Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Shuji Mori Last modified date:2020.01.27

Professor / Intelligent Science Division / Department of Informatics / Faculty of Information Science and Electrical Engineering


Papers
1. Futakuchi, S., Kusano, T., & Mori, S. (2001). Reexamination of frequency uncertainty of signal tones and attentional effects of preceding stimuli in intensity discrimination of pure tones. Journal of the Acoustical Society of Japan, Vol.57, p.389-397..
2. Shuji Mori, Reaction times and anticipatory skills of karate athletes, Human Movement Science, Vol.21, p.213-220, 2002.06.
3. Shuji Mori, Spatial frequency uncertainty and cueing effects on psychometric functions for contrast detection, Psychonomic Bulletin & Review, Vol.9, No.2, p.270-277, 2002.06.
4. Ishihara, M., Imanaka, K., Mori, S., Lateralized Effects of target localization on reaction times when preparing for manual aiming at a visual target, Human Movement Science, Vol.21, p.563-582, 2002.12.
5. Mori, S., Kataoka, A., Frame effects in visual search for line orientation, Perception & Psychophysics, Vol.66, No.2, p.303-327, 2004.02.
6. Shuji Mori, Quantifying Frequency dependence of auditory search, Journal of Physiological Anthropology and Applied Human Science, Vol.23, No.6, p.303-306, 2004.11.
7. Tanaka, G., Mori, S., Inadomi, H., Hamada, Y., Ohta, Y., & Ozawa, H., Clear distinction between preattentive and attentive processes in schizophrenia by visual search performance, Psychiatry Research, Vol.149, P.25-31, 2007.01.
8. Yasuhiro Seya, Shuji Mori, Motion illusion reveals fixation stability of karate athletes, Visual Cognition, 15, 491-512, 2007.03.
9. Seya, Y., Mori, S., Tradeoff between response speed and pursuit accuracy, Motor Control, vol.11, 109-118, 2007.08.
10. Yoshioka, T., Mori, S., Matsuki, T., & Uekusa, O., From RT to POC: Proposal for computation of probability of automobile accidents from empirical reaction time distribution., Proceedings of the 2nd International Multi-Conference on Engineering and Technological Innovation, II, 7-10, 2009.07.
11. Yoshioka, T., Mori, S., Matsuki, T., & Uekusa, O., Estimating probability of automobile accident from driver's reaction time under different arousal states, Proceedings of the 17th ITS World Congress Busan 2010, II, 1-12, 2010.10.
12. Seya, Y., Mori, S., Spatial attention and reaction times during smooth pursuit eye movement, Attention, Perception, & Psychophysics, 10.3758/s13414-011-0247-y, 74, 493-509, 2012.03.
13. Nobuyuki Hirose, Shouta Hattori, Shuji Mori, Object substitution masking reinstated by color change of a previewd mask, 基礎心理学研究, 31, 93-94, 2012.11.
14. Wataru Teramoto, kousuke Tao, Kaoru Sekiyama, Shuji Mori, Reading performance in middle-aged adults with declned accommodation, Attention, Perception, & Psychophysics, 74, 1722-1731, 2012.12.
15. Shuji Mori, Takuro Shimada, Expert anticipation from deceptive action, Attention, Perception, & Psychophysics, 10.3758/s13414-013-0435-z, 75, 751-770, 2013.06.
16. Takamasa Hattori, Yoji Yamada, Shogo Okamoto, Shuji Mori, Shunsuke Yamada, Characteristics and individual differences of human actions for avoiding harm to eyes from a robot, Journal of Robotics and Mechatronics, 26, 358-368, 2014.05, In this study, psychological experiments were conducted to investigate harm-avoidance actions in humans in close contact with robotic devices. For the experiments, a situation was created in which the sharp end-effector tip of a robot suddenly approached the eyes of a facing participant. We define three parameters for analyzing harm-avoidance actions: the avoidance reaction time, maximum avoidance acceleration, and maximum avoidance speed. The results suggest that the avoidance reaction time depends on the initial distance between the human’s eyes and the approaching object but not on the type of work being performed. We derive a novel nonparametric multiple comparison method for statistically testing multivariate data on human actions. The test results show that the bivariate data of the avoidance reaction time and maximum avoidance speed differ for most pairs of participants. These findings can contribute to determining human–robot conditions for safe coexistence. .
