Article
Multidisciplinary Sciences
Gianluca Finotti, Sara Garofalo, Marcello Costantini, Dennis R. Proffitt
Summary: It is important to understand how the body representation can be modified, and this study used the Rubber Hand Illusion (RHI) to investigate its temporal dynamics. The feeling of Ownership is established within the first 19 seconds of stimulation and continues to grow, but at a slower pace. The feeling of Ownership disappears within 66 seconds after the stimulation ends, highlighting the malleability of body self-consciousness.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Noriaki Kanayama, Masayuki Hara, Kenta Kimura
Summary: Virtual reality allows for fast and controllable experimental body image settings, with EEG oscillatory activities providing insights into human multisensory integration processes. However, EEG data recorded in VR environments may be vulnerable to noise, posing challenges for measurement and analysis. The study highlights differences in brain activities between real and VR settings, emphasizing the need to consider these differences in investigating bodily self-perception using VR.
SCIENTIFIC REPORTS
(2021)
Article
Behavioral Sciences
Marie Chancel, H. Henrik Ehrsson
Summary: This article investigates the multisensory perception of body ownership and explores the mechanisms underlying the emergence of body ownership illusions such as the visuotactile rubber hand illusion using Bayesian causal inference models. The study finds that proprioception and its relative reliability influence this inferential process and verifies this hypothesis through a rubber hand illusion experiment. The results demonstrate that proprioceptive uncertainty shapes multisensory perception. These findings offer important insights into our understanding of the formation of body ownership.
Article
Multidisciplinary Sciences
M. Smit, H. C. Dijkerman, V. Kurstjens, A. M. de Haan, I. J. M. van der Ham, M. J. van der Smagt
Summary: This study investigates the modulation of peripersonal space (PPS) by changes in perceived body ownership. The results show that after induction of a left hand rubber hand illusion, the space around the body shifts to the right for the "synchronous stroking" group. This suggests that the shift in space is mainly driven by multisensory integration of bodily information, rather than feelings of ownership.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Manasi Wali, Trevor Lee-Miller, Reshma Babu, Hannah J. Block
Summary: The brain estimates hand position by combining visual and proprioceptive cues, and spatial mismatches between these cues elicit recalibration. It is unclear how long this recalibration is retained. This study investigates whether direct vision and/or active movement of the hand can undo visuo-proprioceptive recalibration, and whether recalibration is still evident 24 hours later.
SCIENTIFIC REPORTS
(2023)
Article
Psychology, Multidisciplinary
Satoshi Shibuya, Satoshi Unenaka, Yukari Ohki
Summary: The rubber hand illusion is a perceptual illusion that can also occur with delayed visual feedback, causing proprioceptive drift. The study found that hand ownership and localization are caused by distinct multisensory integration processes.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Psychology, Multidisciplinary
Arran T. Reader, Victoria S. Trifonova, H. Henrik Ehrsson
Summary: The study found that in the rubber hand illusion, participants who reported feeling ownership also tended to report touch referral, showing a moderately strong positive relationship between the two. Touch referral was often reported more strongly and frequently than ownership, indicating implications for the experimental paradigm.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Multidisciplinary Sciences
Esra Ozkan, Ceyda Ozler, Kardelen Akar, Hussein Youssef, Kaan Ozmen, Zuemruet Duygu Sen, Atay Vural, Yasemin Gursoy-Ozdemir
Summary: Rubber hand illusion (RHI) is a traditional task that examines multisensory integration, and it is influenced by visual capture of tactile stimulus. Another task that requires multisensorial integration and shows a predominance of visual input is the maintenance of body posture. This study aimed to investigate if individual dependency on visual inputs in balance correlated with proprioceptive drift (PD) in RHI. The results showed a moderate positive correlation between PD and the contribution of visual inputs to static body balance.
SCIENTIFIC REPORTS
(2023)
Article
Behavioral Sciences
Arran T. T. Reader, Sara Coppi, Victoria S. S. Trifonova, H. Henrik Ehrsson
Summary: In this study, the researchers attempted to replicate the reduction in MEP amplitude associated with the rubber hand illusion (RHI) and identify the components of the illusion that might explain these changes. Despite participants reporting the presence of the illusion and shifts in perceived real hand position towards the fake limb, no reduction in MEP amplitude was observed.
