• Proceedings of the ESK Conference
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• 1996.10a
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• pp.66-71
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• 1996

This study is to observe human observe human positive and negative sensibility according to modalities such as auditory, visual, olfactory and tactile sense. Twenty university students are participated in this study. Experiment is performed in the subject room specially designed. Measurement system is Spectrum 32 (Cadwell) and is capable of brain mapping. The results shows brain local areas showing statistically significant difference between the positive and negative sensibility in ergonomics.

• Journal of Information Technology Applications and Management
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• v.9 no.4
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• pp.165-177
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• 2002

For measuring EEG with the international 10-20 electrode system on 16 channels, and to analyze the interrelationship between the original signals and the changed signals after the stimulation, we use the scent of lavender which stimulates the olfactory sense. Moreover, the effect of the scent stimulation to the brain is analyzed. The purpose of this analysis is to apply these results to the computerized mapping of the brain signals and to find possible ways of specifying the source of the brain signals through various medical applications.

• Journal of Korea Society of Digital Industry and Information Management
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• v.6 no.4
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• pp.33-43
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• 2010

In this paper, we propose a floral scent recognition using odor sensors and a odor display using odor distribution system. Proposed odor recognition has method of correlation coefficient between sensors that select optimal sensors in floral scent recognition system of selective multi-sensors. Proposed floral scent recognition system consists of four module such as floral scent acquisition module, optimal sensor decision module, entropy-based floral scent detection module, and floral scent recognition module. Odor distribution system consists of generation module of distribution information, control module of distribution, output module of distribution. We applied to floral scent recognition for performance evaluation of proposed sensors decision method. As a result, application of proposed method with floral scent recognition obtained recognition rate of 95.67% case of using 16 sensors while applied floral scent recognition system of proposed sensor decision method confirmed recognition rate of 96% using only 8 sensors. Also, we applied to odor display of proposed method and obtained 3.18 thorough MOS experimentation.

• The Korean Journal of Pharmacology
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• v.22 no.1 s.38
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• pp.45-50
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• 1986

The involvement of central $_{{\alpha}2}$-adrenoceptors in the development of muricide (mouse-killing behavior) in the olfactoly bulbectomized (OB) rats was strudied. The fractional turnover rate of noradrenaline (NA) in forebrain from OB muricidal rats was significantly lowered than that from sham rats. However, after yohimbine or idazoxan treatment, NA turnover was significantly increased in concert with inhibition of the development of muricide in OB rats. By radioligand binding studies with $[^3H]$ yohimbine, the maximum binding $(B_{max})$ of $[^3H]$ yohimbine to cerebral cortical membrane from OB rats was significantly higher than that from sham rats without change of affinity for agonists and antagonists$(K_i)$. With these results it was suggested that muricidal behavior of OB rats has a close relevance to the hyperactivity of central $_{{\alpha}2}$-adrenoceptor system.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1996.11a
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• pp.99-113
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• 1996

Taurine, a ${\beta}$-amino acid, plays an important role as a neuromodulator and is necessary for the normal development of the brain. Since de novo synthesis of taurine in the brain is minimal and in vivo studies suggest that taurine does not cross the blood-brain barrier, the blood-cerebrospinal fluid (CSF) barrier is likely to play a role in taurine transport between the central nervous system and the systemic circulation. Therefore, we examined in vivo elimination of taurine from the CSF in the rat to characterize in vivo kinetics of elimination for taurine from the CSF is consistent with the in vitro study. Using a stereotaxic device, cannulaes were placed into the lateral ventricle and the cisterna magna of the rat. Radio-labelled taurine and inulin (a marker of CSF flow) were injected into the lateral ventricle, and the concentrations of the labelled compounds in the CSF were monitored for up to 3 hrs in the cisterna magna. The apparent clearance of taurine from CSF was greater than the estimated CSF flow (p<0.005), indicating that there is a clearance process in addition to the CSF flow. Taurine distribution into the choroid plexus was at least 10 fold higher than that found in other brain areas (e.g., cerebellum, olfactory bulb and cortex). When unlabelled taurine was co-administered with radio-labelled taurine, the apparent clearance of the labeled taurine was reduced (p<0.01), suggesting a saturable disposition of taurine from CSF. Distribution of taurine into the choroid plexus, cerebellum, olfactory bulb and cortex was similarly diminished, indicating that the saturable uptake of taurine into these tissues is responsible for the non-linear disposition. A pharmacokinetic model involving first order elimination and saturable distribution described these data adequately. The Michaelis-Menten rate constant estimated from in vivo elimination study is similar to that obtained in the in vitro uptake experiment Collectively, our results demonstrate that taurine is transported in the choroid plexus via a taurine is cleared from the CSF via a saturable process. This process may be functionally relevant to taurine homeostasis in the brain.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1983.05a
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• pp.18.3-19
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• 1983

