研究者詳細 - 藤井　進也

論文 - 藤井　進也

分割表示 83 件中 41 - 60 件目／全件表示 >>

Perceptual vs. automated judgments of music copyright infringement

Yuan Y., Oishi S., Cronin C., Müllensiefen D., Atkinson Q. D., Fujii S., Savage P. E.

Proceedings of the 21st International Society for Music Information Retrieval Conference (ISMIR 2020) （ISMIR） 23 - 29 2020年10月

研究論文（国際会議プロシーディングス）, 共著, 査読有り

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Resting-state isolated effective connectivity of the cingulate cortex as a neurophysiological biomarker in patients with severe treatment-resistant schizophrenia

Wada M., Nakajima S., Tarumi R., Masuda F., Miyazaki T., Tsugawa S., Ogyu K., Honda S., Matsushita K., Kikuchi Y., Fujii S., Blumberger D.M., Daskalakis Z.J., Mimura M., Noda Y.

Journal of Personalized Medicine （Journal of Personalized Medicine） 10 （ 3 ） 1 - 12 2020年08月

研究論文（学術雑誌）, 査読有り

Background: The neural basis of treatment-resistant schizophrenia (TRS) remains unclear. Previous neuroimaging studies suggest that aberrant connectivity between the anterior cingulate cortex (ACC) and default mode network (DMN) may play a key role in the pathophysiology of TRS. Thus, we aimed to examine the connectivity between the ACC and posterior cingulate cortex (PCC), a hub of the DMN, computing isolated effective coherence (iCoh), which represents causal effective connectivity. Methods: Resting-state electroencephalogram with 19 channels was acquired from seventeen patients with TRS and thirty patients with non-TRS (nTRS). The iCoh values between the PCC and ACC were calculated using sLORETA software. We conducted four-way analyses of variance (ANOVAs) for iCoh values with group as a between-subject factor and frequency, directionality, and laterality as within-subject factors and post-hoc independent t-tests. Results: The ANOVA and post-hoc t-tests for the iCoh ratio of directionality from PCC to ACC showed significant findings in delta (t = 7.659, p = 0.008) and theta (t = 8.066, p = 0.007) bands in the left side (TRS < nTRS). Conclusion: Left delta and theta PCC and ACC iCoh ratio may represent a neurophysiological basis of TRS. Given the preliminary nature of this study, these results warrant further study to confirm the importance of iCoh as a clinical indicator for treatment-resistance. 45 45

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Thalamic and striato-pallidal volumes in schizophrenia patients and individuals at risk for psychosis: A multi-atlas segmentation study

Takahashi T., Tsugawa S., Nakajima S., Plitman E., Chakravarty M.M., Masuda F., Wada M., Kurose S., Ochi R., Matsushita K., Sasabayashi D., Nakamura M., Nishikawa Y., Takayanagi Y., Nishiyama S., Higuchi Y., Mizukami Y., Furuichi A., Kido M., Hashimoto R., Noguchi K., Fujii S., Mimura M., Noda Y., Suzuki M.

Schizophrenia Research （Elsevier） 243 268 - 275 2020年05月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 09209964

Despite previous neuroimaging studies demonstrating morphological abnormalities of the thalamus and other subcortical structures in patients with schizophrenia, the potential role of the thalamus and its subdivisions in the pathophysiology of this illness remains elusive. It is also unclear whether similar changes of these structures occur in individuals at high risk for psychosis. In this study, magnetic resonance imaging was employed with the Multiple Automatically Generated Templates (MAGeT) brain segmentation algorithm to determine volumes of the thalamic subdivisions, the striatum (caudate, putamen, and nucleus accumbens), and the globus pallidus in 62 patients with schizophrenia, 38 individuals with an at-risk mental state (ARMS) [4 of whom (10.5%) subsequently developed schizophrenia], and 61 healthy subjects. Cognitive function of the patients was assessed by using the Brief Assessment of Cognition in Schizophrenia (BACS) and the Schizophrenia Cognition Rating Scale (SCoRS). Thalamic volume (particularly the medial dorsal and ventral lateral nuclei) was smaller in the schizophrenia group than the ARMS and control groups, while there were no differences for the striatum and globus pallidus. In the schizophrenia group, the reduction of thalamic ventral lateral nucleus volume was significantly associated with lower BACS score. The pallidal volume was positively correlated with the dose of antipsychotic treatment in the schizophrenia group. These results suggest that patients with schizophrenia, but not those with ARMS, exhibit volume reduction in specific thalamic subdivisions, which may underlie core clinical features of this illness.