BRAIN AND BEHAVIOR
(2023)
Article
Neurosciences
Pamela Svensson, Nebojsa Malesevic, Ulrika Wijk, Anders Bjorkman, Christian Antfolk
Summary: Tactile feedback is crucial for ownership and motor control of prosthetic hands. The rubber hand illusion (RHI) can be induced by modality-matched or mismatched stimulation. This study compared the effectiveness of mechanotactile, vibrotactile, and electrotactile feedback in inducing the RHI in able-bodied participants and forearm amputees.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Neurosciences
Arran T. Reader, Victoria S. Trifonova, H. Henrik Ehrsson
Summary: The study showed that manipulating body ownership through the rubber hand illusion has little impact on basic motor control, as subjective sensations of rubber hand ownership did not convincingly correlate with kinematic variables according to experimental results.
EUROPEAN JOURNAL OF NEUROSCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Mohamed-Amine Choukou, Sophia Mbabaali, Jasem Bani Hani, Carol Cooke
Summary: This scoping review explored technology-assisted interventions for hand therapy and found that using a combination of three or four different technologies showed better results compared to using two technologies. It provided insights for therapists on selecting the most suitable technology for hand therapy.
APPLIED SCIENCES-BASEL
(2021)
Article
Psychology, Multidisciplinary
Letizia Della Longa, Sofia Sacchetti, Teresa Farroni, Francis McGlone
Summary: This study suggests that the subjective intensity of tactile stimulation experienced across different conditions modulates the strength of proprioceptive drift during the Rubber Hand Illusion, indicating that different types of tactile stimulation influence the illusion of body ownership perception.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Neurosciences
Kota Ataka, Tamami Sudo, Ryoji Otaki, Eizaburo Suzuki, Shin-Ichi Izumi
Summary: Long-term non-use of body parts due to physical dysfunction may decrease the sense of body ownership. This study induced a sense of disownership using the rubber hand illusion and found that disownership led to a decrease in tactile sensitivity.
FRONTIERS IN SYSTEMS NEUROSCIENCE
(2022)
Article
Chemistry, Analytical
Kunio Shimada
Summary: In order to develop versatile sensors capable of multiple responses to different sensations, researchers investigated mechanoreceptors fabricated as a single platform with an electric circuit. The proposed hybrid fluid rubber mechanoreceptors mimicking bio-inspired senses proved to be useful for resolving the complicated structure. Through electrochemical impedance spectroscopy, the intrinsic structure and physical mechanisms of firing rates of the mechanoreceptors were elucidated, with findings revealing the adaptions in different sensations.
Article
Neurosciences
Akira Yoshikawa, Yuri Masaoka, Masaki Yoshida, Nobuyoshi Koiwa, Motoyasu Honma, Keiko Watanabe, Satomi Kubota, Iizuka Natsuko, Masahiro Ida, Masahiko Izumizaki
FRONTIERS IN NEUROSCIENCE
(2020)
Article
Neurosciences
Satomi Kubota, Yuri Masaoka, Haruko Sugiyama, Masaki Yoshida, Akira Yoshikawa, Nobuyoshi Koiwa, Motoyasu Honma, Ryuta Kinno, Keiko Watanabe, Natsuko Iizuka, Masahiro Ida, Kenjiro Ono, Masahiko Izumizaki
FRONTIERS IN HUMAN NEUROSCIENCE
(2020)
Article
Neurosciences
Motoyasu Honma, Hidetomo Murakami, Yoshiko Yabe, Takeshi Kuroda, Akinori Futamura, Azusa Sugimoto, Yasuo Terao, Yuri Masaoka, Masahiko Izumizaki, Mitsuru Kawamura, Kenjiro Ono
Summary: The study found that duration feedback training can improve cognitive task performance in patients with PD, particularly in the Go/No-go task, Stroop task, and impulsivity assessment. These results suggest that time perception is functionally linked to inhibitory systems, and that feedback training to maintain time perception could improve cognitive/psychiatric functions in patients with PD.
