Background: The COVID-19 pandemic disrupted traditional qualitative research methods, necessitating innovative approaches to data collection that avoided physical contact. Aim: To introduce and reflect upon audio diaries as a novel qualitative technique for capturing healthcare workers' lived experiences in crisis contexts. Methods: Healthcare professionals in Barcelona, Spain, recorded their thoughts, reflections, and concerns using WhatsApp audio notes. The study was conducted in two phases: the first during the initial pandemic wave (March-July 2020) and the second during a less restrictive period. Results: In the first phase, seven healthcare professionals provided 147 audio entries (2-10 minutes each). In the second phase, five professionals submitted 12 entries (26 seconds to 23 minutes). Audio diaries demonstrated several strengths, including efficiency, authenticity promotion, establishment of an informal therapeutic space, and the capturing of emotional content through voice tonality. Conclusion: Audio diaries offer a valuable alternative for collecting rich, transferable data in situations where traditional face-to-face techniques are not feasible, particularly in crisis contexts. This methodological innovation has implications for future qualitative research, especially in challenging or restricted environments.
Přímé podání dosahuje nejvyšších rychlostí. Pro jeho úspěšné provedení je základem si správně nadhodit míč a zasáhnout ho. Cílem je zjistit, jaký vztah má nadhoz na úspěšnost prvního (přímého) podání u hráček tenisu. Sledovali jsme 8 závodních hráček tenisu dospělé kategorie. Každá z nich provedla 40 přímých podání. Ty byly natáčeny na rychloběžnou kameru (200Hz) z bočního pohledu. Kartézský souřadný systém obsahoval osu X (ve směru základní čára – síť) a osu Y (výšku od země). Na základě 2D kinematické analýzy jsme hodnotili bod vrcholu nadhozu a zásahu míče u podání dle kategorií jeho úspěšnosti: 1) úspěšné 2) do sítě 3) do autu – dlouhý 4) do autu – do strany. Data byla analyzována analýzou rozptylu pro opakovaná měření. Výsledky ukázaly, že vrchol nadhozu byl statisticky významně nižší (cca o 5 cm) u podaní do autu do strany (351,7 ± 21,9 cm) proti ostatním třem sledovaným kategoriím úspěšnostem podání (p < 0,05). Zásah míče neukázal žádné statisticky významné rozdíly, i když podání do autu do strany byla zasahována nejblíže základní čáry a podání do sítě nejdále. Kinematická analýza ukázala určité charakteristiky nadhozu dle kategorizace úspěšnosti i jistou jeho variabilitu. Nadhoz podání ovlivňuje úspěšnost podání, avšak hráčky mohou do jisté míry pomocí vlastních pohybových dovedností kompenzovat jeho nepřesnosti a korigovat svůj pohyb a docílit úspěšného podání. Jedním z častých důvodů podání do autu do strany je nízký nadhoz.
The flat serve reaches the highest speeds. To execute it successfully, the key is to toss the ball correctly and hit it. The aim is to determine the relationship between the toss and the success of the flat serve in female tennis players. We observed 8 competitive female adult tennis players who served 40 flat serves each. They were videotaped on a high-speed camera (200Hz) from the side view. On the basis of 2D kinematic analysis, we evaluated the racket-ball impact during 1) successful serves 2) serves into the net 3) serves fault-long 4) serves fault-wide. Using repeated measures ANOVA, the results showed that the toss peak was significantly lower (approx. 5 cm) for fault serves wide 351,7 ± 21,9 cm ((p < 0.05) compared to all other serve outcomes. The ball impact did not show any statistically significant differences, although fault serves wide had racket-ball contact closest to the baseline, and serves into the net the furthest. Kinematic analyses revealed some characteristics and variability in serve toss of selected serve outcomes. The serve toss affects the success of the serve, but players can to some extent use their own movement skills to compensate for its inaccuracies and make corrections in their movement to achieve a successful serve. One reason for fault serve wide is a low toss.
