• Journal of Conservation Science
• /
• v.35 no.1
• /
• pp.61-70
• /
• 2019

In this study, a scientific survey on the material of the mother-of-pearl floor mirror was conducted and conservation treatment processes were introduced. The survey results showed that the mother-of-pearl floor mirror in Daejojeon Hall of Changdeokgung is made of Dalbergia spp., and repair work seems to be done later with shorea spp. FT-IR analysis results showed that the varnishing is similar to the spectrum of lacquer. The metal wheels and metal line decorations set with mother-of-pearl were found to be made of brass based on XRF analysis, and the ingredient ratio showed that these were made in modern times. Foreign materials were stuck on the surface of the mother-of-pearl floor mirror before conservation treatment, which was in a structurally unstable condition owing to some missing submaterials. Conservation treatment was conducted on the damaged area to restore the mirror to its original appearance by using the same species of wood determined from the data obtained through the scientific survey.

• The Korean Journal of Pain
• /
• v.25 no.4
• /
• pp.272-274
• /
• 2012

Phantom limb pain is a painful sensation that is perceived in a body part that no longer exists. To control this pain, many methods have been used such as medication, physical treatment, nerve block, neuromodulation, surgical treatment and mirror therapy. However, until now, there effects have been uncertain. We report the successful reduction of phantom limb pain using mirror therapy when other treatments initially failed to control the pain.

• The Journal of Korean society of community based occupational therapy
• /
• v.4 no.1
• /
• pp.33-45
• /
• 2014

Objective : We tested the effect of mirror treatment on patients with and without unilateral neglect over a period of 4 weeks. We also wanted to know the effect of mirror treatment with regards to improving upper extremity function and dealing with activities of daily living. Methods : Subjects were 10 hemiplegia patients with unilateral neglect and 10 hemiplegia patients without unilateral neglect. They visited the department of occupational therapy. We performed mirror treatment for 30 minutes, 5 times a week for 4 weeks. We used Albert Test to compare our results from before and after the treatment, Fugl-Meyer motor function Assessment(FMA) and Box & Block Test(BBT) for upper extremity function, and Functional Independence Measure(FIM) for activities of daily living. Results : The results showed that mirror treatment had an effect on stroke patients with unilateral neglect. The treatment also had an effect on upper extremity function and activities of daily living regardless of unilateral neglect. Conclusion : The mirror treatment showed improvements on upper extremity function and activities of daily life as well as a reduction in the unilateral neglect after a stroke. In conclusion, the mirror treatment is useful for recovering function and improvement and for helping the patients complete activities of daily living.

• Physical Therapy Rehabilitation Science
• /
• v.10 no.2
• /
• pp.212-216
• /
• 2021

Objective: Mirror therapy is one of the promising methods suggested for the upper limb rehabilitation of stroke patients. While mirror therapy was presented to be effective in improving motor function of stroke patients, problems were raised as preceding studies had various methods in applying mirror therapy. Some studies even reported no effect in mirror therapy. Our supposition for the reason of such problems was a decrease of attention on the illusive image during mirror therapy of stroke patients, and we aimed to observe this. Design: A cross-sectional preliminary study. Methods: Three hemiplegic acute patients were recruited for the traditional mirror therapy. It lasted for 30 minutes, and 12 different tasks were asked to perform. All procedures were video-recorded, and Observer XT was used to analyse mirror-gazing time, gaze-distracted time, preparation time, frequency of mirror gazing, frequency of distraction, frequency of preparation for treatment. Results: Subjects spent an average of 4-5 minutes having instructions about the mirror therapy intervention (preparation duration), an average of 11 minutes watching the mirror during therapy (mirror-gazing duration), and the rest of 14-15 minutes looking around the environment (gaze-distracted duration). During the mirror therapy, the number of distracted moments (frequency of distraction) was eight times more than focusing on the mirror (frequency of mirror gazing). Conclusions: Once the patient looks at the mirror, it only lasts about 5 seconds on average. Thus, we confirmed that patients could not concentrate on the illusion during the session and therefore it may have affected the effectiveness of the therapy.

• Journal of Conservation Science
• /
• v.37 no.1
• /
• pp.25-33
• /
• 2021

To extend the application of digital technology to the replication of artifacts, meticulous details of the process and the diversity of three-dimensional (3D) printing output materials need to be supplemented. Thus, in this study, a bronze mirror with Hwangbichangcheon inscription was digitalized by 3D scanning, converted into a voxel model, and virtual conservation treatment was performed using a haptic device. Furthermore, the digital mold of the bronze mirror completed by Boolean modeling was printed using a 3D sand-printer. Such contactless replication based on digital technology reflects the stability, precision, expressivity, collectivity, durability, and economic feasibility of artifacts. Its application can be further extended to cultural products as well as such areas as education, exhibition, and research. It is expected to be in high demand for metal artifacts that require casting. If empirical studies through experimental research on casting are supplemented in the future, it could extend the application of digital technology-based contactless replication methods.

