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Seiyama A, Miura T, Okahashi S, Konishi N, Cassim M. Visual effects on tactile stimulation and its perception: A pilot study using near-infrared spectroscopy. MethodsX 2024; 13:102849. [PMID: 39157814 PMCID: PMC11326913 DOI: 10.1016/j.mex.2024.102849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 07/04/2024] [Indexed: 08/20/2024] Open
Abstract
In rubber hand illusion, visual information affects tactile information, whereas in the mirror box illusion, visual information has the opposite effect. However, its underlying mechanisms are not fully understood. As one of the reasons, non-invasive neuroimaging techniques, such as functional magnetic resonance, positron emission tomography, and electroencephalography, often fail to detect complex and fragile responses in the sensory-motor cortex. Using near-infrared spectroscopy (NIRS), we examined neural activity during tactile tracing on a sine-shaped acrylic board to investigate the effects of (1) visual information and (2) the spatial frequency of the sine shape on brain activity. We used spatial frequencies of 2-3 and 20-30 Hz as low- and high-tactile stimuli, respectively. Two types of experiments, with and without an acrylic board, were conducted. Participants performed the tracing tasks with their index finger at 1 Hz of temporal frequency of a 200 mm length of the acrylic board as main tasks and only space moving without touching as a control task. We show effect of visual information on neural activation, including not only activation intensity but also activation patterns.•Testing of mutual effects of vision and haptics.•Testing of sensory-motor paradox using NIRS.•A high NIRS sensitivity to stimulus-induced hemodynamic change.
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Affiliation(s)
- Akitoshi Seiyama
- Creative Design and Data Science Center, Akita International University, Japan
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Japan
| | - Tatsuro Miura
- Creative Design and Data Science Center, Akita International University, Japan
- Division of Clinical Laboratory Science, National Hospital Organization Kyoto Medical Center, Japan
| | - Sayaka Okahashi
- Creative Design and Data Science Center, Akita International University, Japan
- Center for Gerontology and Social Science, Research Institute, National Center for Geriatrics and Gerontology, Japan
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Japan
| | - Nami Konishi
- Creative Design and Data Science Center, Akita International University, Japan
- Department of Nursing, Kyoto Tachibana University, Japan
| | - Monte Cassim
- Creative Design and Data Science Center, Akita International University, Japan
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Japan
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Sutil-Jiménez AJ, Alba G, Muñoz MA. Development and validation of a pictographic assessment embodiment scale. Q J Exp Psychol (Hove) 2024:17470218241252557. [PMID: 38659176 DOI: 10.1177/17470218241252557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Embodiment is a complex concept related to the subjective perception of an object as it belongs to its own body. In general, this construct has been evaluated by means of questionnaires, but validation studies in other cultures and limitations related with barriers of language received little attention. The purpose of the present investigation was twofold: to validate the factorial structure of embodiment questionnaire (EQ) and to construct a pictographic scale (PAE) to measure embodiment without relapse verbal representations. In the first experiment, 136 participants underwent a Rubber Hand Illusion (RHI) procedure following both congruent and incongruent (control) visuo-tactile stimulations. Then, they evaluated embodiment illusion in EQ using a Likert-type scale to rate their agreement or disagreement with 27 statements and with a pictographic scale designed to assess their subjective experience of the illusion. Principal components analysis in EQ scores identified four components that emerged in both conditions: Embodiment, Disembodiment, Affect and Deafference. PAE scale was highly correlated with embodiment factor and can differentiate between conditions. In a second experiment, 30 participants underwent the RHI procedure, and they were assessed using PAE and proprioceptive drift. Results indicate a high positive correlation between PAE and post-illusion drift score. These results provide evidence about the consistency of the factorial structure of EQ across cultures, and we also provide a new pictographic tool that allows quick measurement of embodiment overcoming language barriers.
