interviews conducted with five field staff revealed that in line with, and building on previous research, MSC became an empowering tool that led to staff development. The potential for MSC to build staff reflexivity, independence and leadership has implications for other organisations working in conflict areas, particularly in situations of remote management.