- MeSH
- Data Analysis MeSH
- Biomechanical Phenomena MeSH
- Time Factors MeSH
- Humans MeSH
- Motor Skills MeSH
- Motion Capture methods MeSH
- Athletes statistics & numerical data MeSH
- Athletic Performance * statistics & numerical data MeSH
- Tennis * physiology statistics & numerical data MeSH
- Videotape Recording methods MeSH
- Check Tag
- Humans MeSH
- Female MeSH
- Publication type
- Clinical Study MeSH
OBJECTIVES: To assess the ability, as well as factors affecting the ability, of ultrasound examiners with different levels of ultrasound experience to detect correctly infiltration of ovarian cancer in predefined anatomical locations, and to evaluate the inter-rater agreement regarding the presence or absence of cancer infiltration, using preacquired ultrasound videoclips obtained in a selected patient sample with a high prevalence of cancer spread. METHODS: This study forms part of the Imaging Study in Advanced ovArian Cancer multicenter observational study (NCT03808792). Ultrasound videoclips showing assessment of infiltration of ovarian cancer were obtained by the principal investigator (an ultrasound expert, who did not participate in rating) at 19 predefined anatomical sites in the abdomen and pelvis, including five sites that, if infiltrated, would indicate tumor non-resectability. For each site, there were 10 videoclips showing cancer infiltration and 10 showing no cancer infiltration. The reference standard was either findings at surgery with histological confirmation or response to chemotherapy. For statistical analysis, the 19 sites were grouped into four anatomical regions: pelvis, middle abdomen, upper abdomen and lymph nodes. The videoclips were assessed by raters comprising both senior gynecologists (mainly self-trained expert ultrasound examiners who perform preoperative ultrasound assessment of ovarian cancer spread almost daily) and gynecologists who had undergone a minimum of 6 months' supervised training in the preoperative ultrasound assessment of ovarian cancer spread in a gynecological oncology center. The raters were classified as highly experienced or less experienced based on annual individual caseload and the number of years that they had been performing ultrasound evaluation of ovarian cancer spread. Raters were aware that for each site there would be 10 videoclips with and 10 without cancer infiltration. Each rater independently classified every videoclip as showing or not showing cancer infiltration and rated the image quality (on a scale from 0 to 10) and their diagnostic confidence (on a scale from 0 to 10). A generalized linear mixed model with random effects was used to estimate which factors (including level of experience, image quality, diagnostic confidence and anatomical region) affected the likelihood of a correct classification of cancer infiltration. We assessed the observed percentage of videoclips classified correctly, the expected percentage of videoclips classified correctly based on the generalized linear mixed model and inter-rater agreement (reliability) in classifying anatomical sites as being infiltrated by cancer. RESULTS: Twenty-five raters participated in the study, of whom 13 were highly experienced and 12 were less experienced. The observed percentage of correct classification of cancer infiltration ranged from 70% to 100% depending on rater and anatomical site, and the median percentage of correct classification for the 25 raters ranged from 90% to 100%. The probability of correct classification of all 380 videoclips ranged from 0.956 to 0.975 and was not affected by the rater's level of ultrasound experience. The likelihood of correct classification increased with increased image quality and diagnostic confidence and was affected by anatomical region. It was highest for sites in the pelvis, second highest for those in the middle abdomen, third highest for lymph nodes and lowest for sites in the upper abdomen. The inter-rater agreement of all 25 raters regarding the presence of cancer infiltration ranged from substantial (Fleiss kappa, 0.68 (95% CI, 0.66-0.71)) to very good (Fleiss kappa, 0.99 (95% CI, 0.97-1.00)) depending on the anatomical site. It was lowest for sites in the upper abdomen (Fleiss kappa, 0.68 (95% CI, 0.66-0.71) to 0.97 (95% CI, 0.94-0.99)) and highest for sites in the pelvis (Fleiss kappa, 0.94 (95% CI, 0.92-0.97) to 0.99 (95% CI, 0.97-1.00)). CONCLUSIONS: Ultrasound examiners with different levels of ultrasound experience can classify correctly predefined anatomical sites as being infiltrated or not infiltrated by ovarian cancer based on video recordings obtained by an experienced ultrasound examiner, and the inter-rater agreement is substantial. The likelihood of correct classification as well as the inter-rater agreement is highest for sites in the pelvis and lowest for sites in the upper abdomen. However, owing to the study design, our results regarding diagnostic accuracy and inter-rater agreement are likely to be overoptimistic. © 2025 The Author(s). Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
