Equal prefrontal cortex activation between males and females in a motor tasks and different visual imagery perspectives: a functional near-infrared spectroscopy (fNIRS) study

Kanthack, Thiago Ferreira Dias; Bigliassi, Marcelo; Altimari, Leandro Ricardo

doi:10.1590/s1980-65742013000300014

Cited by 5 publications

(2 citation statements)

References 21 publications

(17 reference statements)

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“…There are certain elements of this study that could be considered limitations, such as the lack of uniformity in the participants' imagination levels, with great variation in players' imagery, in terms of color, sound and perspective. This could mean that the single IMA group was actually made up of heterogenous subsets, although one recent study has shown that the perspective adopted does not appear to make any difference to motor imagery results 29 In other words, in the present study each participant was given instructions and performed motor imagery in their own way, so they were controlled, but not manipulated, as was the case in a study by Guillot et al 2 . The ideal approach would probably be to subdivide participants on the basis of their imagery levels.…”

Section: Discussionmentioning

confidence: 77%

Efeito agudo da imagética no desempenho de lances livres e percepção de autoeficácia em atletas

Kanthack

Bigliassi

Vieira

et al. 2013

Rev. Bras. Cineantropom. Desempenho Hum.

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It is becoming ever more common for the difference between winning and losing in sport to be decided by the smallest details. In basketball, free throws can be a differentiating factor between teams and motor imagery (IMA) has been studied as a potential ergogenic agent to improve free throw performance, but little attention as been given to its acute effects, particularly among athletes. The objective of this study was to investigate the effect of a single mental training session on the free throw performance and self-efficacy of young athletes. Eleven young basketball players from the Federação Paulista de Basquete junior league were enrolled on the study. Players were either allocated to an IMA group and watched a 1 minute video before a 3-minute motor imagery session, or to a control group and were rested for 4 minutes, before taking 10 free throw shots in both cases. All participants completed a self-efficacy questionnaire before and after the intervention. Statistical analysis was conducted using the Mann-Whitney U test and the Wilcoxon test, plus measures of Smallest Worthwhile Change (SWC). There were no significant difference between median results for the two groups, but the SWC statistic indicated an 84% likelihood that mental training had a beneficial effect on performance in the first two free throws. It is concluded that motor imagery used in advance has an 84% chance of having a beneficial effect on performance in up to two free throws. Resumo -O esporte cada vez mais diferencia vencedores e perdedores por mínimos detalhes. No basquetebol um fator diferenciador é o lance livre. Sessões de imagética motora (IMA) vêm sendo estudada como um ergogênico sobre o desempenho de lance livre, porém, pouco se estuda o seu efeito agudo, principalmente, em atletas. O objetivo desse estudo foi verificar o efeito de uma sessão prévia de treinamento mental sobre o desempenho no lance livre e na percepção de autoeficácia de jovens atletas. Participaram do estudo 11 atletas juvenis da Federação Paulista de Basquete. Na condição IMA, foram submetidos a 1 minuto de vídeo + 3 minutos de imagética, seguidos de 10 lances livres, e no controle, 4 minutos de repouso seguidos de 10 lances livres. O questionário de autoeficácia foi preenchido antes e após a intervenção. Para análise estatística, foram utilizados os testes U de Mann-Withney, Wilcoxon e o Smallest Wothwhille Change (SWC). Não foi encontrada diferença entre a mediana dos grupos, porém, o SWC apontou uma possibilidade de 84% de efeito benéfico do treinamento mental sobre o desempenho para até 2 lances livres. Concluiu-se que a imagética motora prévia tem 84% de chance de causar um efeito benéfico sobre o desempenho de lance livre em até 2 arremessos. Palavras-chave: Autoeficácia; Desempenho atlético; Psicologia aplicada. Acute effect of motor imagery on athletes Kanthack et al.

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Section: Discussionmentioning

confidence: 77%

Efeito agudo da imagética no desempenho de lances livres e percepção de autoeficácia em atletas

Kanthack

Bigliassi

Vieira

et al. 2013

Rev. Bras. Cineantropom. Desempenho Hum.

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“…3,8,33 This task was included since it has been shown that the PFC is also affected by motor imagery. 63,64 Rest (Rest)…”

Section: Task Descriptionmentioning

confidence: 99%

Usability and performance-informed selection of personalized mental tasks for an online near-infrared spectroscopy brain-computer interface

et al. 2015

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Abstract. Brain-computer interfaces (BCIs) allow individuals to use only cognitive activities to interact with their environment. The widespread use of BCIs is limited, due in part to their lack of user-friendliness. The main goal of this work was to develop a more user-centered BCI and determine if: (1) individuals can acquire control of an online near-infrared spectroscopy BCI via usability and performance-informed selection of mental tasks without compromising classification accuracy and (2) the combination of usability and performance-informed selection of mental tasks yields subjective ease-of-use ratings that exceed those attainable with prescribed mental tasks. Twenty able-bodied participants were recruited. Half of the participants served as a control group, using the state-of-the-art prescribed mental strategies. The other half of the participants comprised the study group, choosing their own personalized mental strategies out of eleven possible tasks. It was concluded that users were, in fact, able to acquire control of the more user-centered BCI without a significant change in accuracy compared to the prescribed task BCI. Furthermore, the personalized BCI yielded higher subjective ease-of-use ratings than the prescribed BCI. Average online accuracies of 77 AE 12.9% and 73 AE 12.9% were achieved by the personalized and prescribed mental task groups, respectively.

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Weaning Off Mental Tasks to Achieve Voluntary Self-Regulatory Control of a Near-Infrared Spectroscopy Brain-Computer Interface

Weyand

Takehara‐Nishiuchi

Chau

2015

IEEE Trans. Neural Syst. Rehabil. Eng.

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As a noninvasive and safe optical measure of hemodynamic brain activity, near-infrared spectroscopy (NIRS) has emerged as a potential brain-computer interface (BCI) access modality. Currently, to the best of our knowledge, all NIRS BCIs use mental tasks to elicit changes in regional hemodynamic activity. One of the limitations of using mental tasks is that they can be cognitively demanding, and unintuitive. The goal of this work was to explore the development of a neurofeedback-based NIRS BCI that weans users off mental tasks, to instead use voluntary self-regulation. Ten able-bodied participants were recruited for this study. After ten sessions of using two personalized mental tasks to increase and decrease the participant's hemodynamic activity, the users were asked, for the remaining sessions, to stop performing their tasks and instead use only a desire to modulate their hemodynamic activity. By the final online session, participants were able to exclusively use voluntary self-regulation with an average accuracy of 79 ±13%. Additionally, the majority of participants indicated that BCI control via self-regulation was less taxing and more intuitive than BCI operation using mental tasks.

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Equal prefrontal cortex activation between males and females in a motor tasks and different visual imagery perspectives: a functional near-infrared spectroscopy (fNIRS) study

Cited by 5 publications

References 21 publications

Efeito agudo da imagética no desempenho de lances livres e percepção de autoeficácia em atletas

Efeito agudo da imagética no desempenho de lances livres e percepção de autoeficácia em atletas

Usability and performance-informed selection of personalized mental tasks for an online near-infrared spectroscopy brain-computer interface

Weaning Off Mental Tasks to Achieve Voluntary Self-Regulatory Control of a Near-Infrared Spectroscopy Brain-Computer Interface

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