Torticollis Research Articles

Upper body posture changes during sitting in female office workers with lower crossed syndrome

Background/Objective: Office workers are exposed to high levels of sedentary time. This sedentary time may have impacts on office workers which affect the normal movement patterns of sitting position caused by muscle tightness and weakness. The aims of this study were to investigate postural changes in lower crossed syndrome (LCS) on a head tilt angle (HTA), craniovertebral angle (CVA), sagittal shoulder angle (SSA), and trunk flexion angle (TFA) during 30 min sitting in female office workers. Methods: Fifty-four office workers who use computer for at least 4 h/day, work for at least 5 years were recruited. All subjects were evaluated their posture, muscle length and power and assigned into three groups: healty group ([Formula: see text]), LCS type A ([Formula: see text]), and LCS type B ([Formula: see text]). Testing posture was 30[Formula: see text]min sitting at computer workstation and typing on standardized with video record. Then three pictures were captured at four points of time from VDO records. All angles were measured two-way mixed ANOVA and post-hoc Tukey test was used to analyse the data. Results: Subjects with LCS type B have less CVA, SSA, and TFA than healthy and participants with LCS type A significantly during sitting at 0, 10, 20 and 30[Formula: see text]min. There was no significant difference in HTA among the three groups. Conclusion: Subjects with LCS type B showed significant the upper body posture changes compared with other groups.

AI, BlazePod Sensors, and Head Vests Implemented in Assessments on Reaction Time and Gaze Training Program in U10 Football Game

In the context of the development of technologies, every sports club tends to improve its training methods to obtain the best possible results in sports training. The goal of the research is to develop a specialized training program designed to enhance ball-control skills so that children can play soccer with increased confidence, therefore reinforcing their need for constant visual contact with the ball during possession. The study participants are children between the ages of 8 and 10, who have acquired at least one year of consistent and well-structured football practice, divided into two groups, experimental group I and control group II. The T-Blaze test training, the Adams test, and the registration of the degree of head tilt using artificial intelligence and visual recognition were implemented. During the training, the authors used the BlazePod sensors to measure participants’ times more precisely, thus avoiding the inaccuracy of using a classic timer. At the same time, the authors used the Vesta HeadUp to block the child’s view of the ball when he has possession of the ball or is very close to it. The recording of time spent playing head-up and head-down revealed statistically significant differences between the three test sessions in favor of the experimental group. Considering the statistically substantial influence obtained, the authors can conclude that our intervention program based on specific means and using HeadUp vests was a decisive factor in achieving improved performance.

Clinical characteristics of peripapillary hyperreflective ovoid mass-like structures in myopic children.

To describe the characteristics of peripapillary hyperreflective ovoid mass-like structure (PHOMS) in myopic children and to investigate factors associated with PHOMS. This retrospective observational study included 101 eyes of 101 children (age ≤17y) with myopia. All included patients underwent comprehensive clinical examination. Optic nerve canal parameters, including disc diameter, optic nerve head (ONH) tilt angle, and border tissue angle were measured using serial enhanced-depth imaging spectral-domain optical coherence tomography (EDI-OCT). Based on the optic disc drusen consortium's definition of PHOMS, eyes were classified as PHOMS group and non-PHOMS group. PHOMS was categorized according to height. Sixty-seven (66.3%) eyes were found with PHOMS. Small PHOMS could only be detected by optical coherence tomography (OCT). Medium PHOMS could be seen with blurred optic disc borders corresponding to OCT. The most frequent location of PHOMS was at the nasosuperior (91%, 61 of 67 eyes) to ONH disc. The axial length and spherical equivalent were more myopic in the PHOMS group than in the non-PHOMS group (both P<0.001). ONH tilt angle was also significantly greater in PHOMS group than in non-PHOMS group [8.90 (7.16-10.54) vs 3.93 (3.09-5.25), P<0.001]. Border tissue angle was significantly smaller in PHOMS group than in non-PHOMS group [29.70 (20.90-43.81) vs 45.62 (35.18-60.45), P<0.001]. In the multivariable analysis, spherical equivalent (OR=3.246, 95%CI=1.209-8.718, P=0.019) and ONH tilt angle (OR=3.275, 95%CI=1.422-7.542, P=0.005) were significantly correlated with PHOMS. There was no disc diameter associated with PHOMS. In the linear regression analysis, border tissue angle was negatively associated with PHOMS height (β=-2.227, P<0.001). PHOMS is associated with optic disc tilt and optic disc nasal shift in myopia. Disc diameter is not a risk factor for PHOMS. The changes in ONH caused by axial elongation facilitated an understanding of the mechanism of PHOMS.

