Kouji Takano

Kouji Takano
National Rehabilitation Center for Persons with Disabilities

About

50
Publications
5,374
Reads
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911
Citations
Introduction
Additional affiliations
January 2009 - December 2012
National Rehabilitation Center for the Disabled
January 2007 - present
Tokyo Institute of Technology

Publications

Publications (50)
Article
Full-text available
Rubber hand illusion (RHI), a kind of body ownership illusion, is sometimes atypical in individuals with autism spectrum disorder; however, the brain regions associated with the illusion are still unclear. We previously reported that mice responded as if their own tails were being touched when rubber tails were grasped following synchronous strokin...
Article
Full-text available
Abstract Brain–computer interfaces (BCIs) enable communication with others and allow machines or computers to be controlled in the absence of motor activity. Clinical studies evaluating neural prostheses in amyotrophic lateral sclerosis (ALS) patients have been performed; however, to date, no study has reported that ALS patients who progressed from...
Article
Full-text available
Severe motor impairments can affect the ability to communicate. The ability to see has a decisive influence on the augmentative and alternative communication (AAC) systems available to the user. To better understand the initial impressions users have of AAC systems we asked naïve healthy participants to compare two visual (a visual P300 brain-compu...
Article
Full-text available
Understanding how we consciously experience our bodies is a fundamental issue in cognitive neuroscience. Two fundamental components of this are the sense of body ownership (the experience of the body as one's own) and the sense of agency (the feeling of control over one's bodily actions). These constructs have been used to investigate the incorpora...
Article
Full-text available
A brain-computer interface (BCI) or brain-machine interface is a technology that enables the control of a computer and other external devices using signals from the brain. This technology has been tested in paralysed patients, such as those with cervical spinal cord injuries or amyotrophic lateral sclerosis, but it has not been tested systematicall...
Article
Full-text available
Gaze-independent brain computer interfaces (BCIs) are a potential communication tool for persons with paralysis. This study applies affective auditory stimuli to investigate their effects using a P300 BCI. Fifteen able-bodied participants operated the P300 BCI, with positive and negative affective sounds (PA: a meowing cat sound, NA: a screaming ca...
Article
Full-text available
Objective We investigated the efficacy of a P300-based brain-computer interface (BCI) for patients with spinocerebellar ataxia (SCA), which is often accompanied by cerebellar impairment. Methods Eight patients with SCA and eight age- and gender-matched healthy controls were instructed to input Japanese hiragana characters using the P300-based BCI...
Article
Understanding how we consciously experience our bodies is a fundamental issue in both psychology and neuroscience. To date, the incorporation of nonbody objects into the body representation has been investigated extensively, and the incorporation of prosthetic arms in amputees has been demonstrated using the rubber hand illusion. In this study, we...
Article
Significance statement: To explore the manner in which the ownership of body parts is experienced, this study specifically used the rubber hand illusion (RHI), in which self-consciousness can be extended out of one's own body. Accumulating empirical evidence supports the existence of this concept in humans and nonhuman primates, but it remains unc...
Article
Full-text available
Gaze-independent brain-computer interfaces (BCIs) are a possible communication channel for persons with paralysis. We investigated if it is possible to use auditory stimuli to create a BCI for the Japanese Hiragana syllabary, which has 46 Hiragana characters. Additionally, we investigated if training has an effect on accuracy despite the high amoun...
Article
Feeling ownership of our limbs represents a fundamental aspect of self-consciousness, and in some circumstances, the feeling is extended out of our own body, as in the rubber hand illusion (RHI, Botvinick and Cohen, 1998). In our rubber hand experiment, we used an in-house electromyography (EMG) controlled robotic arm, and evaluated sense of agency...
Article
Full-text available
The visual P300 brain-computer interface (BCI), a popular system for electroencephalography (EEG)-based BCI, uses the P300 event-related potential to select an icon arranged in a flicker matrix. In earlier studies, we used green/blue (GB) luminance and chromatic changes in the P300-BCI system and reported that this luminance and chromatic flicker m...
Article
Full-text available
Amyotrophic lateral sclerosis (ALS) can result in the locked-in state (LIS), characterized by paralysis, and eventual respiratory failure, compensated by artificial ventilation,(1) or the completely LIS (CLIS), with additional total paralysis of eye muscles. Brain-computer interfaces (BCIs) have been used to allow paralyzed people to regain basic c...
Article
The P300-based brain-computer interface (BCI) is designed to help patients with motor disabilities to control their environment, and it has been used successfully in patients with amyotrophic lateral sclerosis (ALS). However, some ALS patients were unable to use the visual P300-BCI with the conventional row/column presentation. In this study, we ev...
Article
Full-text available
Reciprocity plays a key role maintaining cooperation in society. However, little is known about the neural process that underpins human reciprocity during social interactions. Our neuroimaging study manipulated partner identity (computer, human) and strategy (random, tit-for-tat) in repeated prisoner's dilemma games and investigated the neural corr...
Article
Full-text available
A brain-machine interface (BMI) is an interface technology that uses neurophysiological signals from the brain to control external machines. Recent invasive BMI technologies have succeeded in the asynchronous control of robot arms for a useful series of actions, such as reaching and grasping. In this study, we developed non-invasive BMI technologie...
