Papers by Yutaka Oouchida
Scientific Reports, Aug 2, 2022
Bookmarks Related papers MentionsView impact
Scientific Reports
Patients with lower limb amputation experience “embodiment” while using a prosthesis, perceiving ... more Patients with lower limb amputation experience “embodiment” while using a prosthesis, perceiving it as part of their body. Humans control their biological body parts and receive appropriate information by directing attention toward them, which is called body-specific attention. This study investigated whether patients with lower limb amputation similarly direct attention to prosthetic limbs. The participants were 11 patients with lower limb amputation who started training to walk with a prosthesis. Attention to the prosthetic foot was measured longitudinally by a visual detection task. In the initial stage of walking rehabilitation, the index of attention to the prosthetic foot was lower than that to the healthy foot. In the final stage, however, there was no significant difference between the two indexes of attention. Correlation analysis revealed that the longer the duration of prosthetic foot use, the greater the attention directed toward it. These findings indicate that using a ...
Bookmarks Related papers MentionsView impact
Frontiers in Systems Neuroscience, 2021
Learned nonuse is a major problem in upper limb (UL) rehabilitation after stroke. Among the vario... more Learned nonuse is a major problem in upper limb (UL) rehabilitation after stroke. Among the various factors that contribute to learned nonuse, recent studies have focused on body representation of the paretic limb in the brain. We previously developed a method to measure body-specific attention, as a marker of body representation of the paretic limb and revealed a decline in body-specific attention to the paretic limb in chronic stroke patients by a cross-sectional study. However, longitudinal changes in body-specific attention and paretic arm use in daily life (real-world arm use) from the onset to the chronic phase, and their relationship, remain unknown. Here, in a longitudinal, prospective, observational study, we sought to elucidate the longitudinal changes in body-specific attention to the paretic limb and real-world arm use, and their relationship, by using accelerometers and psychophysical methods, respectively, in 25 patients with subacute stroke. Measurements were taken at...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Higher Brain Function Research, 2016
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Journal of The Society of Instrument and Control Engineers, 2017
Bookmarks Related papers MentionsView impact
The Japanese Journal of Psychonomic Science, 2017
Bookmarks Related papers MentionsView impact
2012 ICME International Conference on Complex Medical Engineering (CME), 2012
Phantom limb pain is caused by the abnormality of the body schema. It is known that the mirror th... more Phantom limb pain is caused by the abnormality of the body schema. It is known that the mirror therapy is one of the most effective ways for reducing the phantom limb pain by using the visual information of the intact limb as the visual feedback of the amputated one, with looking through the mirror. This mirror therapy, however, works only for amputees with single limb amputation, because mirror therapy needs the vision of intact limb. Here, we tried to use the vision of the limb of another person as the visual feedback of the amputated limb by imitation movement and we reports that imitation movement could reduce the phantom limb pain of the amputee with bilateral lower limbs and left upper limb amputation by performing imitation movements.
Bookmarks Related papers MentionsView impact
The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Background:Imitative learning is highly effective from infancy to old age, but little is known ab... more Background:Imitative learning is highly effective from infancy to old age, but little is known about the effects of observing errors during imitative learning. This study aims to examine how observing errors affect imitative learning performance, to maximize the effects of imitative learning. Method:In the pre-training session, participants were instructed to pinch at the target force (8 N) with auditory feedback about generated force while watching videos of someone pinching a sponge at the target force. In the pre-test, participants pinched at the target force without viewing a model or receiving auditory feedback. In Experiment 1, in the main training session, participants imitated models while watching videos of pinching at either the incorrect force (error-mixed condition) or the target force (all-correct condition). Then, the exact force they generated in pinching was measured without receiving auditory feedback or viewing a model. In Experiment 2, using the same procedure in ...
Bookmarks Related papers MentionsView impact
Izumi S, Oouchida Y, Okita T, Suzuki E, Abe T, Nagatomi R, Nakasato N, Takagi T. Development of a... more Izumi S, Oouchida Y, Okita T, Suzuki E, Abe T, Nagatomi R, Nakasato N, Takagi T. Development of an integration circuit to measure pulsed magnetic field: evaluation of its usefulness by comparing measured with theoretical magnetic field structure. Jpn J Compr Rehabil Sci 2012; 3: 42-50. Objective: To develop a search coil with a capacityresistor (CR) integration circuit for instantaneous measurement of a pulsed magnetic field, and to compare the magnetic field structure measured by the novel device with the theoretical values. Methods: The integration circuit consists of a capacitor and a resistor connected in series, and generates a voltage output across the capacitor. For magnetic field measurement, we selected capacitance × resistance = 4 ms. Using the search coil and CR integration circuit, we measured the magnetic flux density generated by a circular coil, over a range of magnetic flux densities (0.1 to 1.4 T) and pulse widths (0.1 to 0.6 ms). We also obtained the corresponding ...
