• 말소리와 음성과학
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• 제3권3호
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• pp.133-140
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• 2011

Muscle misuse dysphonia (MMD) is defined as a behavioral voice disorder resulting from inappropriate contractions of intrinsic and/or extrinsic laryngeal muscles. The purpose of this study was to investigate the effect of motor learning guided laryngeal motor control therapy (MLG-LMCT) which is designed to improve an existing LMT and further the effective voice treatment on people with muscle misuse dysphonia. Forty-six people with MMD (M:F=16:30) participated in this study. The voice samples of the participants were recorded to investigate the effect of MLG-LMCT before and after the voice therapy. Voice samples were analyzed via electro-glotto-graph (EGG). Contact quotient (CQ), speed quotient (SQ), and waveform were reported. In addition, perceptual and acoustical evaluation were conducted to determine the change of voice improvement after treatment. The experimenter massaged the tensioned muscles around the neck. In order to find more proper phonation the experimenter showed the subjects their EGG wave forms as to whether or not they are moving the vocal folds to the appropriate position. Therefore, the EGG wave forms were used as a type of visual feedback. With the wave form, the experimenter helped subjects move the vocal folds and laryngeal muscles to find more proper voice production. The sensory stimuli from the experimenter gradually faded out. A paired dependent t- test revealed that there was significant differences in CQ between pre- and post-therapy. Perceptually, overall, rough, breathy, strain, and transition were significantly reduced. Acoustically, there were significant differences in Fo, jitter, shimmer, and NHR. After using MLG-LMCT, most of the subjects showed improvements in voice quality. The results from this study led us to the following conclusions: Motor learning guided laryngeal motor control therapy (MLG-LMCT) has reduces muscle misuse dysphonia. These results may occur because a visual feedback from EGG wave form can maintain the effect of the muscle tension reduction from laryngeal manual therapy. In case of people with MMD who reduced muscle tension from the therapy (LMT) but, not appropriately manipulating the location of larynx or adducting the vocal folds, MLG-LMCT might be an alternative therapy approach.

• 생물정신의학
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• 제6권2호
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• pp.259-263
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• 1999

Nefazodone, a newer antidepressant is a phenylpiperazine derivative that inhibits the reuptake of both norepinephrine and serotonin, and antagonizes $5-HT_{2A}$ and ${\alpha}_1$ adrenergic receptors. Compared with SSRIs, nefazodone caused the fewer activating symptoms, adverse gastrointestinal effects(nausea, diarrhea, anorexia) and adverse effects of sexual function, but is associated with the more dizziness, dry mouth, constipation, visual disturbances and confusion. We report on 4 cases of visual disturbances and hallucinations in patients taking nefazodone. It is not certain what mechanisms mediated these side effects, but three mechanisms are possible. 1) Nefazodone, as a 5-HT2 antagonist, might induce visual disturbances. 2) mCPP, metabolite of nefazodone might contribute to the hallucination through action on 5-HT receptor. 3) Dopaminergic enhancing activity of nefazodone might cause hallucination. These case report raises the possibility that dose-related perceptual disturbances may exist with nefazodone. The fact emphasizes the need to pay close attention to all possible drug interactions, particularly in patients treated with multiple psychoactive agents, older patients, and patients with decreased hepatic function.

• 음성과학
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• 제7권2호
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• pp.19-35
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• 2000

Speech evaluation and treatment planning for the patients with articulation disorders have traditionally been based on perceptual judgement by speech pathologists. Recently, various computerized speech analysis systems have been developed and commonly used in clinical settings to obtain the objective and quantitative data and specific treatment strategies. 10 dysarthric children (6 neurogenic and 4 functional dysarthria) participated in this experiment. Speech evaluation of dysarthria was performed in two ways; first, the acoustic analysis by Visi-Pitch and a Computerized Speech Lab and second, the perceptual scoring of phonetic errors rates in 100 word test. The results of the initial evaluation served as primary guidlines for the indivisualized treatment planning of each patient's speech problems. After mean treatment period of 5 months, the follow-up data of both dysarthric groups showed increased maximum phonation time, increased alternative motion rate and decreased occurrence of articulatory deviation. The changes of acoustic data and therapeutic effects were more prominent in children with dysarthria due to neurologic causes than with functional dysarthria. Three cases including their pre- and post treatment data were illustrated in detail.

