scholarly journals Cross-Modal Effect of Presenting Visual and Force Feedback That Create the Illusion of Stair-Climbing

2021 ◽  
Vol 11 (7) ◽  
pp. 2987
Author(s):  
Takumi Okumura ◽  
Yuichi Kurita
Keyword(s):  
Visual Information ◽  
Force Feedback ◽  
Activity Level ◽  
Experimental Results ◽  
Stair Climbing ◽  
Mirror Therapy ◽  
Visual Condition ◽  
Stroke Patients ◽  
Head Mount Display ◽  
The Brain

Image therapy, which creates illusions with a mirror and a head mount display, assists movement relearning in stroke patients. Mirror therapy presents the movement of the unaffected limb in a mirror, creating the illusion of movement of the affected limb. As the visual information of images cannot create a fully immersive experience, we propose a cross-modal strategy that supplements the image with sensual information. By interacting with the stimuli received from multiple sensory organs, the brain complements missing senses, and the patient experiences a different sense of motion. Our system generates the sense of stair-climbing in a subject walking on a level floor. The force sensation is presented by a pneumatic gel muscle (PGM). Based on motion analysis in a human lower-limb model and the characteristics of the force exerted by the PGM, we set the appropriate air pressure of the PGM. The effectiveness of the proposed system was evaluated by surface electromyography and a questionnaire. The experimental results showed that by synchronizing the force sensation with visual information, we could match the motor and perceived sensations at the muscle-activity level, enhancing the sense of stair-climbing. The experimental results showed that the visual condition significantly improved the illusion intensity during stair-climbing.

scholarly journals MIRROR THERAPY IN STROKE REHABILITATION

2014 ◽  
Vol 6 (2) ◽  
Author(s):  
Lidwina S. Sengkey ◽  
Paola Pandeiroth
Keyword(s):  
Motor Function ◽  
Daily Living ◽  
Stroke Rehabilitation ◽  
Internal Capsule ◽  
Mirror Therapy ◽  
Stroke Patients ◽  
Beneficial Effects ◽  
Improve Motor Function ◽  
Set Up ◽  
The Brain

Abstract: Paralysis in stroke is mainly caused by damage of any kind in internal capsule. Recovering of these damages require neuroplasticity which involves parts of the brain survivors. One kind of therapies that has some beneficial effects on neuroplasticity is mirror therapy. This therapy is used to improve motor function after stroke. Mirror therapy is easy to set up and requires very little training without taxing the patient. Data obtained from several studies show that besides it is simple and cheap, this mirror therapy might have a significant effect on motor function and improve activities of daily living as an adjunct to the rehabilitation for stroke patients. This review aims to demonstrate the benefits of mirror therapy in stroke rehabilitation. Keywords: exercise therapy, mirror therapy, rehabilitation, stroke   Abstrak: Paralisis pada stroke terutama terjadi karena kerusakan di kapsula interna. Kerusakan ini memerlukan neuroplastisitas yang melibatkan sejumlah bagian otak yang selamat untuk memulihkannya. Salah satu terapi yang bermanfaat terhadap neuroplastisitas yaitu terapi cermin. Terapi ini digunakan untuk memperbaiki fungsi motorik pasca stroke. Terapi cermin mudah dilakukan dan hanya membutuhkan latihan yang sangat singkat tanpa membebani pasien. Data yang diperoleh dari beberapa penelitian memperlihatkan bahwa terapi cermin merupakan terapi yang sederhana, murah, dan efektif dalam memperbaiki fungsi motorik (baik ekstremitas atas maupun bawah) dan aktivitas kehidupan sehari-hari, sebagai tambahan untuk rehabilitasi yang umumnya dilakukan pada pasien dengan stroke. Telaah ini bertujuan untuk menunjukkan keuntungan terapi cermin pada rehabilitasi stroke. Kata kunci: terapi latihan, terapi cermin, rehabilitasi, stroke

scholarly journals PENGARUH TERAPI CERMIN TERHADAP KEMAMPUAN GERAK PADA PASIEN STROKE DI WILAYAH KERJA PUSKESMAS KUMPULAN KABUPATEN PASAMAN

2019 ◽  
Vol 6 (1) ◽  
pp. 49-53
Author(s):  
Muhammad Arif ◽  
Suci Mustika ◽  
Def Primal
Keyword(s):  
Public Health ◽  
Health Center ◽  
Statistical Tests ◽  
P Value ◽  
Mirror Therapy ◽  
Stroke Patients ◽  
Nerve Paralysis ◽  
Public Health Center ◽  
Quasi Experimental ◽  
The Brain