Choanal atresia, described first by Johann Roedere (1755) is an obstruction between the nasal cavity and nasopharyngeal vault, and the diagnosis and treatment were developed because of severity of the disease. Embryologically, incomplete development of olfactory pit, or failure of nasobuccal membrane to rupture, or persistent remaining of buccopharyngeal membrane, etc, all forms the congenital choanal atresia. And the acquired type was the result from syphilis or diphtheria with a resultant stenosing cicatrix and after the inexpert surgery and the trauma. Multiple abnormalities may be present particularly affecting the head, the heart and the alimentary system in the congenital type. The operative technique employed would depend upon the type of obstruction(whether membranous or bony), the age of the patient, and the presence or absence of any associated pathologic condition. Since Emmert (1853) first tried blind puncture of the atretic plate with the trocar, other surgical techniques have been introduced over the years for the correction of choanal atresia, which were the transnasal, transpalatal, transantral and the transseptal approach. Among them, transpalatal approach was proved to be a popular technique, that it provides a direct route, thus permitting an exact reconstruction and low restenosis rate. Recently, we have experienced two cases of choanal atresia and treated successfully with transpalatal approach, so authors report these cases with a review of the literature.

• Science of Emotion and Sensibility
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• v.21 no.4
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• pp.11-24
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• 2018

This study was based on previous ones that demonstrate how social exclusion leads to a desire for physical warmth. Research was conducted using odor-induced emotions to predict social exclusion, leading to a pursuit of emotional warmth and avoidance of emotional distance. For this purpose, a preliminary study sought to select odors perceived to be emotionally warm and emotionally distant, after which two experiments verified differences in odor preference between the social exclusion group and the control group. Results indicated that individuals who have experienced social exclusion had a stronger preference for warm odors and a weaker preference for cold odors compared to those who have not been socially ostracized. This study has theoretical value in terms of expanding the social exclusion-induced desire for physical warmth into the emotional dimension as well as examining the avoidance of emotional coldness, which had been overlooked in previous research studies. This also leads to practical implications for comfort foods, character emotions, emotional-space design, and emotions for artificial-intelligence chatbots.

• Science of Emotion and Sensibility
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• v.23 no.4
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• pp.73-92
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• 2020

This article addresses the possibility of developing a new art appreciation method using olfaction, which was not previously considered an important sense in expanding the cultural enjoyment of visually impaired people. The human olfactory system is a faculty that is not considered very important in modern society; however, this is due to cultural factors, and from a biological point of view, the human sense of smell has sufficient potential for practical application. In this study, it is assumed that when various types of scent are perceived through this sense of smell, each has its own unconscious relation to color and concept, which researchers have termed "color directivity" and "concept directivity." Through experiments, the researchers found that some specific scents have color directivity and concept directivity, and in using these scents, they succeeded in delivering information about colors used in artworks to the visually impaired. Based on this study, we hope to continue our research on the use of color-concept directional scents that can convey the brightness and saturation of colors and more diverse hues.

• Korean Institute of Interior Design Journal
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• v.18 no.5
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• pp.200-210
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• 2009

The Sign system of nursing home plays an important role when an elderly adapts to new environment and gets on daily life autonomously. Common living spaces are expecially important in maintaining social nature, adequate signage should be installed to aid them in finding their ways. Sign system is a comprehensive system consisted of various factors. In this research, it has been categorized as signage and cueing. Signage includes text and graphic signs, and cueing consists of floor plan configuration and sensual mechanism of visual, auditory, olfactory senses. Using this framework, held investigation and analysis were held in common area(shared living room, shared dining room, toilet) of 14 Korean, 8 Northern European, and 10 Japanese nursing home facilities. The result revealed that even though sign system should work as a combined unit, each factor was planed without relations to each other and did not perform mutually complementary role. Signage was installed too high, without considering the posture of elderly. Korean facilities used abundant and diverse signage compared to other countries. Japanese nursing home preferred cueing method over signage, and those of Northern Europe used plentiful visual cues such as color and ornaments.

• Biotechnology and Bioprocess Engineering:BBE
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• v.5 no.2
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• pp.150-152
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• 2000

The investigation of electroantennogram (EAG) using insect antennad has been primarily focused on the measurement of insect pheromone. Insect has highly specialized olfactroy receptors inside their antennae. In this paper, EAG was applied to detect general oborants and the feasibility of this system for the olfactroy biosensor was investigated. Electroantennogram measurement was carried out using the antennae of male silkworm moth, bombyx mori, and ammonia gas as the model odorant. EAG parametres including peak ampiltude increased linearly with the ammonia concentration and the reproducible electrical signals were generated at least for 2 hrs after the antenna was cut off from the sulkworm moth.