Effects of Transcranial Direct Current Stimulation on Brain Electrical Activity, Heart Rate Variability, and Dual-Task Performance in Healthy and Fibromyalgia Women: A Study Protocol.

People with fibromyalgia could experience physical and cognitive impairments. Furthermore, when performing two tasks at the same time, people with fibromyalgia showed a higher dual-task cost compared to a single task than healthy people. This may result in poorer performance of activities of daily living that are commonly presented as a combination of two or more tasks. Transcranial direct current stimulation (tDCS) is a promising nonpharmacological therapy. However, there is controversy regarding the intensities and the effectiveness of this therapy. Thus, the present study will aim: (1) to compare the effectiveness and the impact of two tDCS intensities (1 mA and 2 mA) on cognitive, motor, brain functions, and cardiac autonomic modulation; (2) to study the impact of tDCS on the dual-task performance and creativity after applying tDCS in dorsolateral prefrontal cortex. In this study, 26 women will participate and will be divided into two groups: women with fibromyalgia (n = 13), and healthy controls (n = 13). A reduction in cognitive-motor interference in dual-task performance is expected, as well as a modification in neurophysiological parameters and an improvement in cardiac autonomic modulation. Lastly, no different effects are expected depending on the stimulation intensity applied. The obtained results will help to determine if tDCS in the dorsolateral prefrontal cortex could improve the occupational performance of women with fibromyalgia.

Creativity associated with the application of a motivational intervention programme for the teaching of dance at school and its effect on the both genders.

The current study reviews processes of teaching-learning based on creativity, with the application by teachers of several strategies to support the need for autonomy, competence, and relatedness. The aim is to learn the effect of pupil's gender on their motivational level and the psychological consequences that might arise in the cognitive, affective, and behavioural domains. A quasi-experimental study was carried out at four schools in Mexico, with 12 physical education teachers and 40 natural groups of pupils aged between 11 and 17 (M = 13.17). The groups were randomly assigned to either an experimental group (24 groups, 447 pupils) or a control group (16 groups, 474 pupils). A prior training programme was carried out with the teachers in the experimental group to enable them to support the psychological need for autonomy, competence, and relatedness. Initial and final measurements were taken in both groups, and the results revealed that independently of the programme used, girls showed higher motivation and positive psychological consequences in the teaching of dance compared to the male participants. In conclusion, it is important to continue with research and set a methodology that addresses those differences, dedicating the necessary time and treatment to resolve their questions and necessities.

Correction: Creativity associated with the application of a motivational intervention programme for the teaching of dance at school and its effect on the both genders.

[This corrects the article DOI: 10.1371/journal.pone.0174393.].