- MeSH
- Video Recording MeSH
- Abdomen diagnostic imaging pathology MeSH
- Neoplasm Invasiveness diagnostic imaging MeSH
- Clinical Competence * MeSH
- Middle Aged MeSH
- Humans MeSH
- Ovarian Neoplasms * diagnostic imaging pathology MeSH
- Observer Variation MeSH
- Pelvis diagnostic imaging pathology MeSH
- Prevalence MeSH
- Aged MeSH
- Ultrasonography methods MeSH
- Check Tag
- Middle Aged MeSH
- Humans MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Multicenter Study MeSH
- Observational Study MeSH
- Research Support, Non-U.S. Gov't MeSH
This paper describes a compact video-ophthalmoscope (VO) designed for capturing retinal video sequences of the optic nerve head (ONH) under flicker light stimulation. The device uses an OLED display and a fiber optic-coupled LED light source, enabling high-frame-rate video at low illumination intensity (12 μW/cm2). Retinal responses were recorded in 10 healthy subjects during flicker light exposure with a pupil irradiance of 2 μW/cm2. Following 20 s of stimulation, all subjects displayed changes in retinal reflectance and pulsation attenuation, linked to blood flow and volume variations. These findings suggest that increased blood volume leads to decreased retinal reflectance. Temporal analysis confirmed the ability to capture flicker-induced retinal reflectance changes, indicating its potential for spatial and temporal analysis. Overall, this device offers a portable approach for investigating dynamic retinal responses to light stimuli, which can aid the diagnosis of retinal diseases like diabetic retinopathy, glaucoma, or neurodegenerative diseases affecting retinal blood circulation.
- MeSH
- Video Recording * instrumentation MeSH
- Adult MeSH
- Humans MeSH
- Young Adult MeSH
- Ophthalmoscopes * MeSH
- Retina * radiation effects physiology MeSH
- Photic Stimulation * MeSH
- Light * MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Young Adult MeSH
- Male MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
OBJECTIVES: Current research affirms that sufficiently high knowledge about epilepsy is crucial for reducing stigmatization and improving the quality of life for people with epilepsy. While educational interventions targeting older children, adolescents, and adults are relatively common, there is a notable lack of approaches suitable for preschool children. Building on our previous research, which focused on educational interventions using a game and a story, this study aims to evaluate the effectiveness of two video-based interventions, Campi the Seahorse and Adventure While Fishing, in children aged 5-6 years with no prior knowledge about epilepsy. METHODS: A total of 199 children participated in two intervention studies. Knowledge about epilepsy was assessed through interviews using an 11-item test that had been successfully employed in our previous intervention studies, demonstrating satisfactory internal consistency and construct validity. The level of knowledge was evaluated immediately after each intervention and one month later. Additionally, satisfaction with the intervention and its potential impact on epilepsy-related stigma were measured using a smiley-face scale. RESULTS: The Adventure While Fishing intervention demonstrated notable effectiveness compared to our previously developed intervention using an educational story. Its impact was also significant when compared to the level of knowledge observed in children aged 9-11 years with no prior exposure to epilepsy-related interventions. In contrast, the outcomes of the Campi the Seahorse intervention were significantly poorer across all comparisons, likely due to its insufficient coverage of key aspects of the topic. CONCLUSIONS: The results indicated that the Adventure While Fishing intervention was an effective approach to establishing basic knowledge about epilepsy within the targeted age group. In contrast, the Campi the Seahorse intervention would require further extension and/or modification to achieve sufficient effectiveness for this purpose.