• 대한후두음성언어의학회지
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• 제13권2호
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• pp.145-150
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• 2002

Background and Objectives : Patients with so-called 'functional voice disorders' who have structurally normal larynges and demonstrate muscle misuse in the larynx, and those with several interacting causes including habitual muscle tension, are probably better defined as having a 'muscle misuse voice disorder'. The purpose of this study was to analyze the voice and effectiveness of voice therapy in patients with functional voice disorders and to provide a guide for the treatment of functional voice disorder. Materials and Method : The records of 35 patients, presenting with functional voice disorder and receiving voice therapy during October, 2001 to September, 2002, were reviewed. Prior to voice therapy, the stroboscopic examination of their larynx, aerodynamic and acoustic analysis was done. The results of voice therapy were compared according to the patient's subjective, perceptual evaluation of voice, and maximal phonation time. Results : Patient's subjective, perceptual evaluation, and maximal phonation time showed superior results after voice therapy. Conclusion : The result of this study indicates that voice therapy is an effective treatment method of patients with functional voice disorder, especially muscular tension dysphonia.

• 인지과학
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• 제11권3_4호
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• pp.13-22
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• 2000

단어 정체확인 과정을 요구하지 않고 기억 과제와 무관한 단어의 지각적 특질에만 근거하여 공간적 주의를 할당하도록 하는 경우, 이러한 공간적 주의의 차이가 단어의 암묵기억에 미치는 영향을 두 개의 실험을 통하여 알아보았다. 실험 1에서는 독특한 색을 가진 표적자극의색을 판단하는 시각 탐색 과제를, 실험 2에서는 단서가 주어진 위치에 제시된 단어자극의 색을 판별하도록 하는 초점 주의 과제를 실시한후, 단어완성검사를 통하여 암묵기억을 측정하였다. 두 실험 결과, 방해자극뿐 아니라 표적자극에 대해서도 유의미한 점화효과가 관찰되지 않았다. 이는 기억 과제와 무관한 지각적 특질에 주의를 주는 것만으로는 단어에 대한 암묵기억 표상을 형성하기 어려우며, 단어에 대한 암묵기억 표상을 형성하기 위해서는 자극의 부호화 과정에서 단어 정채 확인 과정이 필요함을 시사한다.

• 말소리와 음성과학
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• 제7권2호
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• pp.9-17
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• 2015

In the present study, we investigated ability of recognition of auditory perception with regards to the quality of voice in postlingual CI adults and proposed a training program to improve within subject reliability. A prospective case-control study was conducted in adults with 7 postlingual deaf who received a CI surgery and 10 normal hearing controls. The pre and post test and training program included parameters of consensus auditory-perceptual evaluation of voice(CAPE-V) with pathological voice sample by using Alvin. In results of pre-post test for monitoring improvements of internal reliability for listeners via the training program, there was statistically significant difference in both test and group. There was statistically significant difference in internal reliability between pre-post test in the normal hearing group, the result was no significant in the CI group. The present study found that CI adults showed less ability in awareness of voice quality compared to normal hearing group. Also the training program improved pitch and loudness in CI adults.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2005년도 추계 학술대회 발표논문집
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• pp.189-192
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• 2005

This study investigates the asymmetry effect between acoustics and perception. The examined cues are closure duration, closure voicing, VOT, release, pre-vowel duration, post-vowel duration. Five native speakers of English and 30 Korean college students participated in the present study. The results showed that high level Korean English learners parallels native speakers in their responses, while mid and low level Korean learners are substantially different from natives.

• 대한후두음성언어의학회지
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• 제7권1호
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• pp.32-38
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• 1996

The preservation of the voice-producing mechanism is an important feature in the management of laryngeal cancer by radiotherapy. But, radiation therapy has certain side effects such as mucositis, tissue edema, necrosis and fibrosis which could effect on normal voice production. Several subjective studies that used questionnaires and auditory perceptual judgements of voice have been interpreted to mean that radiation results in a normal or near-normal voice. Objective evidence of the status of vocal function after radiation treatment, however, is still lacking. We analyzed the changes that occur in voice parameters in a group of patients undergoing radiation therapy, in order to determine the effect of radiation on voice quality. In this study acoustic, aerodynamic measures of vocal function were used to determine the characteristics of voice production. We found that voice parameters in early glottic cancer changed meaningfully comparing to normal larynx with or without radiation and radiation therapy has an little effect on normal larynx.