ASSESSMENT OF EYE DROP INSTALLATION TECHNIQUE AMONG PATIENTS ATTENDING OUTPATIENT CLINIC AT PT. JLNGMC, CHAMBA

Objective: A good eye drops installation technique and its knowledge is vital for curing eye ailments and preventing eye from harmful effects of over-dose and under-dose of drugs. The current study assessed the eye drop installation technique and corrected it by imparting them education regarding the same. Methods: A total of 120 patients were enrolled in the cross-sectional study using consecutive sampling technique till the sample size was achieved in a tertiary care hospital. The participants were observed by the trained observers for their steps of technique for installing eye drops and the errors were noted which were corrected by the observers and followed up till 3 visits to observe a change in the steps of technique. Results: The mean age of study participants was 41.44±15.4 y. Majority of them were in the age group 18-30 y (35%), females (55.8%), and belonging to upper middle socio-economic status (31.7%). Majority of study participants had 6/6 VA in right eye (65%) and left eye (61.7%). “Drop land on first attempt” and “direct bottle towards eyes” showed maximum improvement of 45.8% each followed by “tilt head while putting” showed 45 % improvement between 1st visit and 3rd visit. “Trouble putting drops” showed least improvement by 20% between 1st and 3rd visit. All the favorable ophthalmic practices showed a statically significant (&lt;0.05) increase in their proportion in each visit. Conclusion: A high prevalence of errors while installing eye drops among participants were observed which were improved by educating them about right steps, as observe in follow up visits.

Long-term visual outcomes in spasmus nutans

BackgroundThe long-term visual outcomes in spasmus nutans patients is largely unknown. The purpose of this study was to characterize visual outcomes and identify comorbid ophthalmic conditions in patients with spasmus nutans.MethodsWe retrospectively reviewed the charts of consecutive patients diagnosed with spasmus nutans between 2000 and 2020. Demographic information, ophthalmic characteristics, and neuroimaging results were assessed over time.ResultsOf the 32 patients included in the study, 13 (41%) were female. Underlying medical conditions included a diagnosis of Trisomy 21 in 6 (19%) and prematurity in 8 (25%). Twenty-one patients (66%) self-reported as a race other than Caucasian. 18 patients (56%) had non-private health insurance and 1 (3%) was uninsured. Mean age at diagnosis and resolution were 16 months (range 45 months) and 48 months (range 114 months), respectively. All 32 patients had nystagmus, 31 (97%) had head nodding and 16 (50%) had ocular torticollis. Mean follow-up was 66 months (range 185 months). On initial presentation, 6/32 (19%) had an amblyogenic refractive error and mean best-corrected visual acuity (BCVA) in the better-seeing eye was 0.78 Logarithm of the Minimum Angle of Resolution (LogMAR) (range 1.24). In a sub-analysis that included patients with > 1 exam (n = 23), 17/20 (85%) had an amblyogenic refractive error and mean BCVA in the better-seeing eye was 0.48 LogMAR (range 1.70). At the final exam, 12 patients had measurable stereopsis, eight had strabismus, and three had undergone strabismus surgery. Eight patients required treatment for amblyopia.ConclusionsWe found a high prevalence of amblyogenic refractive error, strabismus and amblyopia among patients with spasmus nutans. Children with spasmus nutans benefit from ongoing ophthalmic follow-up until they are past the amblyopic age range, even after resolution of nystagmus.