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Using Non-Negative Matrix Factorization to Examine Treatment Resistance and Response in Patients With Schizophrenia: A Multimodal Imaging Study

Plitman Eric, Ochi Ryo, Patel Raihaan, Tsugawa Sakiko, Tarumi Ryosuke, Honda Shiori, Matsushita Karin, Fujii Shinya, Uchida Hiroyuki, Mimura Masaru, Noda Yoshihiro, Devenyi Gabriel A., Nakajima Shinichiro, Chakravarty Mallar

BIOLOGICAL PSYCHIATRY 87 （ 9 ） S350 - S350 2020年05月

査読有り, ISSN 0006-3223

Proximal Binaural Sound Can Induce Subjective Frisson

Honda S, Ishikawa Y, Konno R, Imai E, Nomiyama N, Sakurada K, Koumura T, Kondo HM, Furukawa S, Fujii S, Nakatani M

Frontiers in Psychology （Frontiers） 11 （ 316 ） 1 - 11 2020年03月

研究論文（学術雑誌）, 共著, 査読有り

Levels of Glutamatergic Neurometabolites in Patients with Severe Treatment-resistant Schizophrenia: A Proton Magnetic Resonance Spectroscopy Study

Tarumi R, Tsugawa S, Noda Y, Plitman E, Honda S, Matsushita K, Chavez S, Sawada K, Wada M, Matsui M, Fujii S, Miyazaki T, Chakravarty MM, Uchida H, Remington G, Graff-Guerrero A, Mimura M, Nakajima S

Neuropsychopharmacology （Springer Nature） 45 632 - 640 2020年03月

研究論文（学術雑誌）, 共著, 査読有り

Approximately 30% of patients with schizophrenia do not respond to antipsychotics and are thus considered to have treatment-resistant schizophrenia (TRS). To date, only four studies have examined glutamatergic neurometabolite levels using proton magnetic resonance spectroscopy (1H-MRS) in patients with TRS, collectively suggesting that glutamatergic dysfunction may be implicated in the pathophysiology of TRS. Notably, the TRS patient population in these studies had mild-to-moderate illness severity, which is not entirely reflective of what is observed in clinical practice. In this present work, we compared glutamate + glutamine (Glx) levels in the dorsal anterior cingulate cortex (dACC) and caudate among patients with TRS, patients with non-TRS, and healthy controls (HCs), using 3T 1H-MRS (PRESS, TE = 35 ms). TRS criteria were defined by severe positive symptoms (i.e., ≥5 on 2 Positive and Negative Syndrome Scale (PANSS)-positive symptom items or ≥4 on 3 PANSS-positive symptom items), despite standard antipsychotic treatment. A total of 95 participants were included (29 TRS patients [PANSS = 111.2 ± 20.4], 33 non-TRS patients [PANSS = 49.8 ± 13.7], and 33 HCs). dACC Glx levels were higher in the TRS group vs. HCs (group effect: F[2,75] = 4.74, p = 0.011; TRS vs. HCs: p = 0.012). No group differences were identified in the caudate. There were no associations between Glx levels and clinical severity in either patient group. Our results are suggestive of greater heterogeneity in TRS relative to non-TRS with respect to dACC Glx levels, necessitating further research to determine biological subtypes of TRS.

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Wearable Strain Sensor Suit for Infants to Measure Limb Movements under Interaction with Caregiver

Fujii S, Watanabe H, Taga G

Infant Behavior and Development （Elsevier Inc.） 58 （ 101418 ） 1 - 10 2020年02月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 01636383

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White Matter Microstructural Organizations in Patients with Severe Treatment-resistant Schizophrenia: A Diffusion Tensor Imaging Study

Ochi R, Noda Y, Tsuchimoto S, Tarumi R, Honda S, Matsushita K, Tsugawa S, Plitman E, Masuda F, Ogyu K, Wada M, Miyazaki T, Fujii S, Chakravarty MM, Graff-Guerrero A, Uchida H, Mimura M, Nakajima S

Progress in Neuropsychopharmacology & Biological Psychiatry （Elsevier Inc.） 100 （ 109871 ） 109871 - 109871 2020年01月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0278-5846

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Approach-oriented Coping Strategy Level May be Related to Volume of the Whole Hippocampus in the Elderly

Kida H, Nakajima S, Shikimoto R, Ochi R, Noda Y, Tsugawa S, Fujii S, Takayama M, Mimura M, Niimura H,

Psychiatry and Clinical Neurosciences （John Wiley & Sons, Inc.） 74 （ 4 ） 270 - 276 2020年01月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 13231316

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Rhythm, synchrony, and cooperation

Savage P. E., Yamauchi M., Hamaguchi M., Tarr B., Kitayama Y., Fujii S.

PsyArXiv preprint 2020年

研究論文（その他学術会議資料等）, 共著

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Automatic acoustic analyses quantify variation in pitch structure within and between human music

Sato S., McBride J. M., Pfordresher P. Q., Tierney A. T., Six J., Fujii S., Savage P. E.

