Publications by authors named "Kengo Tsujimoto"

Background: Behavioural parent training (BPT) is a psychosocial intervention designed for children with attention deficit hyperactivity disorder (ADHD). BPT programs teach parents to use effective commands or rules whilst encouraging them to pay careful attention to their child's appropriate behaviour. In this study, we will investigate the efficacy of BPT on parental stress, mothers' sense of emotional closeness to their children, and children's attachment security to their mothers.

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Genu recurvatum (knee hyperextension) is a common problem after stroke. It is important to promote the coordination between knee and ankle movements during gait; however, no study has investigated how multi-joint assistance affects genu recurvatum. We are developing a gait training technique that uses robotized knee-ankle-foot orthosis (KAFO) to assists the knee and ankle joints simultaneously.

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The prevailing theory concerning the pathophysiology of unilateral spatial neglect is that it is caused by an interhemispheric imbalance in attention networks. Previous studies have demonstrated that repetitive transcranial magnetic stimulation or transcranial direct current stimulation (tDCS) delivered over the right posterior parietal cortex can induce transitory neglect-like deficits in healthy individuals. We examined whether right cathodal and left anodal tDCS delivered over the posterior parietal cortex could produce neglect-like deficits and change the resting-state functional connectivity (rsFC) of attention networks.

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Article Synopsis
  • The study investigated how repetitive transcranial magnetic stimulation (rTMS) of the cerebellum affects motor performance during targeting tasks in 22 healthy young adults.
  • Participants completed a wrist manipulation task where they aimed to move a bar to a target as quickly as possible; they underwent either active or sham rTMS after the initial repetitions.
  • Results showed that while the sham rTMS group improved in reaction time and accuracy, the active rTMS group experienced inhibited improvements, suggesting that low-frequency rTMS may disrupt motor learning and highlight the cerebellum's role in motor skill development and error correction.
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Background: Rehabilitation for unilateral spatial neglect (USN) using prism adaptation (PA) is one of the most widely used methods, and the effectiveness of PA is well-evidenced. Although the effect of PA generalized various neglect symptoms, the effectiveness for some aspects of neglect is not fully proven. The Catherine Bergego Scale (CBS) was developed to identify problems with the activities of daily living (ADL) caused by USN.

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Background: Unilateral spatial neglect (USN) can interfere with rehabilitation processes and lead to poor functional outcome.

Aim: To investigate the influence of left and right USN on rehabilitation outcomes using Catherine Bergego Scale (CBS) in stroke patients and the relationships among improvement of USN, improvement of motor autonomy (measured by functional independence measure [FIM] gain), length of stay and discharge destination.

Design: Observational study.

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It has been reported that it is possible to observe transient changes in resting-state functional connectivity (FC) in the attention networks of healthy adults during treatment with prism adaptation. by using functional magnetic resonance imaging (fMRI) (see "Prism adaptation changes resting-state functional connectivity in the dorsal stream of visual attention networks in healthy adults: A fMRI study" (Tsujimoto et al., 2018) [1].

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Unilateral spatial neglect (USN) can be defined as a failure to orient to contra-lesional stimuli in the absence of either sensory or motor defects. Although the behavioral and clinical effects of prism adaptation (PA) are widely accepted, its underlying mechanisms are still controversial. However, recent neuroimaging and neurophysiological studies support the idea that PA affects the visual attention and sensorimotor networks including in the parietal cortex and cerebellum.

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Article Synopsis
  • The study investigates the effects of combining motor imagery (MI) with electrical stimulation (ES) on upper extremity motor function in patients with chronic hemiparetic stroke.
  • Ten patients participated in a 10-day intervention focused on imagining finger extension while receiving electrical stimulation, with various assessments conducted before and after the treatment.
  • Results showed significant improvements in motor function, usage of the affected upper extremity, and reduced muscle tightness, along with positive changes in spinal circuit activity.
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[Purpose] Oxygenated hemoglobin (oxy-Hb) concentrations in the prefrontal cortex are closely associated with dyspnea. Dyspnea is influenced not only by physical activity, but also by visual stimuli, and several studies suggest that oxy-Hb concentrations change in response to certain external stimuli. However, the effects of internal psychological states on dyspnea have not been reported.

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