研究者業績

大貫 良幸

Yoshiyuki Onuki

基本情報

所属
自治医科大学 医学部 脳神経外科学講座 講師
学位
Ph.D.(Erasmus University Rotterdam)

J-GLOBAL ID
201801010399817254
researchmap会員ID
B000307861

研究キーワード

 5

論文

 14
  • Chaoyi Qin, Frederic Michon, Yoshiyuki Onuki, Yohei Ishishita, Keisuke Otani, Kensuke Kawai, Pascal Fries, Valeria Gazzola, Christian Keysers
    Cell reports 42(11) 113432-113432 2023年11月13日  
    The action observation network (AON) has been extensively studied using short, isolated motor acts. How activity in the network is altered when these isolated acts are embedded in meaningful sequences of actions remains poorly understood. Here we utilized intracranial electrocorticography to characterize how the exchange of information across key nodes of the AON-the precentral, supramarginal, and visual cortices-is affected by such embedding and the resulting predictability. We found more top-down beta oscillation from precentral to supramarginal contacts during the observation of predictable actions in meaningful sequences compared to the same actions in randomized, and hence less predictable, order. In addition, we find that expectations enabled by the embedding lead to a suppression of bottom-up visual responses in the high-gamma range in visual areas. These results, in line with predictive coding, inform how nodes of the AON integrate information to process the actions of others.
  • Shinichi Kumagai, Tomoyo Isoguchi Shiramatsu, Akane Matsumura, Yohei Ishishita, Kenji Ibayashi, Yoshiyuki Onuki, Kensuke Kawai, Hirokazu Takahashi
    Brain Stimulation 16(5) 1476-1485 2023年9月  
  • Efe Soyman, Rune Bruls, Kalliopi Ioumpa, Laura Müller-Pinzler, Selene Gallo, Chaoyi Qin, Elisabeth C W van Straaten, Matthew W Self, Judith C Peters, Jessy K Possel, Yoshiyuki Onuki, Johannes C Baayen, Sander Idema, Christian Keysers, Valeria Gazzola
    eLife 11 2022年11月3日  
    Based on neuroimaging data, the insula is considered important for people to empathize with the pain of others. Here we present intracranial electroencephalographic (iEEG) recordings and single-cell recordings from the human insulae while 7 epilepsy patients rated the intensity of a woman's painful experiences seen in short movie clips. Pain had to be deduced from seeing facial expressions or a hand being slapped by a belt. We found activity in the broadband 20-190 Hz range correlated with the trial-by-trial perceived intensity in the insula for both types of stimuli. Within the insula, some locations had activity correlating with perceived intensity for our facial expressions but not for our hand stimuli, others only for our hand but not our face stimuli, and others for both. The timing of responses to the sight of the hand being hit is best explained by kinematic information; that for our facial expressions, by shape information. Comparing the broadband activity in the iEEG signal with spiking activity from a small number of neurons and an fMRI experiment with similar stimuli, revealed a consistent spatial organization, with stronger associations with intensity more anteriorly, while viewing the hand being slapped.
  • Shinichi Kumagai, Takeshi Nakajima, Kuniko Shimazaki, Takeharu Kakiuchi, Norihiro Harada, Hiroyuki Ohba, Yoshiyuki Onuki, Naomi Takino, Mika Ito, Makoto Sato, Sachie Nakamura, Hitoshi Osaka, Takanori Yamagata, Kensuke Kawai, Shin-Ichi Muramatsu
    The journal of gene medicine 25(1) e3457 2022年10月24日  
    BACKGROUND: The delivery of adeno-associated virus (AAV) vectors via the cerebrospinal fluid (CSF) has emerged as a valuable method for widespread transduction in the central nervous system. While infusion into the cerebral ventricles is a common protocol in preclinical studies of small animals, the cisterna magna has been recognized as an alternative target for clinical studies, as it can be reached in a less invasive manner using an intrathecal catheter via the subarachnoid space from a lumbar puncture. METHODS: We evaluated the early distribution of fluorine-18-labeled AAV9 vectors infused into the lateral ventricle or cisterna magna of four non-human primates using positron emission tomography. The expression of the green fluorescent protein was immunohistochemically determined. RESULTS: In both approaches, the labeled vectors diffused into the broad arachnoid space around the brain stem and cervical spinal cord within 30 mins. Both infusion routes efficiently transduced neurons in the cervical spinal cord. CONCLUSIONS: For gene therapy that primarily targets the cervical spinal cord and brainstem, such as amyotrophic lateral sclerosis, cisterna magna infusion would be a feasible and effective administration method.
  • Yoshiyuki Onuki, Oti Lakbila-Kamal, Bo Scheffer, Eus J W Van Someren, Ysbrand D Van der Werf
    The Journal of neuroscience : the official journal of the Society for Neuroscience 2022年8月19日  
    Tactile sensations can bias visual perception in the awake state while visual sensitivity is known to be facilitated by sleep. It remains unknown, however, whether the tactile sensation during sleep can bias the visual improvement after sleep. Here, we performed nap experiments in human participants (n = 56, 18 males, 38 females) to demonstrate that repetitive tactile motion stimulation on the fingertip during slow wave sleep selectively enhanced subsequent visual motion detection. The visual improvement was associated with slow wave activity. The high activation at the high beta frequency was found in the occipital electrodes after the tactile motion stimulation during sleep, indicating a visual-tactile cross-modal interaction during sleep. Furthermore, a second experiment (n = 14, 14 females) to examine whether a hand- or head-centered coordination is dominant for the interpretation of tactile motion direction showed that the biasing effect on visual improvement occurs according to the hand-centered coordination. These results suggest that tactile information can be interpreted during sleep, and can induce the selective improvement of post-sleep visual motion detection.Significant statement:Tactile sensations can bias our visual perception as a form of cross-modal interaction. However, it was reported only in the awake state. Here we show that repetitive directional tactile motion stimulation on the fingertip during slow wave sleep selectively enhanced subsequent visual motion perception. Moreover, the visual improvement was positively associated with sleep slow wave activity. The tactile motion stimulation during slow wave activity increased the activation at the high beta frequency over the occipital electrodes. The visual improvement occurred in agreement with a hand-centered reference frame. These results suggest that our sleeping brain can interpret tactile information based on a hand-centered reference frame, which can cause the sleep-dependent improvement of visual motion detection.

MISC

 23

共同研究・競争的資金等の研究課題

 7