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18. Takako Mitsudo, Naruhito Hironaga, Shuji Mori, Cortical activity associated with the detection of temporal gaps in tones: a magnetoencephalography study, Frontiers in Human Neuroscience, doi: 10.3389/fnhum.2014.00763, 8, 1-11, 2014.09, [URL], In this study, spatio-temporal profiles of brain responses to gaps in tones were investigated by two experiments using magnetoencephalography (MEG). Stimuli were consisted of leading and trailing markers with gaps between the two markers of 0, 30, or 80 ms. The leading and trailing markers were 300 ms pure tones at 800 or 3200 Hz. Two conditions were examined: the within-frequency (WF) condition in which the leading and trailing markers had identical frequencies, and the between-frequency (BF) condition in which they had different frequencies. Using minimum-norm estimates (MNE), we localized the source activations at the time of the peak response to the trailing markers. The results revealed that MEG signals in response to 800 and 3200 Hz tones were localized in different regions within the auditory cortex, which indicates spatial representation of frequency pathways of two markers in terms of tonotopic organization. The time course of regional activity (RA) was extracted from each localized region for each condition. In Experiment 1, N1m amplitude of the trailing marker in WF differed between gap durations but not frequency, while in BF conditions, N1m amplitude differed for trailing marker frequency. In Experiment 2, both WF and BF amplitudes showed an effect of frequency, but not gap duration. RAs showed the difference of the temporal characteristics between WF and BF conditions. .
19. Yasuhiro Seya, Shuji Mori, Tradeoff between manual response speed and pursuit accuracy revealed by a deadline procedure.
, Experimental Brain Research, 0.1007/s00221-015-4256-2, 233, 1845-1854, 2015.06.
20. Lawrence M. Ward, Michael Baumann, Graeme Moffat, Larry E. Roberts, Shuji Mori, Matthew Rutledge-Taylor, Robert L. West, Achieving across-laboratory replicability in psychophysical scaling, Frontiers in Psychology, doi:10.3389/fpsyg.2015.00903, 6, 1-15, 2015.07, [URL], It is well known that, although psychophysical scaling produces good qualitative agreement between experiments, precise quantitative agreement between experimental results, such as that routinely achieved in physics or biology, is rarely or never attained. A particularly galling example of this is the fact that power function exponents for the same psychological continuum, measured in different laboratories but ostensibly using the same scaling method, magnitude estimation, can vary by a factor of three. Constrained scaling (CS), in which observers first learn a standardized meaning for a set of numerical responses relative to a standard sensory continuum and then make magnitude judgments of other sensations using the learned response scale, has produced excellent quantitative agreement between individual observers’ psychophysical functions. Theoretically it could do the same for across-laboratory comparisons, although this needs to be tested directly. We compared nine different experiments from four different laboratories as an example of the level of across experiment and across-laboratory agreement achievable using CS. In general, we found across experiment and across-laboratory agreement using CS to be significantly superior to that typically obtained with conventional magnitude estimation techniques, although some of its potential remains to be realized..
21. Shuji Mori, Kazuki Oyama, Yousuke Kikuchi, Takako Mitsudo, Nobuyuki Hirose, Between-frequency and between-ear gap detection and their relation to perception of stop consonants, Ear & Hearing, 10.1097/AUD.0000000000000136, 2015.07.
22. Wataru Teramoto, Takuyuki Nakazaki, Kaoru Sekiyama, Shuji Mori, Effects of word width and word length on optimal character size for reading of horizontally scrolling Japanese words, Frontiers in Psychology, doi: 10.3389/fpsyg.2016.00127, 7, 1-8, 2016.02, [URL], The present study investigated, whether word width and length affect the optimal character size for reading of horizontally scrolling Japanese words, using reading speed as a measure. In Experiment 1, three Japanese words, each consisting of four Hiragana characters, sequentially scrolled on a display screen from right to left. Participants, all Japanese native speakers, were instructed to read the words aloud as accurately as possible, irrespective of their order within the sequence. To quantitatively measure their reading performance, we used rapid serial visual presentation paradigm, where the scrolling rate was increased until the participants began to make mistakes. Thus, the highest scrolling rate at which the participants’ performance exceeded 88.9% correct rate was calculated for each character size (0.3, 0.6, 1.0, and 3.0) and scroll window size (5 or 10 character spaces). Results showed that the reading performance was highest in the range of 0.6 to 1.0, irrespective of the scroll window size. Experiment 2 investigated whether the optimal character size observed in Experiment 1 was applicable for any word width and word length (i.e., the number of characters in a word). Results showed that reading speeds were slower for longer than shorter words and the word width of 3.6 was optimal among the word lengths tested (three, four, and six character words). Considering that character size varied depending on word width and word length in the present study, this means that the optimal character size can be changed by word width and word length in scrolling Japanese words..