- MeSH
- Video Recording MeSH
- Child MeSH
- Epilepsy * psychology therapy MeSH
- Humans MeSH
- Child, Preschool MeSH
- Patient Education as Topic methods MeSH
- Health Knowledge, Attitudes, Practice * MeSH
- Check Tag
- Child MeSH
- Humans MeSH
- Male MeSH
- Child, Preschool MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
BACKGROUND: Excess fluid in the interstitium can adversely affect the microcirculation. We studied how gradual dilution of the blood plasma by crystalloid fluid influences microcirculatory variables and capillary filtration in 20 patients undergoing surgery. METHODS: Video recordings of the sublingual mucosal were made on four occasions during the surgery and compared with quasi-measurements of the capillary filtration rate using retrospective volume kinetic data collected over 5-10-minute periods during 262 infusion experiments with crystalloid fluid. RESULTS: The number of crossings (vessel density) increased up to plasma dilution of 15-20 % whereafter it decreased. The proportion of the vessels that were perfused (PPV) decreased and reached a nadir of -15 % at a dilution of 20-30 %. Changes in the number of crossings and the PPV correlated (r = 0.62, P < 0.001) but the curve was displaced so that crossings showed no change when PPV had decreased by approximately 10 %. However, the PPV of vessels with a thickness of ≤25 μm increased or remained constant in the dilution range of up to 20 %. The volume kinetic analysis showed that the capillary filtration was greater than expected from proportionality with the volume expansion up to a plasma dilution of 15 %, the greatest difference (+89 %) being for plasma dilution up to 5 %. CONCLUSION: Plasma dilution of up to 15 % increased the vessel density, and the capillary filtration increased by more than suggested by the volume expansion. Dilution >15 % had a negative influence on these variables.
- MeSH
- Video Recording MeSH
- Time Factors MeSH
- Adult MeSH
- Hemodilution * MeSH
- Isotonic Solutions administration & dosage MeSH
- Capillary Permeability MeSH
- Capillaries physiopathology MeSH
- Kinetics MeSH
- Crystalloid Solutions * administration & dosage MeSH
- Middle Aged MeSH
- Humans MeSH
- Microcirculation * MeSH
- Regional Blood Flow MeSH
- Retrospective Studies MeSH
- Blood Flow Velocity MeSH
- Aged MeSH
- Mouth Mucosa blood supply MeSH
- Mouth Floor blood supply MeSH
- Check Tag
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
Jednou z hlavních herních činností jednotlivce, na které záleží úspěch či neúspěch týmu v plážovém volejbale, je nahrávka. Nahrávka je činnost charakterizována jako odbití míče po přihrávce k vybranému smečaři. Jednou z hlavních svalových skupin, které jsou pro plážové volejbalisty důležité jsou hamstringy. Hamstringy pomáhají s flexí dolní končetiny v koleni a pomáhají s extenzí dolní končetiny v kyčelním kloubu. Studie si klade za cíl posoudit aktivitu hamstringů u vybrané herní činnosti. Studie předpokládá, že zapojení pravé a levé strany při nahrávce spodem i při nahrávce vrchem bude stejné. Zároveň je předpokládem, že u nahrávky spodem obouruč, bude aktivita hamstringů vyšší než u nahrávky vrchem obouruč. Hlavní použitou metodou pro sběr dat bylo měření pomocí povrchové elektromyografie. Pro sběr dat byl použit přístroj Ultium (Noraxon, USA), společně s kamerovým systémem Nixon. Pro zpracování dat bylo použito prostředí pro statistické výpočty R. Pro výpočet testových kritérií byl použit Mannův-Whitney U test. Z jeho výsledků vyplývá, že strany jsou do nahrávky zapojené symetricky. Nicméně statisticky významný rozdíl se projevuje mezi nahrávkou pomocí odbití vrchem a odbitím spodem u pravého bicepsu (P = 0,0337) i u pravého semitendinosus (P = 0,0097). Z výsledků můžeme konstatovat, že u nahrávky by nemělo docházet ke svalovým dysbalancím.