• Korean Journal of Materials Research
• /
• v.28 no.4
• /
• pp.201-207
• /
• 2018

Infrared(IR) heating has many advantages, such as energy efficiency, reduced heating time, cleanliness, equipment compactness, high drying rate and easy automation. These features of IR heating provide widely industrial applications, such as surface heat treatment in semiconductor fabrication, thermoforming of polymers, drying and disinfection of food products, heating to metal forging, and drying of wet materials. In this study, the characteristics of a protected gold mirror were examined by spectrophotometer and the lifetime of the coating layers were evaluated by a cross-cutting method and salt spray test. The effects of manufacturing conditions on the protected gold mirror were seen and remedies for these effects were noted in order to improve the properties of the protected gold mirror in the drying process. The reflectance and lifetime of the protected gold mirror was influenced by manufacturing conditions, such as surface roughness and forming conditions of the anti-oxide layer, the adhesion layer, the reflecting layer and the protection layer. The results of this study showed that the protected gold mirror manufactured using a buffing method for pre-treatment resulted in the most effective reflectance. In addition, $Al_2O_3$ coating on an Al substrate as an anti-oxide layer was more effective than the anodizing process in the test of reflectance. Furthermore, the protected gold mirror manufactured by layers forming of various materials resulted in the most effective reflectance and lifetime when coated with $Al_2O_3$ as the anti-oxide layer, coated Cr as the adhesion layer, and coated $MgF_2$ as the protection layer.

• The Journal of the Korea Contents Association
• /
• v.14 no.3
• /
• pp.215-222
• /
• 2014

Recent years, mirror therapy or mirror neuron therapy has been used to improve neural damage of upper extremities among stroke patients. This systematic review was conducted to assess the clinical effect of mirror therapy used for the treatment of upper extremities for patients with stroke. After literature search, researchers selected for 9 randomized controlled clinical trial studies registered up to October 2013 based on PubMed database, using the following search terms: mirror therapy, mirror neuron, stroke, paresis, hemiplegia, upper extremity. There were significant improves of distal upper extremity function in the use of mirror therapy groups but the research using range of motion(ROM) as outcome measure. In conclusion, mirror therapy was more effective than conventional therapies or sham therapies for upper recovery of distal upper extremity function among stroke patients.

• Journal of The Korean Society of Integrative Medicine
• /
• v.4 no.4
• /
• pp.41-51
• /
• 2016

PURPOSE : The purpose of this study was to identify whether 3D motion input device based mirror therapy could improve on upper extremity function, quality of life and depression in chronic stroke patients METHOD : Thirty six patients with chronic stroke were enrolled and randomly divided into three groups: 3D leapmotion mirror therapy group, mirror therapy group, and sham therapy group. 3D leapmotion mirror therapy group performed 3D motion input device based mirror therapy, mirror therapy group performed general mirror therapy, control group performed sham therapy. All patients received a total of 15 exercise session over a 5 week period (three times per week). Fugl-Meyer Assessment-upper extremity(FMA-UE), Stroke Specific-Quality of Life(SS-QOL), Beck Depression Inventory(BDI) were performed prior to and five weeks after the treatment RESULT : Subjects in the 3D leapmotion mirror therapy group showed significant improvements in upper extremity function, quality of life and depression following training. The changes of upper extremity function, quality of life and depression in the 3D leapmotion mirror therapy group were significantly more than them of the control group. CONCLUSION : The result of this study suggest that 3D motion input device based mirror therapy is an intervention to improve on upper extremity function, quality of life and depression in chronic stroke patients.

• Journal of Cerebrovascular and Endovascular Neurosurgery
• /
• v.25 no.3
• /
• pp.340-346
• /
• 2023

Bilateral distal anterior cerebral artery (DACA) aneurysms also called "kissing aneurysms" or "mirror aneurysm" are extremely rare, accounting for only 0.2% of all intracranial aneurysms. There have only been a few examples of mirror DACA aneurysms reported in the literature. Here, we report a rare case of mirror DACA aneurysm in a middle aged female with its successful clipping. Patient was admitted with severe headache and altered sensorium. Computed tomography (CT) head was suggestive of anterior inter-hemispheric hematoma. Digital subtraction angiography (DSA) was done which was suggestive of two distal anterior cerebral artery aneurysms located at same anatomical position. It was treated through microsurgical clipping. Mirror image DACA aneurysms are rare occurrence. All patients with ruptured DACA aneurysms should have angiography with 3D reconstruction studies. This aids in determining the aneurysm's morphology and planning treatment accordingly.

• Therapeutic Science for Rehabilitation
• /
• v.2 no.1
• /
• pp.24-35
• /
• 2013

The Purpose of this study was to determine the clinical effectiveness of mirror therapy for stroke. Moreover, this paper was designed to summarize clarified information of neurological plasticity by mirror therapy to finally define the neurological mechanism. Mirror therapy improves the stroke patients' hand and arm motor function. It also has a positive influence on recovering performance of activities of daily living and relieving pain. However, it is not evident that mirror therapy restores visual neglect. There are various ways of recovering stroke. Fundamentally, all the theories are on a bases of restoration of premotor area. Premotor area which is associated with motor control increases the activation of primary motor area and finally improves patients' motor function. If primary motor area is completely damaged, premotor area and supplementary motor substitute for primary motor area. In summary of literature survey, there are not enough evidence to verify the effectiveness and neurological mechanism of mirror therapy. In future, more researches should be conducted to verify the neurological recovery through mirror therapy. Then, mirror therapy will be acknowledged as a clinically effective treatment.