Background: Stroke is a disease or functional disorder of the brain in the form of nerve paralysis due to inhibition of blood vassel flow to the brain. Based on Medikal Record data of Kumpulan Public Health Center 2016, there were 67 cases. Whereas in 2017 there were 81 cases of stroke 25 witch of them outpatients who experience weakness in the limb and have never received mirror therapy. Objective: This study was to investigate "the effect of mirror therapy on the ability of motion in stroke patients in Kumpulan Public Health Center on 2018. Method: This study used the quasi-experimental method of One Group Pretest-postest. Interventions: Mirror therapy performed 5-10 minutes, once a day, 5 times a week for 4 weeks. The sample in this study were 11 respondents. Results: This research has been conducted from February 5 to March 3, 2018. The results of statistical tests obtained p value 0,000 wich it can be concluded that there is a significant influence between the mirror therapy on the ability of motion in stroke patients in Kumpulan Public Health 2018 year. Conclusion and Suggestions: It is recommended that mirror therapy should be used as one of the nonpharmacologic therapies in patients with weak extremities either through the provision of education in educational institutions and in health services by health care provider.

Effects of mirror therapy vs modified constraint induced movement therapy on upper extremity in subacute stroke patients

2021 ◽  
Vol 20 (2) ◽  
pp. 323-329
Author(s):  
Kamatchi Kaviraja ◽  
G Tharani ◽  
G Yuvarani ◽  
N Kaviraja ◽  
Jenifer Augustina S ◽  
...  
Keyword(s):  
Upper Extremity ◽  
Upper Limb ◽  
Movement Therapy ◽  
Systemic Hypertension ◽  
Mirror Therapy ◽  
Stroke Patients ◽  
Functional Index ◽  
Constraint Induced Movement Therapy ◽  
Subacute Stroke ◽  
The Brain

Objective: To compare and to examine the effectiveness of mirror therapy and modified constraint induced movement therapy (mCIMT) on upper extremity in subacute stroke patients. Background: Stroke or cerebral vascular accident is sudden dead of the brain cells due to inadequate blood flow. The WHO defines stroke as rapidly developing clinical signs of focal disturbance of cerebral function, with symptoms lasting for 24hrs or longer or leading to death, with no apparent cause other than of vascular origin. The most common consequence of stroke is loss of upper limb function. The protocol planned for improving the function of upper limb are mirror therapy and modified constraint induced movement therapy (mCIMT). Mirror therapy is a simple and inexpensive treatment which uses the visual information activating the premotor and motor cortex of the brain. This is explained by activation of so called mirrorneuron system. Whereas mCIMT utilises the redundant pathway in brain through neuro plasticity. Methodology: A total of 30 participants with subacute stroke were selected. The inclusion criteria are both gender of age 55-70 years and duration of 2-12 months of post stroke. Participants with mini mental state examination score<24, uncontrolled systemic hypertension, severe shoulder subluxation, previous stroke and severe cardiac failure were excluded. The outcome measures were measured using Upper Extremity Functional Index (UEFI) and Fugl Meyer Upper Extremity Scale. Procedure: All 30 participants with sub-acute stroke were divided into two groups. Both the group individuals were assessed for pre test using Fugl Meyer Upper Extremity Scale and Upper Extremity Functional Index Scale. Group A (15) was assigned to mirror therapy for 5 days a week, for 4 weeks and rest intervals was given. Similarly group B (15) was assigned to modified constraint induced movement therapy for 5 days a week, for 4 weeks. Both the groups were given conventional therapy for 20 mins. At the end of study subjects were assessed for post test using UEFI and Fugl Meyer upper extremity scale. Results: The Modified Constraint Induced Movement (mCIMT) is more effective than Mirror Therapy in improving the hemiparetic upper extremity in subacute stroke patients. Bangladesh Journal of Medical Science Vol.20(2) 2021 p.323-329

Synaesthesia

2018 ◽  
Author(s):  
Bruno and
Keyword(s):  
Experimental Results ◽  
Multisensory Perception ◽  
Related Phenomenon ◽  
Perceptual Modality ◽  
Sensory Channel ◽  
Multisensory Interactions ◽  
Crossmodal Associations ◽  
The Brain

Synaesthesia is a curious anomaly of multisensory perception. When presented with stimulation in one sensory channel, in addition to the percept usually associated with that channel (inducer) a true synaesthetic experiences a second percept in another perceptual modality (concurrent). Although synaesthesia is not pathological, true synaesthetes are relatively rare and their synaesthetic associations tend to be quite idiosyncratic. For this reason, studying synaesthesia is difficult, but exciting new experimental results are beginning to clarify what makes the brain of synaesthetes special and the mechanisms that may produce the condition. Even more importantly, the related phenomenon known as ‘natural’ crossmodal associations is instead experienced by everyone, providing another useful domain for studying multisensory interactions with important implications for understanding our preferences for products in terms of spontaneously evoked associations, as well as for choosing appropriate names, labels, and packaging in marketing applications.