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Affiliation(s)
| | - Guzmán Alba
- Department of Personality, Assessment and Treatment, University of Granada, Granada, Spain
- Mind, Brain and Behavior Research Center, University of Granada, Granada, Spain
- Department of Biological and Health Psychology, Autonomous University of Madrid, Madrid, Spain
| | - Miguel A Muñoz
- Department of Personality, Assessment and Treatment, University of Granada, Granada, Spain
- Mind, Brain and Behavior Research Center, University of Granada, Granada, Spain
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Suzuki N, Yamamoto T. The influence of interoceptive accuracy on the verbalization of emotions. Sci Rep 2023; 13:22158. [PMID: 38092823 PMCID: PMC10719356 DOI: 10.1038/s41598-023-49313-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023] Open
Abstract
Interoception, which pertains to the physiological state of the body, is associated with subjective emotional experiences. In particular, the accuracy of perceiving interoceptive signals (interoceptive accuracy [IAcc]) is linked to the intensity of emotional arousal, known as arousal focus (AF). IAcc is believed to influence the granularity of emotional experiences. Here, we examined the relationship between IAcc and assessment and verbalisation of one's own or others' emotions. Study I demonstrated that individuals with higher IAcc exhibited significantly greater AF when evaluating their own positive emotions. Furthermore, although no correlation between IAcc and AF was found in free descriptions of emotions, a significant positive correlation was found between IAcc and the number of emotion-related words. Study II showed that individuals with higher IAcc displayed significantly higher AF when assessing the positive emotions of characters in videos. Additionally, in free descriptions of these characters, a significant positive correlation was observed between predicted verbal IQ and the number of emotion-related words. These findings support the notion that interoception is associated with AF during assessment of one's own or others' positive emotions as well as the abundance of emotion-related words. This study demonstrates the relationship between bodily sensations and social aspects of human embodiment.
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Affiliation(s)
- Naho Suzuki
- Graduate School of Human Relations, Keio University, Tokyo, 108-8345, Japan.
| | - Tetsuya Yamamoto
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, 770-8502, Japan
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Lin R, Zeng F, Wang Q, Chen A. Cross-Modal Plasticity during Self-Motion Perception. Brain Sci 2023; 13:1504. [PMID: 38002465 PMCID: PMC10669852 DOI: 10.3390/brainsci13111504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/13/2023] [Accepted: 10/23/2023] [Indexed: 11/26/2023] Open
Abstract
To maintain stable and coherent perception in an ever-changing environment, the brain needs to continuously and dynamically calibrate information from multiple sensory sources, using sensory and non-sensory information in a flexible manner. Here, we review how the vestibular and visual signals are recalibrated during self-motion perception. We illustrate two different types of recalibration: one long-term cross-modal (visual-vestibular) recalibration concerning how multisensory cues recalibrate over time in response to a constant cue discrepancy, and one rapid-term cross-modal (visual-vestibular) recalibration concerning how recent prior stimuli and choices differentially affect subsequent self-motion decisions. In addition, we highlight the neural substrates of long-term visual-vestibular recalibration, with profound differences observed in neuronal recalibration across multisensory cortical areas. We suggest that multisensory recalibration is a complex process in the brain, is modulated by many factors, and requires the coordination of many distinct cortical areas. We hope this review will shed some light on research into the neural circuits of visual-vestibular recalibration and help develop a more generalized theory for cross-modal plasticity.
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Affiliation(s)
- Rushi Lin
- Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal University, 3663 Zhongshan Road N., Shanghai 200062, China; (R.L.); (F.Z.); (Q.W.)
| | - Fu Zeng
- Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal University, 3663 Zhongshan Road N., Shanghai 200062, China; (R.L.); (F.Z.); (Q.W.)
| | - Qingjun Wang
- Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal University, 3663 Zhongshan Road N., Shanghai 200062, China; (R.L.); (F.Z.); (Q.W.)
| | - Aihua Chen
- Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal University, 3663 Zhongshan Road N., Shanghai 200062, China; (R.L.); (F.Z.); (Q.W.)