Article
Full-text available
Real-time magnetoencephalography (rtMEG) is an emerging neurofeedback technology that could potentially benefit multiple areas of basic and clinical neuroscience. In the present study, we implemented voxel-based real-time coherence measurements in a rtMEG system in which we employed a beamformer to localize signal sources in the anatomical space pr...
Patent
An EEG measurement electrode for measuring EEG comprises: a base part ; protrusion parts made from rubber and which are disposed to protrude from the base part; and contact parts made from metal, which are disposed on the leading ends of the protrusion parts, electrically connected externally to the EEG measurement electrode, and which make contact...
Article
Full-text available
A non-invasive brain-machine interface (BMI) or brain-computer interface is a technology for helping individuals with disabilities and utilizes neurophysiological signals from the brain to control external machines or computers without requiring surgery. However, when applying electroencephalography (EEG) methodology, users must place EEG electrode...
Article
Full-text available
The visual P300-brain-computer interface, a popular system for EEG-based BCI, utilizes the P300 event-related potential to select an icon arranged in a flicker matrix. In the conventional P300-BCI speller paradigm, white/gray luminance intensification of each row/column in the matrix is used. In an earlier study, we applied green/blue luminance and...
Article
Full-text available
Adopting an unusual posture can sometimes give rise to paradoxical experiences. For example, the subjective ordering of successive unseen tactile stimuli delivered to the two arms can be affected when people cross them. A growing body of evidence now highlights the role played by the parietal cortex in spatio-temporal information processing when se...
Article
Full-text available
The brain-machine interface (BMI) or brain-computer interface is a new interface technology that uses neurophysiological signals from the brain to control external machines or computers. This technology is expected to support daily activities, especially for persons with disabilities. To expand the range of activities enabled by this type of interf...
Article
This study evaluates the efficacy of a P300-based brain-computer interface (BCI) with green/blue flicker matrices for individuals with cervical spinal cord injury (SCI). Ten individuals with cervical SCI (age 26-53, all male) and 10 age- and sex-matched able-bodied controls (age 27-52, all male) with no prior BCI experience were asked to input hira...
Article
A brain-machine interface (BMI) uses neurophysiological signals from the brain to control external devices, such as robot arms or computer cursors. Combining augmented reality with a BMI, we show that the user's brain signals successfully controlled an agent robot and operated devices in the robot's environment. The user's thoughts became reality t...
Article
The white/gray flicker matrix has been used as a visual stimulus for the so-called P300 brain-computer interface (BCI), but the white/gray flash stimuli might induce discomfort. In this study, we investigated the effectiveness of green/blue flicker matrices as visual stimuli. Ten able-bodied, non-trained subjects performed Alphabet Spelling (Japane...
Article
Full-text available
Understanding changes in attitudes towards others is critical to understanding human behaviour. Neuropolitical studies have found that the activation of emotion-related areas in the brain is linked to resilient political preferences, and neuroeconomic research has analysed the neural correlates of social preferences that favour or oppose considerat...
Conference Paper
In this research, to clarify the relation between a cognitive process and a timing structure of utterance, the dialogue that consisted of an instruction and a response utterance was analyzed. The results showed that correlation between duration of instruction utterance and that of switching pause was negative and low value, when a change of utteran...
Article
We clarify internal phase correction mechanisms affecting timing control in a synchronization tapping task. Synchronization error (SE) was directly controlled within 450-1800 ms of the inter stimulusonset interval (ISI) with our experimental method. Two types of internal phase correction mechanism became evident. The first showed a strong negative...
Article
Synchronization tapping is a psychological task for studying timing control mechanism. In this timing mechanism, negative feedback in phase error correction and period error correction has been assumed. The effect of phase error was already measured and its negative feedback process was studied, however the effect of period error has not been clari...
Conference Paper
In recent years, information technology rapidly increases the opportunity of human communication. However, communication supporting systems, such as tele-presence and CSCW, were mainly developed based on physical interaction and not on psychological one. In this article, we analyzed the psychological interaction mechanism of human timing control us...
Conference Paper
In synchronization tapping task, negative asynchrony is known as important matter to analyze human time perception. The system of negative asynchrony is suggested that there are two systems. In this article, we analyze the systems using a controlled SE and a controlled attention. As a result, it is proposed that one system use an attention and the...
Conference Paper
Synchronization tapping task is one of the experimental tasks to research predictive action. In former studies, inter stimulus-onset interval (ISI) was used as a control parameter. However the method cannot investigate the perception process of synchronization error (SE). In this study, we used SE as control parameter. As a result, two types of tim...
Conference Paper
We investigate the mechanism of predictive timing control in synchronization tapping. This is the synchronization task between tap onset and periodic tone onset. As a result, we classified that subjective sequence between tap onset and tone onset can be modified by controlling the time difference between the two onsets. This suggests that predictio...

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