One of the main playing activities of an individual that depends on the success or failure of a team is setting. The setting is characterised by the action as the beating of a ball after a pass to the attacker. One of the main muscle groups that are important to beachvolleyball players is hamstrings. Hamstrings help with lower leg flexion in the knee and help with lower leg extension in the hip joint. The study aims to assess hamstring activity in selected gaming activity. We assume that the involvement of the right and left sides in the setting at the bottom and in the setting at the top will be the same.The main method used for data collection was measurement using surface electromyography. The Ultium (Noraxon, USA) instrument was used to collect the data, along with the Nixon camera system.Mann Whitney U test was used for statistical calculations The results indicate that the parties are symmetrically involved in the setting. However, a statistically significant difference occurs between the setting using the upper and lower strokes of the right bicep (P = 0,0337) and the right semitendinosus (P = 0,0097). We can conclude from the results that there should be no muscular imbalance in the setting.
- MeSH
- Data Analysis MeSH
- Biomechanical Phenomena physiology MeSH
- Electromyography methods MeSH
- Humans MeSH
- Adolescent MeSH
- Musculoskeletal System MeSH
- Postural Balance physiology MeSH
- Videotape Recording methods MeSH
- Volleyball * statistics & numerical data MeSH
- Hamstring Muscles * physiology MeSH
- Check Tag
- Humans MeSH
- Adolescent MeSH
- Female MeSH
- Publication type
- Clinical Study MeSH
- Research Support, Non-U.S. Gov't MeSH
BACKGROUND: Leg stereotypy syndrome (LSS) is a very common, yet underrecognized condition. The pathophysiology of the condition is not well understood. OBJECTIVE: To evaluate and describe the visual kinematic characteristics of the repetitive leg movements in individuals with LSS. METHODS: In this study, we identified and videotaped individuals diagnosed with LSS at the Parkinson's Disease Center and Movement Disorders Clinic, Baylor College of Medicine, Houston, Texas between 2000 and 2023. Only patients with LSS and without any co-morbidities were included in the study. Their medical records were carefully reviewed, and the demographic and clinical data were entered into a database. Video recordings of the repetitive leg movements were then analyzed using TremAn software. RESULTS: We identified 14 individuals with LSS who were videotaped at our center. The videos of the 5 cases were too brief and therefore not suitable for TremAn quantitative analysis. The remaining 9 individuals exhibited regular rhythmic oscillations of the legs. Among these, two individuals displayed rhythmic movements only in video segments where their legs were in crossed positions. The other 7 individuals had regular rhythmic oscillations, always with the toes resting on the floor with the heels raised. Frequency analysis showed values between 4.5 and 6.5 Hz, fairly consistent with a variance below 0.5 Hz in individual cases. The oscillation frequency changed from 5.7 Hz to 2.7 Hz while standing. CONCLUSION: In this study, 6 of 9 individuals with LSS showed 4.5-6.5 Hz regular rhythmic leg movements. Studies involving a larger LSS population with additional electrophysiological evaluations are needed to obtain further insights into this common movement disorder.
