Ryuta Kuwamizu, PhD
@rkuwamizu.bsky.social
Sport neuroscientist 🇯🇵/ Assistant Professor at Univ. Tsukuba, Japan
- Exercise pupillometry
- Executive function, prefrontal cortex, fNIRS
- Young child development
- Sports qualia
https://researchmap.jp/kuwamizu_ryuta?lang=en
- Exercise pupillometry
- Executive function, prefrontal cortex, fNIRS
- Young child development
- Sports qualia
https://researchmap.jp/kuwamizu_ryuta?lang=en
Reposted by Ryuta Kuwamizu, PhD
Fish, Sushi, Japan
September 18, 2025 at 2:13 PM
Fish, Sushi, Japan
Fish, Sushi, Japan
September 18, 2025 at 2:13 PM
Fish, Sushi, Japan
Reposted by Ryuta Kuwamizu, PhD
Blink rates are a proxy for cognitive load.
Humans blink ~20 times a minute when relaxed. Using a screen (smartphone, etc) the blink rate decreases to just ~7 per minute.
The eye then “catches up” during breaks in information processing, after decisions are made.
Humans blink ~20 times a minute when relaxed. Using a screen (smartphone, etc) the blink rate decreases to just ~7 per minute.
The eye then “catches up” during breaks in information processing, after decisions are made.
March 6, 2025 at 11:25 PM
Blink rates are a proxy for cognitive load.
Humans blink ~20 times a minute when relaxed. Using a screen (smartphone, etc) the blink rate decreases to just ~7 per minute.
The eye then “catches up” during breaks in information processing, after decisions are made.
Humans blink ~20 times a minute when relaxed. Using a screen (smartphone, etc) the blink rate decreases to just ~7 per minute.
The eye then “catches up” during breaks in information processing, after decisions are made.
Reposted by Ryuta Kuwamizu, PhD
👓🔬 Next-gen AI-powered smart glasses for fatigue detection in ME/CFS!
Tracks blink rate + PERCLOS with ML precision. Clinically validated (F1: 0.75), lightweight (56g), non-contact.
Outperforms EOG, VOG & camera-based wearables.
Full results in comments ⬇️
#WearableTech #FatigueDetection
Tracks blink rate + PERCLOS with ML precision. Clinically validated (F1: 0.75), lightweight (56g), non-contact.
Outperforms EOG, VOG & camera-based wearables.
Full results in comments ⬇️
#WearableTech #FatigueDetection
May 26, 2025 at 10:54 AM
👓🔬 Next-gen AI-powered smart glasses for fatigue detection in ME/CFS!
Tracks blink rate + PERCLOS with ML precision. Clinically validated (F1: 0.75), lightweight (56g), non-contact.
Outperforms EOG, VOG & camera-based wearables.
Full results in comments ⬇️
#WearableTech #FatigueDetection
Tracks blink rate + PERCLOS with ML precision. Clinically validated (F1: 0.75), lightweight (56g), non-contact.
Outperforms EOG, VOG & camera-based wearables.
Full results in comments ⬇️
#WearableTech #FatigueDetection
Reposted by Ryuta Kuwamizu, PhD
There's the Spontaneous Eye-blink Rate that's supposed to be a proxy for frontal dopamine release.
Frontiers | Spontaneous Eye Blink Rate During the Working Memory Delay Period Predicts Task Accuracy
Spontaneous eye blink rate (sEBR) has been linked to attention and memory, specifically working memory (WM). sEBR is also related to striatal dopamine (DA) a...
www.frontiersin.org
June 16, 2024 at 8:15 PM
There's the Spontaneous Eye-blink Rate that's supposed to be a proxy for frontal dopamine release.
Reposted by Ryuta Kuwamizu, PhD
New paper in Imaging Neuroscience by Ralph Andrews, Paul M. Dockree, et al:
Arousal and sustained attention fluctuate differently with respiration in younger and older adults
doi.org/10.1162/IMAG...
Arousal and sustained attention fluctuate differently with respiration in younger and older adults
doi.org/10.1162/IMAG...
June 10, 2025 at 9:00 AM
New paper in Imaging Neuroscience by Ralph Andrews, Paul M. Dockree, et al:
Arousal and sustained attention fluctuate differently with respiration in younger and older adults
doi.org/10.1162/IMAG...
Arousal and sustained attention fluctuate differently with respiration in younger and older adults
doi.org/10.1162/IMAG...
