Mood

박민현 대한소아청소년정신의학회 2021 대한소아청소년정신의학회 학술대회논문집 Vol.2021 No.11

다문화가정 소아청소년의 정신건강

박민현 대한소아청소년정신의학회 2023 대한소아청소년정신의학회 학술대회논문집 Vol.2023 No.11

이경화증 환자에서 등골 수술 후 청력변화의 양상

박민현,오승하,김종선,장선오 대한이비인후과학회 2008 대한이비인후과학회지 두경부외과학 Vol.51 No.10

Hearing loss is the main symptom of otosclerosis. Stapes surgery could restore the hearing ability, but the amount of restoration was changed as time passed. The aims of this study were to analyze the outcome of primary stapes surgery in otosclerosis and to compare hearing changes in stapedectomy and stapedotomy group. Subjects and Method:This study involved 221 ears, which were operated on for otosclerosis in Seoul National University Hospital from 1983 to 2005. We analyzed the hearing results of stapes surgery regarding air conduction, bone conduction, air-bone gap using the operation methods in preoperative, postoperative 1, 3, 6, 12, 24 months and after 36-months period. Results:Stapedectomy was performed in 75 ears and stapedotomy in 146 ears. There were no differences of mean age, preoperative hearing between stapedectomy and stapedotomy group. In the postoperative period, hearing thresholds were significantly decreased compared with preoperative period in each group. The stapedectomy group showed more improvement of air conduction and reduction of AB gap than the stapedotomy group. Results of bone conduction showed no difference after the postoperative 12 months period between the two groups. Hearing improvement went on upto postoperative 12 months. Development of sensorineural hearing loss was found in two patients (2.7%) in the stapedectomy group and in one patient (0.68%) in the stapedotomy group. Conclusion:Stapedectomy showed better hearing results, but had more risks of sensorineural hearing loss in this study. (Korean J Otorhinolaryngol- Head Neck Surg 2008;51:872-7)

미륵사상의 발생과 중심사상

박민현 한국정토학회 2015 정토학연구 Vol.24 No.-

불교사상에 있어 미륵사상은 아미타불의 정토사상과 함께 왕생사상을 대표하는 사상중의 하나이다. 그런데 특이하게도 미륵사상은 욕계천인 도솔천에의 왕생사상뿐만 아니라 미륵불의 중생구제라는 하생사상도 들어있어 불교 본연의 목적에 있어서는 결코 정토사상에 비해 뒤떨어진다고 할 수 없다. 이러한 미륵사상은 미륵6부경을 통해서 그 전모를 살펴볼 수 있지만, 그 사상은 이미 초기의 아함경전들에 단편적으로 또는 축약적으로 내포되어 있음을 알 수 있다. 비록 상생사상은 아함경에는 나타나 있지 않지만 도솔천에 존재하는 미륵보살의 존재에 대해서는 밝히고 있으며, 하생사상은 비교적 풍부하게 그 사상이 이미 설해져 있음을 알 수 있다. 그리고 현재 미륵상생경 과 하생경 류의 내용적인 분류에 대해서는 학자들 간에 이견이 존재하고 있는 것이 사실이나 이 두 부류의 성립시기에 대해서는 이견을 보이지 않는다. 하지만 필자의 연구에 의하면 그 성립시기에 대해서는 좀 더 심도 깊은 연구가 필요하다는 것을 알 수 있다. 즉 현재 통용되고 있는 학설로는 미륵상생경 이 하생경 류 보다 늦게 성립되었다고 보고 있지만, 증일아함경 의 「서품」과 축법호 역의 미륵하생경 의 내용, 나머지 하생경 류의 내용을 살펴보면 꼭 그렇지 않다는 것을 알 수 있다. 이들의 내용을 종합하면 기존의 연구들과는 달리 미륵상생경 은 적어도 현존하는 하생경 류 보다는 먼저 성립하였다고 보는 것이 옳을 듯하다. 아무튼 미륵사상은 이미 아함경 단계에서부터 그 사상의 전모가 드러나고 있으며, 이를 토대로 후대에 미륵사상은 미륵관계 경전에서 그 완성을 보였다고 할 수 있을 것이다. In thought on Maitreya, there are the rebirth of Tushita Heaven in the Heaven of desires and the thought of birth in this land that is the salvation of sentient beings. It means that the thought on Maitreya never falls behind than the thought of Pure Land in the original purpose of Buddhism. The rebirth of Tushita Heaven is to take an easy passage into eternity from Tushita Heaven after death and the thought of birth in this land is to receive a relief that will become a Buddha when Maitreya comes down to the ground after 5.6 billion years. It can look at the entire contents through the six scriptures of Maitreya and implicitly confirm such ideas in early agama . Therefore, it is very important to find out the form and substance of thought on Maitreya in early agama and to consider how they affects the later scriptures associated with Maitreya.