JOURNAL OF NEUROSCIENCE RESEARCH
(2021)
Article
Medicine, Research & Experimental
Motoyasu Honma, Shoko Saito, Takeshi Atsumi, Shin-ichi Tokushige, Satomi Inomata-Terada, Atsuro Chiba, Yasuo Terao
Summary: This study aimed to manipulate subjective duration production by memory consolidation through the modulation of neural plasticity. Altered duration production returned to baseline within two hours, but with quadripulse transcranial magnetic stimulation (QPS) over the right dorsolateral prefrontal cortex, false duration production was maintained for four hours and persisted for at least one week.
Article
Behavioral Sciences
Natsuko Iizuka, Yuri Masaoka, Satomi Kubota, Haruko Sugiyama, Masaki Yoshida, Akira Yoshikawa, Nobuyoshi Koiwa, Motoyasu Honma, Keiko Watanabe, Shotaro Kamijo, Sawa Kamimura, Masahiro Ida, Kenjiro Ono, Masahiko Izumizaki
Summary: This study found that volume reduction in the medial temporal regions is not directly linked to declining olfactory ability. Reduction in the left entorhinal cortex volume was correlated with reduction in the left parahippocampus and dentate gyrus volumes. However, reduction in the left parahippocampus volume had the greatest impact on olfactory decline, with the entorhinal cortex and dentate gyrus potentially contributing to the decline as well.
BRAIN AND BEHAVIOR
(2021)
Article
Neurosciences
Yasuo Terao, Motoyasu Honma, Yuki Asahara, Shin-ichi Tokushige, Toshiaki Furubayashi, Tai Miyazaki, Satomi Inomata-Terada, Ayumi Uchibori, Shinji Miyagawa, Yaeko Ichikawa, Atsuro Chiba, Yoshikazu Ugawa, Masahiko Suzuki
Summary: The study found that time production/reproduction tasks in PD and PSP patients showed unusual time perception compared to normal subjects, while perceptual tasks showed changes in the opposite direction to motor timing tasks. This suggests that timing performance in PD may be influenced by complex interactions among time scales on the motor and sensory sides, and by their distortion in memory.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Neurosciences
Rika Moriya, Mitsuko Kanamaru, Naoki Okuma, Akira Yoshikawa, Kenji F. Tanaka, Satoshi Hokari, Yasuyoshi Ohshima, Akihiro Yamanaka, Motoyasu Honma, Hiroshi Onimaru, Toshiaki Kikuchi, Masahiko Izumizaki
Summary: Studies have shown that 5-HT neurons in the DRN play a crucial role in regulating different waking states, with optogenetic activation of these neurons causing rapid transition from non-REM sleep to active wakefulness. Activation of medullary 5-HT neurons, on the other hand, does not seem to affect sleep/wake states or locomotor activity. Further research into the cortical functional connectivity involved in sleep/wake state regulation is encouraged based on these findings.
BRAIN RESEARCH BULLETIN
(2021)
Article
Multidisciplinary Sciences
Sayaka Wada, Motoyasu Honma, Yuri Masaoka, Masaki Yoshida, Nobuyoshi Koiwa, Haruko Sugiyama, Natsuko Iizuka, Satomi Kubota, Yumika Kokudai, Akira Yoshikawa, Shotaro Kamijo, Sawa Kamimura, Masahiro Ida, Kenjiro Ono, Hidetoshi Onda, Masahiko Izumizaki
Summary: The study found that brain atrophy associated with emotion recognition was observed in elderly participants, with education years linked to the volume of certain brain regions. Specifically, the volume of the right orbital gyrus, right inferior frontal gyrus, and right supramarginal gyrus were associated with years of education, and the volume of the right supramarginal gyrus was further linked to emotion recognition score.