Reposted by Ryuta Kuwamizu, PhD
📢 Our new paper is out!
This study examined how people process haiku poetry by presenting each line sequentially (5-7-5 syllables), tracking cognitive and emotional changes throughout. We measured emotional responses using a joystick and analyzed changes in pupil size.
This study examined how people process haiku poetry by presenting each line sequentially (5-7-5 syllables), tracking cognitive and emotional changes throughout. We measured emotional responses using a joystick and analyzed changes in pupil size.
April 13, 2025 at 12:53 PM
📢 Our new paper is out!
This study examined how people process haiku poetry by presenting each line sequentially (5-7-5 syllables), tracking cognitive and emotional changes throughout. We measured emotional responses using a joystick and analyzed changes in pupil size.
This study examined how people process haiku poetry by presenting each line sequentially (5-7-5 syllables), tracking cognitive and emotional changes throughout. We measured emotional responses using a joystick and analyzed changes in pupil size.
Reposted by Ryuta Kuwamizu, PhD
Attending SRCD!
May 2, 2025 at 8:46 AM
Attending SRCD!
Reposted by Ryuta Kuwamizu, PhD
A new paper is out! 🚨
This study explored preschoolers’ hostile cognition and aggressive responses toward social excluders in Japan — the same work that we presented at #SRCD2025 just a few days ago.
Huge thanks to my supervisor, Yusuke Moriguchi!
journals.sagepub.com/doi/10.1177/...
This study explored preschoolers’ hostile cognition and aggressive responses toward social excluders in Japan — the same work that we presented at #SRCD2025 just a few days ago.
Huge thanks to my supervisor, Yusuke Moriguchi!
journals.sagepub.com/doi/10.1177/...
Hostile Cognitions and Aggressive Responses Toward Excluders in Young Children - Nozomi Yamamoto, Yusuke Moriguchi, 2025
Social exclusion heightens hostile cognition and aggressive responses toward excluders. However, its direct causal effects and relationship with self-construal ...
journals.sagepub.com
May 8, 2025 at 1:24 PM
A new paper is out! 🚨
This study explored preschoolers’ hostile cognition and aggressive responses toward social excluders in Japan — the same work that we presented at #SRCD2025 just a few days ago.
Huge thanks to my supervisor, Yusuke Moriguchi!
journals.sagepub.com/doi/10.1177/...
This study explored preschoolers’ hostile cognition and aggressive responses toward social excluders in Japan — the same work that we presented at #SRCD2025 just a few days ago.
Huge thanks to my supervisor, Yusuke Moriguchi!
journals.sagepub.com/doi/10.1177/...
Our discussion paper is now published in NeuroImage!
Limited potential for fNIRS photobiomodulation in exercise-induced pupil dynamics and improved executive function
www.sciencedirect.com/science/arti...
Limited potential for fNIRS photobiomodulation in exercise-induced pupil dynamics and improved executive function
www.sciencedirect.com/science/arti...
Limited potential for fNIRS photobiomodulation in exercise-induced pupil dynamics and improved executive function
www.sciencedirect.com
May 10, 2025 at 4:19 PM
Our discussion paper is now published in NeuroImage!
Limited potential for fNIRS photobiomodulation in exercise-induced pupil dynamics and improved executive function
www.sciencedirect.com/science/arti...
Limited potential for fNIRS photobiomodulation in exercise-induced pupil dynamics and improved executive function
www.sciencedirect.com/science/arti...
www.researchgate.net/profile/Ryut... via @researchgate
Ryuta Kuwamizu | Achievement
See this researcher's achievement on ResearchGate.
www.researchgate.net
April 21, 2025 at 3:59 PM
www.researchgate.net/profile/Ryut... via @researchgate
Our very short report is now published!
Resting-state blink rate does not increase following very-light-intensity exercise, but individual variation predicts executive function enhancement levels
jphysiolanthropol.biomedcentral.com/articles/10....
Resting-state blink rate does not increase following very-light-intensity exercise, but individual variation predicts executive function enhancement levels
jphysiolanthropol.biomedcentral.com/articles/10....
Resting-state blink rate does not increase following very-light-intensity exercise, but individual variation predicts executive function enhancement levels - Journal of Physiological Anthropology
Background Acute physical exercise, even at a very-light-intensity, potentiates prefrontal cortex activation and improves executive function. The underlying circuit mechanisms in the brain remain poor...
jphysiolanthropol.biomedcentral.com
April 14, 2025 at 9:11 AM
Our very short report is now published!