Otitis media/interna and encephalitozoonosis are the most common causes of head tilt in pet rabbits in the UK: 73 cases (2009‒2020).

There are limited studies that identify diseases associated with head tilt in pet rabbits. This was an observational, retrospective, single-centre study of rabbits with head tilt presented between 2009 and 2020. Descriptive statistics were performed for all cases, whereas univariate and multivariate analyses were only performed for the 36 cases with a final diagnosis. Seventy-three rabbits met the inclusion criteria. The final diagnoses included Encephalitozoon cuniculi meningoencephalomyelitis (EC) (15/36; 41.7%), otitis media/interna (OMI) (8/36; 22.2%) and concurrent EC and OMI (13/38; 36.1%). Subacute-to-chronic onset was more common in rabbits with OMI than in those with EC (p = 0.018). Previous middle ear surgery (p = 0.046) and a diagnosis of otitis externa (p = 0.004) significantly increased the risk of OMI. Meloxicam was associated with improvement of clinical signs(p = 0.007). Upright ears (p = 0.013), recumbency (p = 0.037) and impaired mentation (p = 0.001) were associated with a higher risk of death/euthanasia. The proportions of residual head tilt (66.7%) and relapse of vestibular signs (42.1%) were high. This was a retrospective study with cases varying in their investigation and conclusive final diagnoses. OMI and EC were the most common aetiologies of head tilt in pet rabbits in the UK. Meloxicam might be associated with a favourable outcome in affected rabbits. Paired EC serology and a CT scan of the head should be the baseline investigation for head tilt in rabbits.

Meningoencephalitic Listeriosis in Iranian Sheep and Goats

Background: Meningoencephalitic listeriosis is a significant disease affecting goats and sheep, with potential implications for public health. This study aimed to investigate and report the occurrence, clinical manifestation, laboratory findings, and further understanding of neurolisteriosis in the goat and sheep populations in Tehran, Qazvin, and Kurdistan provinces of Iran. Methods: From 2018 to 2021, a program was implemented to monitor multiple flocks for meningoencephalitic listeriosis. Clinical manifestations of animals that showed suspected neurological signs of listeriosis (19 animals) were recorded, and necropsies were performed. Sampling of the brain tissue of infected animals was done. The specimens underwent a 'cold-enrichment' procedure, and subsequent culture and biochemical tests were conducted to confirm the presence of Listeria monocytogenes. Results: According to the clinical and bacteriological findings, 19 animals were diagnosed with neurolisteriosis. The affected animals exhibited various signs of the disease, including head deviation, head tilt, head pressing, mouthfuls, walking in circles, drooping of the ear, and unilateral hypalgesia. L. monocytogenes was isolated from brain samples of 11 animals. Conclusion: The study revealed potential indications of meningoencephalitic listeriosis in certain breeds of goats and sheep. Recognizing these typical signs can contribute to early detection, diagnosis, and proper management of listeriosis cases, improving welfare and health outcomes for affected animals. The results underscore the importance of strengthened disease surveillance, prevention, and control strategies.

Clinical study on the incidence of femoral head posterior tilt angle in non-displaced femoral neck fractures