scholarly journals How the Multiplicity of Suggested Information Affects the Behavior of a User in a Recommender System

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 741
Author(s):  
Yuseok Ban ◽  
Kyungjae Lee
Keyword(s):  
High Precision ◽  
Recommender System ◽  
Visual Information ◽  
Experimental Results ◽  
Supplementary Information ◽  
Digital Platform ◽  
Different Types ◽  
Types Of Information

Many researchers have suggested improving the retention of a user in the digital platform using a recommender system. Recent studies show that there are many potential ways to assist users to find interesting items, other than high-precision rating predictions. In this paper, we study how the diverse types of information suggested to a user can influence their behavior. The types have been divided into visual information, evaluative information, categorial information, and narrational information. Based on our experimental results, we analyze how different types of supplementary information affect the performance of a recommender in terms of encouraging users to click more items or spend more time in the digital platform.

scholarly journals Examination of Driver Visual and Cognitive Responses to Billboard Elicited Passive Distraction Using Eye-Fixation Related Potential

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1471
Author(s):  
Yongxiang Wang ◽  
William Clifford ◽  
Charles Markham ◽  
Catherine Deegan
Keyword(s):  
Visual Information ◽  
Driving Simulator ◽  
Tracking System ◽  
Eye Gaze ◽  
Driver Distraction ◽  
Experimental Results ◽  
Human Information Processing ◽  
Cognitive Responses ◽  
Information Processing Model ◽  
Eye Fixation

Distractions external to a vehicle contribute to visual attention diversion that may cause traffic accidents. As a low-cost and efficient advertising solution, billboards are widely installed on side of the road, especially the motorway. However, the effect of billboards on driver distraction, eye gaze, and cognition has not been fully investigated. This study utilises a customised driving simulator and synchronised electroencephalography (EEG) and eye tracking system to investigate the cognitive processes relating to the processing of driver visual information. A distinction is made between eye gaze fixations relating to stimuli that assist driving and others that may be a source of distraction. The study compares the driver’s cognitive responses to fixations on billboards with fixations on the vehicle dashboard. The measured eye-fixation related potential (EFRP) shows that the P1 components are similar; however, the subsequent N1 and P2 components differ. In addition, an EEG motor response is observed when the driver makes an adjustment of driving speed when prompted by speed limit signs. The experimental results demonstrate that the proposed measurement system is a valid tool in assessing driver cognition and suggests the cognitive level of engagement to the billboard is likely to be a precursor to driver distraction. The experimental results are compared with the human information processing model found in the literature.

scholarly journals Bio-Inspired Modality Fusion for Active Speaker Detection

2021 ◽  
Vol 11 (8) ◽  
pp. 3397
Author(s):  
Gustavo Assunção ◽  
Nuno Gonçalves ◽  
Paulo Menezes
Keyword(s):  
Superior Colliculus ◽  
Visual Information ◽  
Human Beings ◽  
Validation Process ◽  
Detection Approach ◽  
Wide Range ◽  
Speaker Detection ◽  
The One ◽  
The Brain ◽  
Fusion Ability

Human beings have developed fantastic abilities to integrate information from various sensory sources exploring their inherent complementarity. Perceptual capabilities are therefore heightened, enabling, for instance, the well-known "cocktail party" and McGurk effects, i.e., speech disambiguation from a panoply of sound signals. This fusion ability is also key in refining the perception of sound source location, as in distinguishing whose voice is being heard in a group conversation. Furthermore, neuroscience has successfully identified the superior colliculus region in the brain as the one responsible for this modality fusion, with a handful of biological models having been proposed to approach its underlying neurophysiological process. Deriving inspiration from one of these models, this paper presents a methodology for effectively fusing correlated auditory and visual information for active speaker detection. Such an ability can have a wide range of applications, from teleconferencing systems to social robotics. The detection approach initially routes auditory and visual information through two specialized neural network structures. The resulting embeddings are fused via a novel layer based on the superior colliculus, whose topological structure emulates spatial neuron cross-mapping of unimodal perceptual fields. The validation process employed two publicly available datasets, with achieved results confirming and greatly surpassing initial expectations.

scholarly journals Effectiveness of self-administered mirror therapy on upper extremity impairments and function of acute stroke patients: study protocol