23. Shuji Mori, Keiji Iramina, Auditory brainstem responses to silent gaps in across-channel conditions, Acoustical Science & Technology, doi:10.1250/ast.37.79, 37, 2, 79-82, 2016.03.
24. Tomokazu Urakawa, Nobuyuki Hirose, Shuji Mori, Reduction in the reverse-bias effect by an abrupt break in the sequential regularity of visual events, Perception, 10.1177/0301006615622321, 45, 474-482, 2016.04, A bistable image is more likely to be initially perceived as the reversal of its preceding unambiguous version presented for a prolonged period. This perceptual bias is called the reverse-bias effect. We hypothesized that an abrupt break in the sequential regularity of visual events, synchronized with the onset of a bistable image, counteracts the reverse-bias effect in a similar manner to the disturbing effect of noise in the perceptual process. Under the condition in which the reverse-bias effect was achieved with the Necker lattice, the orientation of the bars around the lattice was simultaneously changed at the onset of the lattice, yielding an abrupt break in the sequential regularity of visual events besides the lattice. The results obtained showed that the reverse-bias effect was significantly reduced by the abrupt break, suggesting that an abrupt break in the sequential regularity of visual events perturbs the perceptual bias of the bistable image, similar to that caused by noise..
25. Shunsuke Tamura, Miduki Mori, Kazuhito Ito, Nobuyuki Hirose, Shuji Mori, Study on interactions between voicing production and perception using auditory feedback paradigm, Proceedings of Meetings on Acoustics, https://doi.org/10.1121/2.0000650, 31, 1-7, 2017.10.
26. Akinori Nagata, Kenji Doma, Daichi Yamashita, Hiroshi Hasegawa, Shuji Mori, The effect of augmented feedback type and frequency on velocity-based training-induced adaptation and retention, Journal of Strength & Conditioning Research, 10.1519/JSC.0000000000002514, 2018.02.
27. Shunsuke Tamura, Kazuhito Ito, Nobuyuki Hirose, Shuji Mori, Psychophysical boundary for categorization of voiced-voiceless stop consonants in native Japanese speakers, Journal of Speech, Language, and Hearing Research, https://doi.org/10.1044/2017_JSLHR-H-17-0131, 61, 789-796, 2018.03.
28. Shuji Mori, Yousuke Kikuchi, Nobuyuki Hirose, Hugo Lepage, Willy Wong, Auditory gap detection: psychometric functions and insights into the underlying neural activity, Biological Cybernetics, https://doi.org/10.1007/s00422-018-0786-6, 112, 6, 575-584, 2018.10, The detection of a silent interval or gap provides important insight into temporal processing by the auditory system. Previous research has uncovered a multitude of empirical findings leaving the mechanism of gap detection poorly understood and key issues unresolved. Here, we expand the findings by measuring psychometric functions for a number of conditions including both across-frequency and across-intensity gap detection as a first study of its kind. A model is presented which not only accounts for our findings in a quantitative manner, but also helps frame the body of work on auditory gap research. The model is based on the peripheral response and postulates that the identification of gap requires the detection of activity associated with silence..
29. Shunsuke Tamura, Kazuhito Ito, Nobuyuki Hirose, Shuji Mori, Effects of manipulating the amplitude of consonant noise portion on subcortical representation of voice-onset time and voicing perception in stop consonants, Journal of Speech, Language, and Hearing Research, https://doi.org/10.23641/asha.7728695, 62, 434-441, 2019.02.
30. Shunsuke Tamura, Kazuhito Ito, Nobuyuki Hirose, Shuji Mori, Precision of voicing perceptual identification is altered in association with voice‑onset time production changes, Experimental Brain Research, https://doi.org/10.1007/s00221-019-05584-1, 237, 2197-2204, 2019.06.
31. Wataru Teramoto, Shinji Kawano, Shuji Mori, Kaoru Sekiyama, Word scanning in native and non-native languages: insights into reading with declined accommodation, Experimental Brain Research, https://doi.org/10.1007/s00221-019-05588-x, 237, 2411-2421, 2019.07.
32. Nobuyuki Hirose, Shota Hattori, Shuji Mori, Breaking surface feature continuity of previewed mask reinstates object substitution masking, Japanese Psychological Research, doi: 10.1111/jpr.12275, 2021.01.