- MeSH
- Video Recording MeSH
- Leg * physiopathology MeSH
- Biomechanical Phenomena physiology MeSH
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Stereotypic Movement Disorder * physiopathology diagnosis MeSH
- Aged MeSH
- Check Tag
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
Úvod: Metod provedení uretrovezikální anastomózy při roboticky asistované radikální prostatektomii je celá řada, přičemž neexistují data z prospektivních randomizovaných studií preferovat jednu konkrétní techniku. Cílem videa je prezentovat techniku užívanou na pracovišti hlavního autora práce. Popis metodiky: V Trendelenburgově poloze je provedena trans- či extraperitoneální antegrádní radikální prostatektomie robotickým systémem DaVinci Xi s optikou 30° – prostata je oddělena od hrdla močového měchýře a dorzálně od nervově cévních svazků. Operaci na videu provádí pravák. Video začíná přerušením Santorinského plexu a uretry v jejích 5/6 obvodu nůžkami, vlevo dorzálně je uretra ponechána, aby nedošlo k její retrakci kaudálně do pánevního dna. Krvácející Santorinský plexus je obšit pokračovacím samokotvícím stehem Stratafix® Monocryl 3-0 a vlákno pro další použití ponecháno v dutině břišní fixované jehlou k přední stěně břišní. Na neretrahovanou uretru je na č. 5 naložen druhý identický steh. Pomocí stříhacího jehelce (Larger SutureCut needle driver) je dopřerušena uretra. Následuje uretrovezikální anastomóza bez podpůrné rekonstrukce m. levator ani. Jsou provedeny tři otáčky bez napětí na č. 5–8 a teprve poté je steh postupně dotažen. Je dokončena anastomóza na č. 8–12, ventrálně je k uretře do stehu zavzat i pahýl Santorinského plexu. Anastomóza je došita zbytkem prvního stehu od č. 5 směrem ventrálním až na č. 12. Jehly obou stehů jsou odstřiženy a oba konce samokotvících stehů ještě svázány. Komentář k technice: Metodika je používána přes 10 let u více než 2 000 případů s uspokojivými funkčními výsledky, v kvalitní studii však výsledky zpracované nejsou. Zadní rekonstrukci rutinně neprovádíme, je to dáno i historicky, kdy ani u otevřených výkonů jsme to neprováděli a neměli jsme častější komplikace stran kontinence moči. Zadní podpůrnou rekonstrukci provádíme pouze zcela výjimečně, kdy je po odstranění prostaty velký distanční defekt a v tomto případě je naším záměrem redukce napětí následně prováděné anastomózy. Vlastní přerušení uretry u apexu prostaty provádíme se snahou o maximální zachování puboprostatických ligament, hlavně jejich distálních vláken, které jdou i do venkovního svazku. Následným zavzetím této oblasti do sutury provádíme určitou rekonstrukci závěsného aparátu do hrdla močového měchýře a nedochází k poklesu této oblasti. Tuto přední–horní rekonstrukci pokládáme za fyziologičtější, než provádět rutinně zadní podpůrnou rekonstrukci. Naše funkční výsledky, včetně ekonomických aspektů nás nenutí měnit naši strategii používanou již více jak 10 let. Závěr: Video prezentuje jednu z možných variant uretrovezikální anastomózy při roboticky asistované radikální prostatektomii.