Trials ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Venkadesan Rajendran ◽  
Deepa Jeevanantham ◽  
Céline Larivière ◽  
Ravinder-Jeet Singh ◽  
Lisa Zeman ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Upper Extremity ◽  
Outcome Measure ◽  
Outcome Evaluation ◽  
Secondary Outcome ◽  
Mirror Therapy ◽  
Stroke Patients ◽  
Extremity Function ◽  
Upper Extremity Function ◽  
Experimental Group

Abstract Background Many therapeutic interventions are performed by physiotherapists to improve upper extremity function and/or activities of daily living (ADL) in stroke patients. Mirror therapy (MT) is a simple technique that can be self-administered by the patients with intact cognition following patient education by a skilled physiotherapist. However, the effectiveness of self-administered MT in post-stroke patients in upper extremity function remains unclear. Therefore, the objective of this study is to examine the effectiveness of MT in improving upper extremity function and recovery in acute stroke patients. Methods This study is a single-center, prospective, randomized, open-label, controlled trial with blinded outcome evaluation (PROBE design), in which a total of 36 eligible acute stroke patients will be randomly assigned to control (n=18) and experimental group (n=18). Participants in the control group will receive regular rehabilitation interventions whereas participants in the experimental group will receive MT education in addition to their regular interventions for 4 weeks. Study outcome The primary outcome measure will be upper extremity function that will be measured using the Fugl-Meyer Assessment scale and the Wolf Motor Function Test. The secondary outcome measure will be behaviors related to ADL as estimated using the Modified Barthel Index. Outcome measures will be assessed at baseline and at 4 weeks post-rehabilitation intervention/MT. Results A two-way repeated analysis of variance (ANOVA) with time and group effects will be used to analyze between-group differences. The level of significance will be set at P < 0.05. Conclusion The results of the study will provide critical information to include self-administered MT as an adjuvant to regular interventions and may facilitate recovery of the upper extremity function of stroke patients. Trial registration ClinicalTrials.gov NCT04542772. Registered on 9 September 2020. Protocol version: Final 1.0.

Abstract TP274: Orosomucoid-1 Protein Increases Following Ischemic Stroke in the Brain and Periphery

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Hetal Mistry ◽  
Madeline Levy ◽  
Meaghan Roy-O'Reilly ◽  
Louise McCullough
Keyword(s):  
Sex Differences ◽  
Ischemic Stroke ◽  
Rna Sequencing ◽  
Multiple Testing ◽  
Enzyme Linked Immunosorbent Assay ◽  
Mrna Levels ◽  
Stroke Patients ◽  
Post Stroke ◽  
Protein Levels ◽  
The Brain

Background and Purpose: Orosomucoid-1 (ORM-1) is an abundant protein with important roles in inflammation and immunosuppression. We utilized RNA sequencing to measure mRNA levels in human ischemic stroke patients, with confirmation by serum ORM-1 protein measurements. A mouse model of ischemic stroke was then used to examine post-stroke changes in ORM-1 within the brain itself. Hypothesis: We tested the hypothesis that ORM-1 levels increase following ischemic stroke, with sex differences in protein dynamics over time. Methods: RNA sequencing was performed on whole blood from ischemic stroke patients (n=23) and controls (n=12), with Benjamini-Hochberg correction for multiple testing. Enzyme-linked immunosorbent assay was performed on serum from ischemic stroke patients (n=28) and controls (n=8), with analysis by T-test. For brain analysis, mice (n=14) were subjected to a 90-minute middle cerebral artery occlusion (MCAO) surgery and sacrificed 6 or 24 hours after stroke. Control mice underwent parallel “sham” surgery without occlusion. Western blotting was used to detect ORM-1 protein levels in whole brain, with analysis by two-way ANOVA. Results: RNA sequencing showed a 2.8-fold increase in human ORM-1 at 24 hours post-stroke (q=.0029), an increase also seen in serum ORM-1 protein levels (p=.011). Western blot analysis of mouse brain revealed that glycosylated (p=0.0003) and naive (p=0.0333) forms of ORM-1 were higher in female mice compared to males 6 hours post-stroke. Interestingly, ORM-1 levels were higher in the brains of stroke mice at 6 hours (p=.0483), while at 24 hours ORM-1 levels in stroke mice were lower than their sham counterparts (p=.0212). In both human and mouse data, no sex differences were seen in ORM-1 levels in the brain or periphery at 24 hours post-stroke. Conclusion: In conclusion, ORM-1 is a sexually dimorphic protein involved in the early (<24 hour) response to ischemic stroke. This research serves as an initial step in determining the mechanism of ORM-1 in the ischemic stroke response and its potential as a future therapeutic target for both sexes.

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