- NYU-ECNU Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200122, China
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Özkan E, Özler C, Akar K, Youssef H, Özmen K, Şen ZD, Vural A, Gürsoy-Özdemir Y. Individual-based predominance of visual input in multisensorial integration for balance is correlated with proprioceptive drift in rubber hand illusion. Sci Rep 2023; 13:11905. [PMID: 37488214 PMCID: PMC10366093 DOI: 10.1038/s41598-023-39253-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/22/2023] [Indexed: 07/26/2023] Open
Abstract
Rubber hand illusion (RHI) is a traditional task that examines multisensory integration. The visual capture of tactile stimulus given to the seen rubber hand was considered to predominate the sensory processing and interfere with the bottom-up proprioceptive and tactile inputs received from the unseen real hand that results in mislocalization of participants hand towards rubber hand, namely proprioceptive drift (PD). Another task that requires multisensorial integration and shows a predominance of visual input is the maintenance of body posture. However, if the predominance of visual input in one task is generalizable to another task is yet to be elucidated. We aimed to examine if individual dependency on visual inputs in multisensorial integration in balance correlated with PD in RHI. Twenty healthy participants were recruited for the study and completed the RHI task. The contribution of visual inputs to the static body balance was measured with the instrumented clinical test of sensory interaction for balance and indexed with Romberg Quotient (RQ). We found a moderate positive correlation between PD and RQ. Individuals with more dependence on visual information in maintaining body posture had higher PD in RHI. Our results indicate that there can be an individual-based dependence on particular domains of sensory input preserved during different tasks of multisensorial integration. Future studies must clarify whether this tendency relates to certain physical or physiological traits.
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Affiliation(s)
- Esra Özkan
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey.
- Department of Neurology, School of Medicine, Koç University, Istanbul, Turkey.
| | - Ceyda Özler
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey
| | - Kardelen Akar
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey
| | - Hussein Youssef
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey
| | - Kaan Özmen
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey
| | - Zümrüt Duygu Şen
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
- Center for Intervention and Research on Adaptive and Maladaptive Brain Circuits Underlying Mental Health, DZP, Jena, Germany
- Clinical Affective Neuroimaging Laboratory (CANLAB), Magdeburg, Germany
- Department of Psychiatry and Psychotherapy, University Tübingen, Tübingen, Germany
| | - Atay Vural
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey
- Department of Neurology, School of Medicine, Koç University, Istanbul, Turkey
| | - Yasemin Gürsoy-Özdemir
- Koç University Research Center for Translational Medicine, Koç University Hospital, Zeytinburnu, 34010, Istanbul, Turkey
- Department of Neurology, School of Medicine, Koç University, Istanbul, Turkey
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Zeng F, Zaidel A, Chen A. Contrary neuronal recalibration in different multisensory cortical areas. eLife 2023; 12:82895. [PMID: 36877555 PMCID: PMC9988259 DOI: 10.7554/elife.82895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 02/21/2023] [Indexed: 03/07/2023] Open
Abstract
The adult brain demonstrates remarkable multisensory plasticity by dynamically recalibrating itself based on information from multiple sensory sources. After a systematic visual-vestibular heading offset is experienced, the unisensory perceptual estimates for subsequently presented stimuli are shifted toward each other (in opposite directions) to reduce the conflict. The neural substrate of this recalibration is unknown. Here, we recorded single-neuron activity from the dorsal medial superior temporal (MSTd), parietoinsular vestibular cortex (PIVC), and ventral intraparietal (VIP) areas in three male rhesus macaques during this visual-vestibular recalibration. Both visual and vestibular neuronal tuning curves in MSTd shifted - each according to their respective cues' perceptual shifts. Tuning of vestibular neurons in PIVC also shifted in the same direction as vestibular perceptual shifts (cells were not robustly tuned to the visual stimuli). By contrast, VIP neurons demonstrated a unique phenomenon: both vestibular and visual tuning shifted in accordance with vestibular perceptual shifts. Such that, visual tuning shifted, surprisingly, contrary to visual perceptual shifts. Therefore, while unsupervised recalibration (to reduce cue conflict) occurs in early multisensory cortices, higher-level VIP reflects only a global shift, in vestibular space.
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Affiliation(s)
- Fu Zeng
- Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal UniversityShanghaiChina
| | - Adam Zaidel
- Gonda Multidisciplinary Brain Research Center, Bar-Ilan UniversityRamat GanIsrael
| | - Aihua Chen
- Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal UniversityShanghaiChina
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