Introduction: There are many methods of performing a urethrovesical anastomosis during robot assisted radical prostatectomy, while there are no data from prospective randomized studies to prefer one specific technique. The aim of this video is to present the technique used at the workplace of the main author of this work. Methodology description: A trans- or extraperitoneal antegrade radical prostatectomy is performed in the Trendelenburg position with the DaVinci Xi robotic system - the prostate is separated from the bladder neck and dorsally from the neurovascular bundles. The operation in the video is performed by a right-handed surgeon. The video begins by cutting the Santorini plexus and the urethra in its 5/6 circumference with scissors, the urethra is left dorsally to prevent its retraction caudally into the pelvic floor. The bleeding Santorini plexus is sutured with a Stratafix® Monocryl 3-0 continuation self-anchoring suture, and the thread is left in the abdominal cavity fixed with a needle to the anterior abdominal wall for further use. A second identical suture is placed on the non-retracted urethra at no. 5. Using a cutting needle (Larger SutureCut needle driver) the urethra is interrupted. This is followed by a urethrovesical anastomosis without supporting reconstruction of the levator ani muscle. Three thread turns are made without tension on No. 5-8 and only then the stitch is gradually tightened. The anastomosis at No. 8-12 is completed, and the stump of the Santorini plexus is sutured ventral to the urethra. The anastomosis is closed with the remainder of the first suture from No. 5 in the ventral direction to No. 12. The needles of both sutures are cut and both ends of the self-anchoring sutures are still tied. Comment on the technique: The methodology has been used for over 10 years in more than 2,000 cases with satisfactory functional results, but the results have not been analysed in a high quality study. We do not routinely perform posterior reconstruction, this is also a given historically, when we did not perform it even in open procedures and we did not have more frequent complications of urinary continence. We perform posterior supportive reconstruction only very exceptionally when there is a large spacer defect after removal of the prostate, and in this case our intention is to reduce the tension of the subsequent anastomosis. We perform the actual interruption of the urethra at the apex of the prostate with an effort to preserve the puboprostatic ligaments as much as possible, especially their distal fibres, which also go into the external bundle. By subsequently taking this area into a suture, we carry out a certain reconstruction of the suspension apparatus in the neck of the bladder and there is no decrease in this area. We consider this front-upper reconstruction to be more physiological than performing a routine posterior support reconstruction. Our functional results, including economic aspects, have not forced us to change our strategy for more than 10 years. Conclusion: The video presents one of the possible variants of urethrovesical anastomosis during robotic-assisted radical prostatectomy.
- Keywords
- uretrovesical anastomosis,
- MeSH
- Video Recording MeSH
- Humans MeSH
- Prostatectomy methods MeSH
- Robotic Surgical Procedures classification methods MeSH
- Transurethral Resection of Prostate * methods MeSH
- Check Tag
- Humans MeSH
- Male MeSH
- Publication type
- Research Support, Non-U.S. Gov't MeSH
Voice registers are assumed to be related to different laryngeal adjustments, but objective evidence has been insufficient. While chest register is usually associated with the lower pitch range, and head register with the higher pitch range, here we investigated a professional singer who claimed an ability to produce both these registers at every pitch, throughout her entire singing range. The singer performed separated phonations alternating between the two registers (further called chest-like and head-like) at all pitches from C3 (131 Hz) to C6 (1047 Hz). We monitored the vocal fold vibrations using high-speed video endoscopy and electroglottography. The microphone sound was recorded and used for blind listening tests performed by the three authors (insiders) and by six "naive" participants (outsiders). The outsiders correctly identified the registers in 64% of the cases, and the insiders in 89% of the cases. Objective analysis revealed larger closed quotient and vertical phase differences for the chest-like register within the lower range below G4 (<392 Hz), and also a larger closed quotient at the membranous glottis within the higher range above Bb4 (>466 Hz), but not between Ab4-A4 (415-440 Hz). The normalized amplitude quotient was consistently lower in the chest-like register throughout the entire range. The results indicate that that the singer employed subtle laryngeal control mechanisms for the chest-like and head-like phonations on top of the traditionally recognized low-pitched chest and high-pitched head register phenomena. Across all pitches, the chest-like register was produced with more rapid glottal closure that was usually, but not necessarily, accompanied also by stronger adduction of membranous glottis. These register changes were not always easily perceivable by listeners, however.
- MeSH
- Acoustics * MeSH
- Video Recording MeSH
- Biomechanical Phenomena MeSH
- Adult MeSH
- Electrodiagnosis MeSH
- Phonation * MeSH
- Vocal Cords physiology MeSH
- Voice Quality * MeSH
- Laryngoscopy MeSH
- Larynx physiology MeSH
- Humans MeSH
- Vibration MeSH
- Singing * MeSH
- Sound Spectrography MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Case Reports MeSH