Article
Neurosciences
Yuri Masaoka, Haruko Sugiyama, Masaki Yoshida, Akira Yoshikawa, Motoyasu Honma, Nobuyoshi Koiwa, Shotaro Kamijo, Keiko Watanabe, Satomi Kubota, Natsuko Iizuka, Masahiro Ida, Kenjiro Ono, Masahiko Izumizaki
Summary: This study found that specific odors can evoke autobiographical memories and identified the brain regions involved, providing insights into the impact of odors on cognitive function in older adults.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Neurosciences
Yumika Kokudai, Motoyasu Honma, Yuri Masaoka, Masaki Yoshida, Haruko Sugiyama, Akira Yoshikawa, Nobuyoshi Koiwa, Satomi Kubota, Natsuko Iizuka, Sayaka Wada, Shotaro Kamijo, Yuki Uchida, Satoshi Yano, Masahiro Ida, Kenjiro Ono, Masahiko Izumizaki
Summary: The study found that aging affects certain brain regions, leading to cognitive dysfunction. Specifically, a cascade process mediated by the left hippocampus and left superior frontal gyrus is involved in the relationship between aging and cognitive dysfunction.
Article
Geriatrics & Gerontology
Satoshi Matsuno, Takuya Yoshiike, Atsushi Yoshimura, Sachiyo Morita, Yusuke Fujii, Motoyasu Honma, Yuji Ozeki, Kenichi Kuriyama
Summary: This study suggests that standing plantar perception training (SPPT) can improve standing postural stability in older adults by enhancing regional cortical activity, particularly in the right parietal association area.
JOURNAL OF AGING AND PHYSICAL ACTIVITY
(2021)
Article
Neurosciences
Takeshi Kuroda, Motoyasu Honma, Yukiko Mori, Akinori Futamura, Azusa Sugimoto, Hideyo Kasai, Satoshi Yano, Sotaro Hieda, Kensaku Kasuga, Takeshi Ikeuchi, Kenjiro Ono
Summary: This study compared the extent and distribution of white matter lesions (WMLs) between idiopathic normal pressure hydrocephalus (iNPH) and Alzheimer's disease (AD), and found that deep WML volume was significantly larger in iNPH than in AD, while periventricular WML volume was dominant in AD. The lateral ventricular volume positively correlated with WML volume in all participants, and there was a significant negative correlation between lateral ventricular volume and Aβ(38) in iNPH.
JOURNAL OF ALZHEIMERS DISEASE
(2022)
Article
Multidisciplinary Sciences
Motoyasu Honma, Yuri Masaoka, Natsuko Iizuka, Sayaka Wada, Sawa Kamimura, Akira Yoshikawa, Rika Moriya, Shotaro Kamijo, Masahiko Izumizaki
Summary: The study investigates the reason for the decline in reading comprehension when reading on a smartphone compared to reading on paper. It is found that reading on a smartphone elicits fewer sighs, promotes brain overactivity in the prefrontal cortex, and results in reduced comprehension. The relationship between sigh inhibition and overactivity in the prefrontal cortex is believed to cause the decline in comprehension.
SCIENTIFIC REPORTS
(2022)
Article
Psychology, Multidisciplinary
Masayoshi Nagai, Motoyasu Honma, Takatsune Kumada, Yoshihisa Osada
Summary: Spontaneous behavior, influenced by social factors, plays a role in building harmonious relationships. This study found that individuals with high levels of autistic-like traits showed poorer coordination in spontaneous stepping when facing each other, potentially indicating a source of their poor social-communication abilities.
JAPANESE PSYCHOLOGICAL RESEARCH
(2022)
Article
Multidisciplinary Sciences
Miku Kosuge, Motoyasu Honma, Yuri Masaoka, Shota Kosuge, Momoka Nakayama, Shotaro Kamijo, Yusuke Shikama, Masahiko Izumizaki
Summary: Change in body perception requires recalibration of sensory inputs. It is less known how other information relates to body perception recalibration. This study investigated the relationship between respiration and hand perception recalibration. Results showed that temporal and spatial congruency between respiratory rhythm and mannequin hand facilitated hand ownership transfer, while incongruency had little effect. The findings suggest that respiratory rhythms are involved in adapting the body's neural representations.
SCIENTIFIC REPORTS
(2023)