PsyArXiv preprint 2020年

研究論文（その他学術会議資料等）, 共著

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Glutamatergic Neurometabolite Levels in Patients With Severe Treatment-Resistant Schizophrenia: A Cross-Sectional 3T Proton Magnetic Resonance Spectroscopy Study

Nakajima Shinichiro, Tsugawa Sakiko, Noda Yoshihiro, Plitman Eric, Honda Shiori, Matsushita Karin, Chavez Sofia, Sawada Kyosuke, Wada Masataka, Matsui Mie, Fujii Shinya, Miyazaki Takahiro, Chakravarty Mallar, Uchida Hiroyuki, Remington Gary, Graff Ariel, Mimura Masaru

NEUROPSYCHOPHARMACOLOGY 44 （ SUPPL 1 ） 471 - 472 2019年12月

査読有り, ISSN 0893-133X

Glutamatergic neurometabolite levels in patients with severe treatment-resistant schizophrenia: A cross-sectional 3t proton magnetic resonance spectroscopy study

Tarumi R., Sakiko T., Noda Y., Plitman E., Honda S., Matsushita K., Chavez S., Sawada K., Wada M., Matsui M., Fujii S., Miyazaki T., Chakravarty M., Uchida H., Remington G., Graff-Guerrero A., Mimura M., Nakajima S.

EUROPEAN NEUROPSYCHOPHARMACOLOGY 29 S279 - S280 2019年12月

ISSN 0924-977X

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Automatic Comparison of Human Music, Speech, and Bird Song Suggests Uniqueness of Human Scales

Kuroyanagi J, Sato S, Ho MJ, Chiba G, Six J, Pfordresher P, Tierney A, Fujii S, Savage PE

Proceedings of the 9th International Workshop on Folk Music Analysis (FMA2019) 35 - 40 2019年07月

研究論文（国際会議プロシーディングス）, 共著, 査読有り

The uniqueness of human music relative to speech and animal song has been extensively debated, but rarely directly measured. We applied an automated scale analysis algorithm to a sample of 86 recordings of human music, human speech, and bird songs from around the world. We found that human music throughout the world uniquely emphasized scales with small-integer frequency ratios, particularly a perfect 5th (3:2 ratio), while human speech and bird song showed no clear evidence of consistent scale-like tunings. We speculate that the uniquely human tendency toward scales with small-integer ratios may relate to the evolution of synchronized group performance among humans.

Automatic Comparison of Global Children’s and Adult Songs Supports a Sensorimotor Hypothesis for the Origin of Musical Scales

Sato S, Six J, Pfordresher P, Fujii S, Savage PE

Proceedings of the 9th International Workshop on Folk Music Analysis (FMA2019) 41 - 46 2019年07月

研究論文（国際会議プロシーディングス）, 査読有り

Music throughout the world varies greatly, yet some musical features like scale structure display striking crosscultural similarities. Are there musical laws or biological constraints that underlie this diversity? The “vocal mistuning” hypothesis proposes that cross-cultural regularities in musical scales arise from imprecision in vocal tuning, while the integer-ratio hypothesis proposes that they arise from perceptual principles based on psychoacoustic consonance. In order to test these hypotheses, we conducted automatic comparative analysis of 100 children’s and adult songs from throughout the world. We found that children’s songs tend to have narrower melodic range, fewer scale degrees, and less precise intonation than adult songs, consistent with motor limitations due to their earlier developmental stage. On the other hand, adult and children’s songs share some common tuning intervals at small-integer ratios, particularly the perfect 5th (~3:2 ratio). These results suggest that some widespread aspects of musical scales may be caused by motor constraints, but also suggest that perceptual preferences for simple integer ratios might contribute to cross-cultural regularities in scale structure. We propose a “sensorimotor hypothesis” to unify these competing theories.

Proximal Binaural Sound Can Induce Subjective Frisson

Honda S, Ishikawa Y, Konno R, Imai E, Nomiyama N, Sakurada K, Koumura T, Kondo HM, Furukawa S, Fujii S, Nakatani M

arXiv （arXiv） 2019年04月

研究論文（学術雑誌）, 共著, 査読有り

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The Thermal Feedback Influencer: Wearable Thermal Display for Enhancing the Experience of Music Listening

Ishikawa Y., Kawazoe A., Chernyshov G., Fujii S., Nakatani M.

Lecture Notes in Electrical Engineering （Lecture Notes in Electrical Engineering） 535 162 - 168 2019年

This paper describes a new wearable thermal display, the Thermal Feedback Influencer, that can provide chilling stimuli to the skin in order to enhance emotional experiences of music listening. We developed a prototype device that can be attached to behind the ear. The device is designed to be small and lightweight enough to be worn comfortably. In this work, we describe basic concepts of this research, preliminary test results, details and evaluation of the developed prototype. We also summarize methods to provide thermal feedback with music and discuss the possible applications and future research plans.