Member introduction
Hiroki Watanabe (Researcher)
Degree
Ph.D. (Engineering)
Research theme
We are not always aware of our mood and cognitive states and may not notice changes in these states. Measuring brain activity in daily life is one effective means of monitoring changes in our cognitive states of which we are unaware.
My research theme is to develop applications that use electroencephalographic measurements in real-world environments to estimate human cognitive states that are difficult to recognize explicitly, such as mental workload, mood, and motivation, and apply them to neurofeedback, rehabilitation, and learning systems.

Education
2012 B.A. Department of Humanities, College of Letters, Ritsumeikan University
2014 M.A. Graduate School of Intercultural Studies, Kobe University
2019 Ph.D. Graduate School of Information Sciences, Nara Advanced Institute of Science and Technology
Publications
Research papers
- Tsutsui, K., Ukita, S., Kondo, M., Toshima, G., Miyazaki, N., Nagashima, K., Ohmura, M., Tsuchihashi, S., Tsuji, Y., Katoh, M., Aida, N., Kobayashi, Y., Ohtsu, Y., Fujita, Y., Tanaka, S., Watanabe, H., Naruse, Y., Iizuka, S., Kato, H., Mashimo, Y., Senbonmatsu, T. Synergistic Effect of Motivation for the Elderly and Support for Going Out II: Measures to Induce Elderly Men to Go Out. Geriatrics, 9(1):21(2024).
- Saga, T., Watanabe, H., Naruse, Y., Recurrent Neural Network to Predict Saccade Offset Time Points from Electrooculogram Signals for Automatic Measurement of Eye-Fixation-Related Potential. Appl. Sci. 13, 6230 (2023).
- Fuseda, K., Watanabe, H., Matsumoto, A., Saito, J., Naruse, Y. & Ihara, A.S. Impact of depressed state on attention and language processing during news broadcasts: EEG analysis and machine learning approach. Sci Rep 12, 20492 (2022).
- Watanabe, H. and Naruse, Y. P300 as a neural indicator for setting levels of goal scores in educational gamification applications from the perspective of intrinsic motivation: An ERP study. Front. Neuroergon, 3:9408080 (2022).
- Mashimo, Y., Tsuchihashi, S., Tsutsui, K., Arai, T., Tsuji, Y., Numai, T., Kameda, K., Nishizawa, K., Kovacs, M., Tanaka, S., Watanabe, H., Naruse, Y., Ohmura, M., Ishida, N., Iwasaki, T., Hiruma, G., Miyazaki, N., Takemura, R., Nagashima, K., Sato, Y., Ohtsu, Y., Nakano, T., Aida, N., Iizuka, I., Kato, H., Kobayashi, Y., Senbonmatsu, T. Synergistic Effect of Motivation for the Elderly and Support for Going out. Journal of Personalized Medicine. 12(8):1257 (2022)
- Watanabe H, Higashi Y, Saga T, Hashizaki M, Yokota Y, Kataoka H, Nakajima H and Naruse Y. (2021). Eye-Fixation-Related Potentials (EFRPs) As a Predictor of Human Error Occurrences During a Visual Inspection Task, International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 5820-5823, Virtual Conference, November, 2021.
- Watanabe H, Nakajima K, Takagi S, Mizuyama R, Saito M, Furusawa K, Nakatani K, Yokota Y, Kataoka H, Nakajima H and Naruse Y,Differences in Mechanical Parameters of Keyboard Switches Modulate Motor Preparation: A Wearable EEG Study. Front. Neuroergon. 2:644449 (2021).
- Ihara, A.S., Matsumoto, A., Ojima, S., Katayama, J., Nakamura, K., Yokota, Y., Watanabe, H. and Naruse, Y. Prediction of second language proficiency based on electroencephalographic signals measured while listening to natural speech. Frontiers in Human Neuroscience 15:665809 (2021).
- Watanabe, H., Tanaka, H., Sakriani S., & Nakamura, S. (2019, in press). Synchronization between overt speech envelope and EEG oscillations during imagined speech. Neuroscience Research.
- Tanaka. H., Watanabe. H., Maki. H., Sakriani. S., & Nakamura. S. (2019) EEG-based single trial detection of language expectation violations in listening to speech. Frontiers in Computational Neuroscience, 13, 15.
- Watanabe. H., Tanaka. H., Sakriani. S., & Nakamura. S. (2019). Neural oscillation-based classification of Japanese spoken sentences during speech perception, IEICE Transactions on Information and Systems, Vol.E102-D (2), 383-391.
- Tanaka, H., Watanabe, H., Maki, H., Sakti, S., & Nakamura, S. (2018). Single-trial detection of semantic anomalies from EEG during listening to spoken sentences, International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 977-980, Honolulu, U.S.A., July, 2018.
- Watanabe, H., Tanaka, H., Sakti, S., & Nakamura, S. (2017). Subject-independent classification of Japanese spoken sentences by multiple frequency bands phase pattern of EEG response during speech perception, Interspeech 2017, pp. 2431-2435, Stockholm, Sweden, August, 2017.
- Pintér, G., & Watanabe, H. (2016). Do GMM phoneme classifiers perceive synthetic sibilants as humans do?, Interspeech 2016, pp. 1363-1367, San Francisco, U.S.A., September, 2016.
- Watanabe. H., & Yokokawa. H. (2015). Use of lexical stress information in silent reading and speech production by Japanese learners of English: evidence from eye movement measurements and naming tasks. JACET JOURNAL (59), 111-129.