To investigate the occurrence of posterior femoral head tilt after clinical non-displaced femoral neck fracture, and to provide a reference basis for clinical surgery and improvement of disease prognosis. Total of 165 patients with non-displaced femoral neck fractures of Garden typeⅠandⅡfrom January 2018 to June 2022 were selected as study subjects including 48 males and 117 females, with an average age of (71.5±8.5) years old ranging from 53 to 89, involving 97 cases of typeⅠand 68 of typeⅡ. On the patient's preoperative sagittal or axial CT film of the hip, the angle formed by the radius line of the femoral head and the midline of the femoral neck was used as the posterior tilt angle of the femoral head (α), and the posterior tilt femoral head angle was measured using the method proposed by Palm. The measured data were divided into 6 groups:α<0°, 0°<α< 5°, 5°≤α<10°, 10°≤α<15°, 15°≤α<20°, α≥20°, and the incidence of different ranges of posterior tilt angle was compared. The sex composition ratio of 165 patients were analyzed and compared, and the age of 65 was used as the cut-off point to compare the incidence of fractures between genders. Patients were divided into the posterior tilt <20° group for 135 cases and the posterior tilt ≥20°group for 30 cases according to the preoperative posterior tilt angle, the differences between two groups in terms of gender and age were analyzed. Among 165 patients with non-displaced femoral neck fractures, 143 cases with poaterior tilt of the femoral head occurred with an incidence of 86.7%. Posterior tilt 0°<α<5° accounted for 36 cases with an incidence of 21.8%;5°≤α<10° accounted for 40 cases with an incidence of 24.2%;10°≤α<15° accounted for 27 cases with an incidence of 16.4%;15°≤α<20° accounted for 10 cases with an incidence of 6.1%;posterior tilt angle α≥20° accounted for 30 cases, the incidence was 18.2%, of which the maximum posterior tilt angle was 42.7°. Statistical analysis showed that the percentage of fractures in the 165 patients selected for this study was significantly higher in female than in male, and that the female group was more likely to have fractures before the age of 65 years compared to the male group. However, gender, age and fracture subtypes (GardenⅠ, Ⅱ) were not influential factors for femoral neck fractures with a preoperative posterior femoral head tilt angle >20°(P>0.05). The incidence of femoral head posterior tile in non-displaced femoral neck fractures is relatively high, in which severe posterior tile occurs, and the femoral head posterior tile angle≥20° can reach 18.2%. In patients with closed reduction internal fixation, the fracture end needs to be repositioned as much as possible to reduce the risk of postoperative avascular necrosis of the femoral head. In order to prevent femoral neck fractures, special attention should be paid to anti-osteoporosis treatment for female. Preoperative assessment of posterior tilt is critical for patients of different ages, genders and fracture subtypes (GardenⅠ, Ⅱ).

Imaging diagnosis: Disseminated hemangiosarcoma in a Welsh pony.

A 16-year-old pony gelding presented with epistaxis and a head tilt. Referral skull radiographs suggested an ethmoid hematoma. Concurrent neurologic abnormalities prompted contrast-enhanced CT of the head and cranial neck, revealing numerous hyperattenuating masses throughout the brain and paranasal sinuses, along with a large osteolytic mass in the second cervical vertebra. The vertebral mass extended into the vertebral canal, causing focal extradural compressive myelopathy. These findings were inconsistent with ethmoid hematoma and metastatic hemangiosarcoma or malignant melanoma were prioritized as potential causes for the clinical signs. Postmortem examination confirmed the sinonasal, intracranial, and vertebral masses as hemangiosarcoma, and additionally revealed innumerable thoracoabdominal metastatic lesions and hemorrhagic foci. A final diagnosis of disseminated hemangiosarcoma was made. In this study, CT proved invaluable for evaluating the severity and characterizing regional disease and neural involvement, directly affecting case management decisions.

Ефективність впровадження програми корекційно-профілактичних заходів для офісних працівників з різним станом біомеханіки опорно-рухового апарату