Resting-state blink rate does not increase following very-light-intensity exercise, but individual variation predicts executive function enhancement levels
jphysiolanthropol.biomedcentral.com/articles/10....
Resting-state blink rate does not increase following very-light-intensity exercise, but individual variation predicts executive function enhancement levels
jphysiolanthropol.biomedcentral.com/articles/10....
Reposted by Ryuta Kuwamizu, PhD
共著論文がNeuroImageにでました！「低用量低酸素吸入後の前頭前野機能強化：心臓迷走神経活動による媒介」
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity
Today, diverse psychophysiological stresses, such as severe time constraints and busy lifestyles, contribute to cardiac parasympathetic dysfunction, p…
www.sciencedirect.com
March 18, 2025 at 5:07 PM
共著論文がNeuroImageにでました！「低用量低酸素吸入後の前頭前野機能強化：心臓迷走神経活動による媒介」
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Reposted by Ryuta Kuwamizu, PhD
Recent co-authored papers!
Enhanced Cardiac Vagal Activity and Mood After Low-Dose Hypoxic Gas Inhalation in Healthy Young Adults
www.sciencedirect.com/science/arti...
Enhanced Cardiac Vagal Activity and Mood After Low-Dose Hypoxic Gas Inhalation in Healthy Young Adults
www.sciencedirect.com/science/arti...
Enhanced Cardiac Vagal Activity and Mood After Low-Dose Hypoxic Gas Inhalation in Healthy Young Adults
Developing strategies to enhance cardiac vagal activity (CVA) is essential for improving mood and managing stress. Although hypoxia inhalation may boo…
www.sciencedirect.com
December 22, 2024 at 6:49 AM
Recent co-authored papers!
Enhanced Cardiac Vagal Activity and Mood After Low-Dose Hypoxic Gas Inhalation in Healthy Young Adults
www.sciencedirect.com/science/arti...
Enhanced Cardiac Vagal Activity and Mood After Low-Dose Hypoxic Gas Inhalation in Healthy Young Adults
www.sciencedirect.com/science/arti...
共著論文がNeuroImageにでました！「低用量低酸素吸入後の前頭前野機能強化：心臓迷走神経活動による媒介」
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity
Today, diverse psychophysiological stresses, such as severe time constraints and busy lifestyles, contribute to cardiac parasympathetic dysfunction, p…
www.sciencedirect.com
March 18, 2025 at 5:07 PM
共著論文がNeuroImageにでました！「低用量低酸素吸入後の前頭前野機能強化：心臓迷走神経活動による媒介」
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Dongmin Lee, Yudai Yamazaki, Ryuta Kuwamizu, Masahiro Okamoto, Hideaki Soya:
Prefrontal executive function enhanced by prior acute inhalation of low-dose hypoxic gas: Modulation via cardiac vagal activity www.sciencedirect.com/science/arti...
Reposted by Ryuta Kuwamizu, PhD
Check out a new lab paper from Mayumi Watanabe's thesis work showing how different subregions of medial prefrontal cortex differentially regulate extinction of aversive memories through projections to the locus-coeruleus-noradrenaline system:
doi.org/10.1038/s413...
doi.org/10.1038/s413...
Bidirectional emotional regulation through prefrontal innervation of the locus coeruleus - Molecular Psychiatry
Molecular Psychiatry - Bidirectional emotional regulation through prefrontal innervation of the locus coeruleus
doi.org
March 8, 2025 at 12:14 AM
Check out a new lab paper from Mayumi Watanabe's thesis work showing how different subregions of medial prefrontal cortex differentially regulate extinction of aversive memories through projections to the locus-coeruleus-noradrenaline system:
doi.org/10.1038/s413...
doi.org/10.1038/s413...
Reposted by Ryuta Kuwamizu, PhD
A new paper is out!
This study examines hostile cognitions and emotions after playing Cyberball in Japanese adults and children. Huge thanks to my supervisor Yusuke Moriguchi & my collaborator @rkuwamizu.bsky.social !
www.sciencedirect.com/science/arti...
This study examines hostile cognitions and emotions after playing Cyberball in Japanese adults and children. Huge thanks to my supervisor Yusuke Moriguchi & my collaborator @rkuwamizu.bsky.social !
www.sciencedirect.com/science/arti...
