The University of Tokyo · 신경과학
류 오하타 교수의 연구실은 뇌가 행동의 주체임을 인지하는 '자기성 경험'(sense of agency)과 그 신경 기반을 연구합니다. 특히 말을 통해 발생하는 자기성 경험의 하부구조와 상부구조, 즉 감각운동적 상호작용과 자아 정체성 인식이 어떻게 통합되는지 다룹니다. 또한 운전과 같은 복잡한 운동 기술의 학습과 적응 과정에서 뇌가 내재된 모델을 전환하는 신경 메커니즘을 MEG와 체성영역 분석을 통해 규명하고 있습니다. 이 연구들은 정신질환, 특히 청각환각과 연관된 자기성 이상의 기초를 제공합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The sense of agency is defined as the subjective experience that "I" am the one who is causing the action. Theoretical studies postulate that this subjective experience is developed through multistep processes extending from the sensorimotor to the cognitive level. However, it remains unclear how the brain processes such different levels of information and constitutes the neural substrates for the sense of agency. To answer this question, we combined two strategies: an experimental paradigm, in
Car driving is supported by perceptual, cognitive, and motor skills trained through continuous daily practice. One of the skills that characterize experienced drivers is to detect changes in the driving environment and then flexibly switch their driving modes in response to the changes. Previous functional neuroimaging studies on motor control investigated the mechanisms underlying behaviors adaptive to changes in control properties or parameters of experimental devices such as a computer mouse
Neural activity prior to movement onset contains essential information for predictive assistance for humans using brain-machine-interfaces (BMIs). Even though previous studies successfully predicted different goals for upcoming movements, it is unclear whether non-invasive recording signals contain the information to predict trial-by-trial behavioral variability under the same movement. In this paper, we examined the predictability of subsequent short or long reaction times (RTs) from magnetoenc
The subjective experience of causing an action is known as the sense of agency. Dysfunctional sense of agency over speech has been suggested as a cause of auditory hallucinations. However, agency over speech has not been extensively characterized in previous empirical studies. Here, we manipulated self-voice identity, an indicator of self, embedded in the acoustic quality of voice and examined implicit and explicit measures of the sense of agency. Experiment 1 (<i>N</i> = 29 adults) demonstrated
Abstract The subjective experience of causing an action is known as the sense of agency. Dysfunction in the sense of agency has been suggested as a cause of auditory hallucinations (AHs), an important diagnostic criterion for schizophrenia. However, agency over speech has not been extensively characterized in previous empirical studies. Here, we examine both implicit and explicit measures of the sense of agency and reveal bottom-up and top-down components that constitute self-agency during speec
People instantly recognize their own voice during speech, and this self-generated auditory feedback helps shape their sense of agency (SoA), the conscious perception of themselves as agents of their speech acts. Although the role of sensorimotor mechanisms in SoA is well-established, how hearing one’s voice relates to this process remains unclear. We investigated the retrospective influence of self-voice identity on the implicit feeling and explicit judgment of agency using a key-press paradigm
Abstract A sense of agency can be defined as a subjective experience that I am the one who is causing or generating an action. Several brain regions have been proposed as neural substrates of the subjective experience; however, how the information is processed and organized by each region to achieve the sense of agency still remains unclear. In this study, we have clarified the neural representations corresponding to three processes namely, sensorimotor error, feeling of agency, and judgment of
Abstract Car driving is supported by motor skills trained through continuous daily practice. One of the skills unique to expert drivers is the ability to detect abrupt changes in the driving environment and then quickly adapt their operation mode to the changes. Previous functional neuroimaging studies on motor control investigated the mechanisms underlying behaviors adaptive to changes in control properties of simple experimental devices such as a computer mouse or a joystick. The switching of
People instantly recognize their own voice during speech, and this self-generated auditory feedback helps shape their sense of agency (SoA), the conscious perception of themselves as agents of their speech acts. Although the role of sensorimotor mechanisms in SoA is well-established, how hearing one's voice as an outcome of speech influences SoA remains unclear. Here, we investigated the retrospective influence of self-voice on implicit feelings and explicit judgments of agency, conducting a ser
All living organisms, including humans, must flexibly adjust their defensive behaviors according to the spatial proximity of potential threats. Previous research has examined fear responses to proximal threats by manipulating distance to the body in simulated 2D or 3D environments; however, the functional role of the sense of bodily self in the interplay between fear and threat proximity remains unclear. Here, we investigated fear responses to proximal and distal fear-relevant stimuli while mani