Topicality. Today's challenges require further improvement of technologies for correcting the motor activity of office workers through the use of a wide range of health fitness tools, which are gaining more and more popularity at the current stage. Goal. To determine the effectiveness of implementing a program of corrective and preventive measures for men aged 36–45 who work in offices at a computer. Research Methods: comparative analysis of the angular characteristics of the biogeometric profile of men's posture and indicators of their physical fitness before and after the study. The Results of the conducted research proved the effectiveness of corrective and preventive classes in terms of the positive impact on indicators of body goniometry and physical fitness of men in the second period of maturity with a round back. Thus, in men aged 36–45, the head tilt angle (a1) increased statistically significantly (T=0; Z=3,516; p=0,0004) by 10,5 %, a statistically significant (T=0; Z=3,516; p=0,0004) increase in the visual angle (a2) by 1,60 % was also recorded, and the angle of inclination of the trunk (a3) decreased statistically significantly (T=1,5; Z=3,439; p=0,0006) by 20,0 %. Recorded: statistically significant (T=0; Z=3,516; p=0,0004) increase in upper limb strength by 40 %, statistically significant (T=0; Z=3,296; p=0,00104) increase in speed-power index abilities by 66,67 %, a statistically significant (T=0; Z=3,516; p=0,0004) increase in the flexibility index by 62,5 %, and the shoulder girdle strength index is statistically significant (T=0; Z=3,516; p =0,0004) increased by only 7,55 %. Conclusion. According to the results of the comparative analysis, it was found that in both subgroups of men, angle α1 and angle α2 increased statistically significantly (p&lt;0,05), and angle α3 decreased statistically significantly (p&lt;0,05), while in men 36–40 years, the angle α1 and angle α2 increased more rapidly. The comparative analysis of physical fitness indicators before and after the study made it possible to state a statistically significant (p&lt;0,05) improvement in both men 36–40 and men 41–45 years old. Thus, the conducted research confirmed the effectiveness of our proposed program.

Objective Evaluation of Motion Cueing Algorithms for Vehicle Driving Simulator Based on Criteria Importance through Intercriteria Correlation (CRITIC) Weight Method Combined with Gray Correlation Analysis

Perception-based fidelity evaluation metrics are crucial in driving simulators, as they play a key role in the automatic tuning, assessment, and comparison of motion cueing algorithms. Nevertheless, there is presently no unified and effective evaluation framework for these algorithms. To tackle this challenge, our study initially establishes a model rooted in visual–vestibular interaction and head tilt angle perception systems. We then employ metrics like the Normalized Average Absolute Difference (NAAD), Normalized Pearson Correlation (NPC), and Estimated Delay (ED) to devise an evaluation index system. Furthermore, we use a combined approach incorporating CRITIC and gray relational analysis to ascertain the weights of these indicators. This allows us to consolidate them into a comprehensive evaluation metric that reflects the overall fidelity of motion cueing algorithms. Subjective evaluation experiments validate the reasonableness and efficacy of our proposed Perception Fidelity Evaluation (PFE) method.

Post-Traumatic Central or Axial Atlantoaxial Dislocation Presenting with “Atypical” Symptoms—Analyzing the Role of Dynamic Imaging on the Basis of Experience with 14 Patients Treated by Atlantoaxial Fixation surgery

This is a report of a series of 14 patients who presented with a range of "atypical" cranial, spinal, and systemic symptoms that started after they suffered a relatively severe injury to the head and/or neck several months or years before surgical treatment. The implications of diagnosing and treating central or axial atlantoaxial dislocation (CAAD) is discussed. Also, the role of dynamic rotatory and lateral head tilt imaging in the diagnosis and treatment is analyzed. Of the 14 patients, 7 were men and 7 were women, with an age range of 21-64 years (average, 42 years). Due to the severity of the presenting neurological and non-neurological symptoms, all the patients had lost their occupation and were heavily dependent on painkillers and/or antidepressant drugs. In addition to other characteristic clinical and radiological evidence, CAAD was diagnosed made based on the facetalignments on lateral profile imaging in the neutral head position. Dynamic head flexion-extension, lateral head tilt, and neck rotation imaging findings confirmed and subclassified CAAD. All 14 patients underwent atlantoaxial fixation surgery. A personalized self-assessment clinical scoring parameter and the World Health Organization Disability Assessment Schedule 2.0 was used to evaluate the outcome. One patient did not follow-up after surgery. At a minimum follow-up of 6 months after atlantoaxial fixation surgery, the remaining 13 patients experienced relief from all major symptoms. Diagnosing and treating CAAD can have major therapeutic implications for patients presenting with progressively worsening disabling clinical symptoms following relatively severe head and/or neck trauma.