Bookmarks Related papers MentionsView impact
Brain and nerve = Shinkei kenkyu no shinpo, 2014
The discovery of the mirror neuron system has dramatically changed the study of motor control in ... more The discovery of the mirror neuron system has dramatically changed the study of motor control in neuroscience. The mirror neuron system provides a conceptual framework covering the aspects of motor as well as sensory functions in motor control. Previous studies of motor control can be classified as studies of motor or sensory functions, and these two classes of studies appear to have advanced independently. In rehabilitation requiring motor learning, such as relearning movement after limb paresis, however, sensory information of feedback for motor output as well as motor command are essential. During rehabilitation from chronic pain, motor exercise is one of the most effective treatments for pain caused by dysfunction in the sensory system. In rehabilitation where total intervention unifying the motor and sensory aspects of motor control is important, learning through imitation, which is associated with the mirror neuron system can be effective and suitable. In this paper, we introd...
Bookmarks Related papers MentionsView impact
Neurology
ObjectiveTo examine whether reduced body-specific attention to a paretic limb is found in chronic... more ObjectiveTo examine whether reduced body-specific attention to a paretic limb is found in chronic stroke patients in a time-dependent manner.MethodsTwenty-one patients with chronic hemiparesis (10 left and 11 right hemiparesis) after subcortical stroke and 18 age-matched healthy controls were recruited in this study. Standard neuropsychological examinations showed no clear evidence of spatial neglect in any patient. In order to quantitatively measure spatial attention to the paretic hand, a visual detection task for detecting a target appearing on the surface of either a paretic or dummy hand was used. This task can measure the body facilitation effect, which makes faster detection of a target on the body compared with one far from the body.ResultsIn stroke patients, there was no difference in the reaction time for a visual target between the paretic and the dummy hands, while the healthy participants showed faster detection for the visual target on the real hand than on the dummy o...
Bookmarks Related papers MentionsView impact
Frontiers in Human Neuroscience
Bookmarks Related papers MentionsView impact
Case reports in medicine, 2018
The aim of the study was to investigate the effect of cathodal transcranial direct current stimul... more The aim of the study was to investigate the effect of cathodal transcranial direct current stimulation to the supplementary motor area to inhibit involuntary movements of a child. An 8-year-old boy who developed hypoxic encephalopathy after asphyxia at the age of 2 had difficulty in remaining standing without support because of involuntary movements. He was instructed to remain standing with his plastic ankle-foot orthosis for 10 s at three time points by leaning forward with his forearms on a desk. He received cathodal or sham transcranial direct current stimulation to the supplementary motor area at 1 mA for 10 min. Involuntary movements during standing were measured using an accelerometer attached to his forehead. The low-frequency power of involuntary movements during cathodal transcranial direct current stimulation significantly decreased compared with that during sham stimulation. No adverse effects were observed. Involuntary movement reduction by cathodal stimulation to suppl...
Bookmarks Related papers MentionsView impact
Advanced Robotics, 2016
Bookmarks Related papers MentionsView impact
Brain and nerve = Shinkei kenkyū no shinpo, 2014
The discovery of the mirror neuron system has dramatically changed the study of motor control in ... more The discovery of the mirror neuron system has dramatically changed the study of motor control in neuroscience. The mirror neuron system provides a conceptual framework covering the aspects of motor as well as sensory functions in motor control. Previous studies of motor control can be classified as studies of motor or sensory functions, and these two classes of studies appear to have advanced independently. In rehabilitation requiring motor learning, such as relearning movement after limb paresis, however, sensory information of feedback for motor output as well as motor command are essential. During rehabilitation from chronic pain, motor exercise is one of the most effective treatments for pain caused by dysfunction in the sensory system. In rehabilitation where total intervention unifying the motor and sensory aspects of motor control is important, learning through imitation, which is associated with the mirror neuron system can be effective and suitable. In this paper, we introd...
Bookmarks Related papers MentionsView impact
International Journal of Physical Medicine & Rehabilitation, 2013
Bookmarks Related papers MentionsView impact
Uploads
Papers by Yutaka Oouchida