• 인지과학
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• 제20권3호
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• pp.243-274
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• 2009

단어재인에 영향을 미치는 세 변인으로 연상, 단어 사용빈도, 심상성을 들 수 있다. 본 연구는 심상성이 단어재인에 미치는 영향을 살펴보고 심상성의 효과를 설명하는 두 가지 이론(이중 부호화 이론, 맥락 가용성 모델)을 검증하고자 하였다. 대학생 실험 참가자에게 연상 강도와 심상성을 통제한 단어 쌍을 제시하고 어휘판단 과제를 수행하게 하였다. 세 실험에서 과제의 점화자극 제시시간을 각각 달리하여 점화자극 제시시간에 따라 변화하는 두 변인의 효과 및 상호작용 효과를 관찰하였다. 점화자극 제시시간이 가장 짧은(20ms) 실험 1에서는 심상성의 주효과만 통계적으로 유의미 하였으며, 연상 강도가 영향을 미치지 못한 단어재인의 초기시점부터 심상성의 효과가 나타남을 확인하였다. 실험 2에서는 점화자극 제시시간을 50ms로 하였다. 결과, 연상 강도의 주효과와, 심상성의 주 효과, 두 변인의 상호작용 효과가 모두 관찰되었다. 실험 3에서는 점화자극을 비교적 길게(450ms) 제시하였다. 결과, 연상 강도의 주효과만 유의미하게 나타났다. 세 실험에서 모두 전반적으로 이중 부호화 이론의 설명과 일치하는 결과를 얻었다. 이중 부호화 이론의 경우 독립적으로 나타나는 심상성의 효과(예: 실험 1, 2)만을 설명하고 있으며, 맥락 가용성 모델은 독립적으로 나타나는 의미맥락의 효과(예: 실험 3)만을 설명하고 있다. 따라서 두 변인이 단어재인에 미치는 시간적 맥락과 그 영향의 크기를 적절히 고려한 통합된 이론이 요구된다는 점을 논의하였다.

• 말소리와 음성과학
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• 제1권2호
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• pp.43-49
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• 2009

Vocal polyps are benign phonotraumatic lesions which are traditionally treated using phonomicrosurgical techniques. In the case of hyperfunctional voice use, voice therapy is effective and results in voice improvement. However, the utility of voice therapy about vocal polyp is in great demand. The purpose of this study was to evaluate the effects of voice therapy in patients with vocal polyps. The authors reviewed the medical records of 193 patients with vocal nodules or vocal polyps, and 64 patients (31 nodules and 33 polyps) were enrolled. All of the subjects had received explanation of problems, vocal hygiene education, and been treated by the $SKMVTT^{(R)}$ (Seong-Tae Kim's multiple voice therapy technique) ranging from 4 to 16 sessions (mean: 8.6 sessions). All subjects were examined by perceptual assessment, acoustic and aerodynamic measures, and VRP (voice range profile). In perceptual assessment, patients with vocal nodules had more breathy and strained voices than the vocal polyp group. Both groups significantly reduced rough, breathy voice after voice therapy. Patients with vocal polyps had worse voice quality than patients with nodules in acoustic measures. Both groups showed reduced jitter and shimmer after voice therapy. In aerodynamic measures, MPT and Psub were increased, and MFR was reduced (p<.05). Participants' frequency range and intensity range were increased after voice therapy, but only frequency range resulted in a significant difference (p<.05). In conclusion, the therapeutic effect of voice therapy in patients with vocal nodules and polyps was demonstrated perceptually and acoustically. We can suggest that voice therapy, including advice, vocal hygiene, and $SKMVTT^{(R)}$ is a useful as an initial choice of treatment for patients with vocal polyps before considering a surgical approach.