소아청소년정신의학 분야에서 시행되는 정책적 접근 및 인접 분야와의 통섭

박민현 대한신경정신의학회 2020 신경정신의학 Vol.59 No.3

돌출귀의 교정

박민현 대한이비인후과학회 2016 대한이비인후과학회지 두경부외과학 Vol.59 No.3

External ear anomaly was not uncommon disease. The spectrum of anomaly is wide, from mild anomalies including prominent ears, cryptotia to absence of external ear. In western countries, prominent ears were common and surgical correction was usually performed in their childhood period. However in Asian countries, including Korea, prominent ears were not considered correcting condition. Many techniques and skills were introduced to perform otoplasty since 19th century. For improving surgical result of otoplasty, operator should choose suitable surgical techniques considering patient’s condition in these techniques and can read demands of patients. Korean J Otorhinolaryngol-Head Neck Surg 2016;59(3):188-93

Differences in Performance of ADHD Children on a Visual and Auditory Continuous Performance Test according to IQ

박민현,권용실,이수정,박이진,이철,이창욱 대한신경정신의학회 2011 PSYCHIATRY INVESTIGATION Vol.8 No.3

ObjectiveaaContinuous performance tests (CPTs) are frequently used in clinical practice to assess the attentiveness of ADHD children. Although most CPTs do not categorize T scores by intelligence, there is great diversity of opinion regarding the interrelation between intelligence and CPT performance. This study aimed to determine if ADHD children with superior IQs would perform better than ADHD children with average IQs. Additionally, we aimed to examine the need for CPTs’ to categorize according to IQ. MethodsaaParticipants were 326 outpatients, aged 5-15 years, diagnosed with ADHD. All participants completed the Wechsler Intelligence Scale for Children-Revised and a CPT. After excluding those who meet exclusion criteria, we had 266 patients for our analysis. ResultsaaThe “Highly Intelligent Group” (HIG), patients with IQs 120 and above, performed superiorly to the “Normally Intelligent Group” (NIG) patients, with IQs between 70 and 120, with regard to omission and commission errors on the visual-auditory CPT, even after controlling for age and gender. The HIG had higher ratios of subjects with T scores <65 on the visual and auditory CPT variables than the NIG did. ConclusionaaThe results of this study suggest this CPT is not sensitive for discerning ADHD in children with superior IQs; thus, there is a need to standardize the variables based on IQ, as well as on age and gender. Moreover, clinicians need to pay attention to the effect of IQ in interpreting CPT scores; that is, a “normal” score does not rule out a diagnosis of ADHD.

청각계의 시간적 정보처리

박민현 대한이비인후과학회 2011 대한이비인후과학회지 두경부외과학 Vol.54 No.9

The auditory system recognized sound waves. The sound waves are longitudinal waves in the air, where the pressure varies in time. It is distinguished as the rapid pressure changes, referred to as ‘fine structure’, and slower overall changes of amplitude fluctuations, as ‘envelope’. The auditory system has a limited ability to follow the time-varying envelope, and this ability is known as ‘temporal resolution’. Our auditory system analyzes sound waves in frequency, intensity, and time domain. The understanding about frequency and intensity domain is relatively easy compare to time domain. Hearing threshold is measured by sound intensity in frequency domain. However the speech discrimination and understanding of the sentence in quiet and noise are associated with temporal resolution. So for the comprehensive understanding about the auditory system and hearing ability, we must extend our knowledge to the temporal ability of the auditory system.

웨이블릿 영상 처리를 이용한 Ball-Plate의 실시간 제어

박민현,김형배,남부희 제어로봇시스템학회 1999 제어로봇시스템학회 국내학술대회 논문집 Vol.4 No.10

Increased Resting-State Positron Emission Tomography Activity After Cochlear Implantation in Adult Deafened Cats

박민현,오승하,김진수,이선화,김도희 대한이비인후과학회 2023 Clinical and Experimental Otorhinolaryngology Vol.16 No.4

Objectives. Cochlear implants are widely used for hearing rehabilitation in patients with profound sensorineural hearingloss. However, Cochlear implants have variable results, and central neural plasticity is considered to be a reason forthis variability. We hypothesized that resting-state cortical networks play a role in conditions of profound hearing lossand are affected by cochlear implants. To investigate the resting-state neuronal networks after cochlear implantation,we acquired 18F-fluorodeoxyglucose (FDG)-positron emission tomography (PET) images in experimental animals. Methods. Eight adult domestic cats were enrolled in this study. The hearing threshold of the animals was within the normalrange, as measured by auditory evoked potential. They were divided into control (n =4) and hearing loss (n =4) groups. Hearing loss was induced by co-administration of ethacrynic acid and kanamycin. FDG-PET was performed in a nor-mal hearing state and 4 and 11 months after the deafening procedure. Cochlear implantation was performed in theright ear, and electrical cochlear stimulation was performed for 7 months (from 4 to 11 months after the deafeningprocedure). PET images were compared between the two groups at the three time points. Results. Four months after hearing loss, the auditory cortical area’s activity decreased, and activity in the associated visualarea increased. After 7 months of cochlear stimulation, the superior marginal gyrus and cingulate gyrus, which arecomponents of the default mode network, showed hypermetabolism. The inferior colliculi showed hypometabolism. Conclusion. Resting-state cortical activity in the default mode network components was elevated after cochlear stimulation. This suggests that the animals’ awareness level was elevated after hearing restoration by the cochlear implantation.