Research Topics
| Tatsuyuki OhtsukiSummaryAffiliation: University of Tokyo Country: Japan Publications
| Collaborators
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Detail Information
Publications
Music performance anxiety in skilled pianists: effects of social-evaluative performance situation on subjective, autonomic, and electromyographic reactionsMichiko Yoshie
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro ku, Tokyo, 153 8902, Japan
Exp Brain Res 199:117-26. 2009....
Control of 3D limb dynamics in unconstrained overarm throws of different speeds performed by skilled baseball playersMasaya Hirashima
Department of Life Sciences Sports Sciences Graduate School of Arts and Sciences, University of Tokyo, 3 8 1 Komaba, Meguro ku, Tokyo 153 8902, Japan
J Neurophysiol 97:680-91. 2007..These results indicates that skilled ball throwers adopted a hierarchical control in which the proximal muscle torques created a dynamic foundation for the entire limb motion and beneficial interaction torques for distal joint rotations...- Exploring the mechanism of skilled overarm throwingMasaya Hirashima
Graduate School of Education, The University of Tokyo, Japan
Exerc Sport Sci Rev 36:205-11. 2008.... - Aging effects on posture-related modulation of stretch reflex excitability in the ankle muscles in humansHiroki Obata
Sports Science Laboratory, Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Japan
J Electromyogr Kinesiol 22:31-6. 2012.... 
Intrinsic constraint of asymmetry acting as a control parameter on rapid, rhythmic bimanual coordination: a study of professional drummers and nondrummersShinya Fujii
Department of Physical and Health Education, Graduate School of Education, The University of Tokyo, Tokyo, Japan
J Neurophysiol 104:2178-86. 2010..These results support the hypothesis indicating that the prominent bimanual coordination pattern emerges spontaneously after a nonspecific change in Δω or symmetry restoration of the nonlinear dynamical systems...- Age-related changes of the stretch reflex excitability in human ankle musclesHiroki Obata
Department of Life Sciences, Graduate School of Arts and Sciences, Sports Science Laboratory, The University of Tokyo, Meguro ku, Tokyo, Japan
J Electromyogr Kinesiol 20:55-60. 2010..The present results indicate that the stretch reflexes of each of the ankle antagonistic muscles are affected differently by aging, which might have relevance to the neural properties of each muscle... - Counteractive relationship between the interaction torque and muscle torque at the wrist is predestined in ball-throwingMasaya Hirashima
Department of Life Sciences (Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
J Neurophysiol 90:1449-63. 2003.... - Enhanced excitability of the corticospinal pathway of the ankle extensor and flexor muscles during standing in humansHiroki Obata
Department of Life Science, Graduate School of Arts and Sciences, University of Tokyo, Meguro ku, Tokyo, Japan
Exp Brain Res 197:207-13. 2009.... - Time-series pattern changes related to movement rate in synchronized human tappingHiroshi Kadota
Laboratory of Sports Sciences, Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3 8 1 Komaba, Meguro, Tokyo 153 8902, Japan
Neurosci Lett 370:97-101. 2004..We inferred that this change in the coordination pattern reflects the transition between different states in human synchronization movements with an external signal... - Selective activation and deactivation of the human brain structures between speeded and precisely timed tapping responses to identical visual stimulus: an fMRI studyKazutoshi Kudo
Department of Life Sciences, Laboratory of Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
Neuroimage 22:1291-301. 2004..This inter- and intramodal task-specific modification including deactivation underscores significance of the context for perception and action and can have an important role in dexterous or skilled performance... - Motor/autonomic stress responses in a competitive piano performanceMichiko Yoshie
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
Ann N Y Acad Sci 1169:368-71. 2009..The results provide important practical implications for enhancing performance quality as well as preventing playing-related musculoskeletal disorders in musicians... - A new non-orthogonal decomposition method to determine effective torques for three-dimensional joint rotationMasaya Hirashima
Department of Life Sciences Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3 8 1 Komaba, Meguro ku, Tokyo 153 8902, Japan
J Biomech 40:871-82. 2007.... - Relationship between muscle cocontraction and proficiency in whole-body sensorimotor synchronization: a comparison study of street dancers and nondancersAkito Miura
Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
Motor Control 17:18-33. 2013..These results show that the level of muscle cocontraction in the lower limbs during whole-body sensorimotor synchronization movement is associated with the degree of proficiency of the movement... - Relationship between muscle cocontraction and proficiency in whole-body sensorimotor synchronization: a comparison study of street dancers and nondancersAkita Miura
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
Motor Control 17:18-33. 2013..These results show that the level of muscle cocontraction in the lower limbs during whole-body sensorimotor synchronization movement is associated with the degree of proficiency of the movement... - Coordination modes in sensorimotor synchronization of whole-body movement: a study of street dancers and non-dancersAkito Miura
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Japan
Hum Mov Sci 30:1260-71. 2011..These findings suggest that down and up movements are two distinguishable coordination modes in whole-body coordination, and that street dancers have superior whole-body SMS ability... - Variability and fluctuation in running gait cycle of trained runners and non-runnersYosuke Nakayama
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
Gait Posture 31:331-5. 2010..These results suggest that expert runners can reduce variability in the trained movement without loosing dynamical degrees of freedom for spatiotemporal organization of the gait pattern... - 'Initial state' coordinations reproduce the instant flexibility for human walkingAkane Ohgane
Department of Life Sciences, The University of Tokyo, Komaba 3 8 1, Tokyo, 153 8902, Japan
Biol Cybern 93:426-35. 2005..We hypothesize that flexibility is achieved by modulating the posture at the beginning of the stance phase-the initial state. Using a walking model, we validate our hypothesis through computer simulations... - The effect of visual transformation on bimanual circling movementSaeka Tomatsu
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3 8 1 Komaba, Meguro ku, Tokyo 153 8902, Japan
Exp Brain Res 166:277-86. 2005..The effect size of visual transformation was larger in the 90 degrees and 270 degrees modes than in the 180 degrees mode. It is thus concluded that the effect of visual transformation depends upon the difficulty of the movement task... - Hysteresis in corticospinal excitability during gradual muscle contraction and relaxation in humansToshitaka Kimura
Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3 8 1 Komaba, Meguro ku, 153 8902 Tokyo, Japan
Exp Brain Res 152:123-32. 2003..This suggests that corticospinal excitability modulation depends not only on concurrent spinal motoneuronal activity and muscle tension but also on the time-series pattern of their changes during muscle contraction and relaxation...