Hostile cognitions and emotions following social exclusion in Japanese adults and young children
Social exclusion heightens negative emotions and hostile cognition toward others; however, its effects on non-Western adults and children remain uncle…
www.sciencedirect.com
February 19, 2025 at 1:49 AM
A new paper is out!
This study examines hostile cognitions and emotions after playing Cyberball in Japanese adults and children. Huge thanks to my supervisor Yusuke Moriguchi & my collaborator @rkuwamizu.bsky.social !
www.sciencedirect.com/science/arti...
This study examines hostile cognitions and emotions after playing Cyberball in Japanese adults and children. Huge thanks to my supervisor Yusuke Moriguchi & my collaborator @rkuwamizu.bsky.social !
www.sciencedirect.com/science/arti...
共著論文がでました！
森口研の山本さん@nozom1no.bsky.social による社会的排除後の敵対的認知と感情についての幼児研究です！
Nozomi Yamamoto, Ryuta Kuwamizu, Yusuke Moriguchi: Hostile cognitions and emotions following social exclusion in Japanese adults and young children
www.sciencedirect.com/science/arti...
森口研の山本さん@nozom1no.bsky.social による社会的排除後の敵対的認知と感情についての幼児研究です！
Nozomi Yamamoto, Ryuta Kuwamizu, Yusuke Moriguchi: Hostile cognitions and emotions following social exclusion in Japanese adults and young children
www.sciencedirect.com/science/arti...
Hostile cognitions and emotions following social exclusion in Japanese adults and young children
Social exclusion heightens negative emotions and hostile cognition toward others; however, its effects on non-Western adults and children remain uncle…
www.sciencedirect.com
February 18, 2025 at 1:05 AM
共著論文がでました！
森口研の山本さん@nozom1no.bsky.social による社会的排除後の敵対的認知と感情についての幼児研究です！
Nozomi Yamamoto, Ryuta Kuwamizu, Yusuke Moriguchi: Hostile cognitions and emotions following social exclusion in Japanese adults and young children
www.sciencedirect.com/science/arti...
森口研の山本さん@nozom1no.bsky.social による社会的排除後の敵対的認知と感情についての幼児研究です！
Nozomi Yamamoto, Ryuta Kuwamizu, Yusuke Moriguchi: Hostile cognitions and emotions following social exclusion in Japanese adults and young children
www.sciencedirect.com/science/arti...
Reposted by Ryuta Kuwamizu, PhD
Reposted by Ryuta Kuwamizu, PhD
Congrats to all authors!
January 14, 2025 at 5:07 PM
Congrats to all authors!
Reposted by Ryuta Kuwamizu, PhD
Literature highlight of the week: Kuwamizu et al. observe that very-light-intensity exercise elicits pupil dilation which enhances prefrontal cortex activation and executive function.
https://www.sciencedirect.com/science/article/pii/S1053811923003956?dgcid=rss_sd_all
https://www.sciencedirect.com/science/article/pii/S1053811923003956?dgcid=rss_sd_all
ScienceDirect
www.sciencedirect.com
January 14, 2025 at 5:01 PM
Literature highlight of the week: Kuwamizu et al. observe that very-light-intensity exercise elicits pupil dilation which enhances prefrontal cortex activation and executive function.
https://www.sciencedirect.com/science/article/pii/S1053811923003956?dgcid=rss_sd_all
https://www.sciencedirect.com/science/article/pii/S1053811923003956?dgcid=rss_sd_all
Reposted by Ryuta Kuwamizu, PhD
アーカイブ！
#516【心理学対談#15 桑水隆多さん】瞳孔は人のこころの何を語るか？ - 心理学者じんぺー @jimpe-hitsuwari.bsky.social
voicy.jp/channel/4088... #Voicy
#516【心理学対談#15 桑水隆多さん】瞳孔は人のこころの何を語るか？ | 心理学者じんぺー「毎日心理学論文を紹介するラジオ」/ Voicy - 音声プラットフォーム
【研究サポーター募集中です！】https://academist-cf.com/fanclubs/358【今後の対談予定】12月29日(日)17:00【ぼくたちのBUMPOFCHICKEN#1つっちーさん】
voicy.jp
December 25, 2024 at 7:36 PM
アーカイブ！
#516【心理学対談#15 桑水隆多さん】瞳孔は人のこころの何を語るか？ - 心理学者じんぺー @jimpe-hitsuwari.bsky.social
voicy.jp/channel/4088... #Voicy