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Tomohiro Ishii and pianist Akira Ishii have been performing as the "I... "In Search of the Missing Star" is an original composition by violinist Tomohiro Ishii.
- 2 min
- Akira Ishii 石井彰
- Participants
- Experimental Design
- Conditioning Session
- Metronome Sounds
- Subjective Level of Mental Fatigue
- Magnetoencephalography Session
- Magnetoencephalography Analyses
- Magnetic Resonance Imaging Overlay
- Electrocardiography
- Statistical Analyses
Ten healthy male volunteers (aged 21.1 ± 0.3 years [mean ± SEM]) participated in conditioning group and 9 healthy volunteers (aged 36.6 ± 2.4 years; 5 male and 4 female) participated in control group. Current smokers, participants with a history of mental or brain disorder, or those taking chronic medications that affect the central nervous system ...
Conditioning group
Conditioning experiment consisted of two MEG recording sessions and one conditioning session. Participants joined the experiment on two successive days (Figure 1). We used metronome sounds as the conditioned stimuli. On the first day, neural activities while listening to metronome sounds with their eyes closed for 6 min were measured using MEG (first MEG session). Thereafter, fatigue-inducing mental task trials for 60 min were performed without MEG measurement (conditioning session). During t...
Control group
We performed control experiment to confirm that repetitive listening to metronome sounds did not induce the fatigue sensation. Participants in the control group listened to the metronome sounds for six min (first metronome session) but did not perform conditioning session on the first day and listened to the sounds again on the second day (second metronome session). The metronome sounds were the same as that used in the MEG sessions and the conditioning session of the conditioning group. On t...
We used two-back task trials to induce the fatigue sensation and metronome sounds as the conditioned stimuli. During the two-back task trials, one of four letters was presented on a display of a personal computer every 3s and the participants had to judge whether the letter presented on the display at the moment was the same as the one that had app...
The metronome sound was created using a freeware program (Art Metronome; Mu Tech, Nara, Japan; http://mu-tech.co.jp/Japanese/top.htm). The temporal duration of the sound was approximately 600 ms.
The participants were asked to rate their subjective levels of mental fatigue on a visual analogue scale (VAS) from 0 (minimum) to 100 (maximum), immediately before and after the MEG, conditioning, and metronome sessions. After the MEG and metronome sessions, they were asked to rate the levels of the fatigue sensation that was caused by listening t...
We measured neural activities when the participants were listening to the metronome sounds. The MEG recordings on the first day and the second day were conducted in the same manner. MEG recordings were performed using a 160-channel whole-head type MEG system (MEG vision; Yokogawa Electric Corporation, Tokyo, Japan) with a magnetic field resolution ...
Before processing the MEG data, magnetic noise originating from outside the shield room was eliminated by subtracting the data obtained from reference coils using a software program (MEG 160; Yokogawa Electric Corporation). The MEG data acquired on the first and second days were separately averaged offline after analogue-to-digital conversion with ...
Anatomical magnetic resonance imaging (MRI) was performed on all participants using a Philips Achieva 3.0TX (Royal Philips Electronics, Eindhoven, The Netherlands) to permit registration of magnetic source locations with their respective anatomic locations. Before MRI scanning, five adhesive markers (Medtronic Surgical Navigation Technologies Inc.,...
To examine changes of autonomic nerve activities caused by conditioning of the fatigue sensation, ECG was recorded during the MEG measurements. The ECG data were analyzed using MemCalc for Windows (Global Medical Solution Inc., Tokyo, Japan). R-R wave variability was measured as an indicator of autonomic activity. For frequency domain analysis of t...
Values are presented as mean ± SEM, unless otherwise stated. Two-way analysis of variance (ANOVA) for repeated measures were performed to assess the effect of the conditioning and the time course on the subjective level of mental fatigue and the indices of autonomic activities (LF, HF, and LF/HF ratio). The paired t-test was used to evaluate signif...
- Akira Ishii, Masaaki Tanaka, Masayoshi Iwamae, Chongsoo Kim, Emi Yamano, Yasuyoshi Watanabe
- 2013
Jun 15, 2012 · Lead author of the study, Professor Akira Ishii, said: "If a person is reading and commenting on a friend's blog, we consider this as direct communication. If a person...
Dec 5, 2008 · “Synchronized Step” leaps out with a potent left hand line that is accented by right hand chords. It’s a workout. His left hand keeps solid movement with its rhythmic power and gives room for Etoh and Tawarayama to improvise inside. Ishii also lays down a percussive solo that never gets out of step.
May 17, 2022 · M. L. Akira Ishii, chief of the opposition Japan Innovation Party (Nippon Ishin)'s election strategy office for new candidates, delivered a gaffe-laden addr.
Program Notes for NHK Symphony Orchestra Concert No. 1928 (Program C), December 2019. Akira Ishii. 2019.12. Article, review, commentary, editorial, etc. (other ...
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Who is Akira Ishii?
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Who is Nippon Ishii?
The meaning of Ishii. Japanese: usually written 石井 ‘rock well’, also 石居 ‘resides in a rocky place’; the latter is the original meaning. Mostly found in Chiba prefecture and the Tokyo area, it is related to the name Iwai, which has a similar meaning.