A mechanical device for precise self-administration of ocular drugs

Individuals with glaucoma are routinely prescribed and required to self-administer eye drop-based medication multiple times a day. Unfortunately, the process of self-administering eye drops requires a level of dexterity, strength, and visual acuity that the elderly population often do not possess, resulting in poor adherence and worsening condition. In this paper, we detail a prototyped eye drop assist device designed to safely and reliably deliver prescription medications. The ergonomic device safely anchors the eye drop bottle tip an optimal distance away from the face, aligns to the pupil, and provides feedback to the user when their head is at an appropriate tilt for a successful eye drop administration. We experimentally verify that the device improves hand steadiness, provides accurate head tilt feedback, precisely positions the bottle tip, and predictably delivers eye drops into the eye according to a parameterized model.

Assessments of Subjective Visual Gravity and Spontaneous Nystagmus in Patients With Vestibular Neuritis.

This study aimed to assess the correlation between the spontaneous nystagmus (SN) and the subjective visual vertical/horizontal (SVV/SVH) among patients with vestibular neuritis (VN) at the different head positions. Case-control study. Affiliated Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine. This study evaluated the SVV/SVH in both healthy subjects and patients with VN. These evaluations were performed in 5different head positions: upright, 45° tilt to the left, 90° tilt to the left, 45° tilt to the right, and 90° tilt to the right. Additionally, the intensity of SN, as measured by slow-phase velocity, was recorded. In patients with VN, a significant correlation was observed between SN and SVV/SVH in an upright position. The intensity of SN was higher when the head was tilted 90° towardthe affected side compared to other positions. The SVV/SVH displayed an ipsiversive shift, when the head was tilted towardboth the lesion and unaffected sides, exhibiting a contraversive direction. Furthermore, the changes in position-induced SN were consistent with the displacements of SVV and SVH caused by head tilt. The presence of SN in patients with VN was observed to vary across different head position. These variations could potentially be attributed to the diverse activation patterns of the mechanical properties of otolith organs that are induced by head tilts.

Boergen modification of Harada-ito surgery with and without vertical muscle surgery for acquired unilateral superior oblique muscle palsy.

The purpose is to report the results of the Boergen modification of the Harada-Ito procedure with and without simultaneous vertical muscle surgery in patients with acquired unilateral superior oblique muscle palsy. Files of patients with acquired unilateral superior oblique muscle palsy who were treated with Boergen modification of the Harada-Ito procedure were studied retrospectively. For each patient, age at the time of surgery, the presence of diplopia, compensatory head posture, and ocular deviation before and after surgery were retrieved. Results were evaluated 6 months after surgery. A total of 12 patients with a mean age of 32 years at the time of surgery (range 15-45 years) were included. The underlying etiology was head trauma in eleven patients. The modified Harada-Ito procedure alone was done for three cases (Group 1), and a simultaneous combination of this procedure and vertical muscle surgery was performed in nine patients (Group 2). The average intorsional effect in the primary position was 9.2° (8° in Group 1 and 9.6° in Group 2). The average correction of hypertropia in the primary position was 8.2 prism diopters (PD) (1 PD in Group 1 and 10.6 PD in Group 2). Diplopia in the primary position and downgaze were resolved in eleven patients and ten patients, respectively. Four patients had a compensatory head tilt at their last follow-up. Boergen modification of the Harada-Ito procedure, alone and combined with vertical muscle surgery, successfully corrected primary position diplopia in the majority of the patients.

HEART RATE VARIABILITY BASED DRIVER DROWSINESS DETECTION

Driver drowsiness may cause traffic injuries and death. Various methods have been given to detect drowsiness, for instance, image-based biometric-signals-based. In this project, a new approach using heart rate and head tilt is discussed. The aim of the project is to provide a device with simple components that enables the driver to save his life by avoiding accidents caused by frequent sleepiness by giving a sound alert (alarm), which forces the driver to wake up and regain control of the car This device is not considered a treatment for the problem of sleep, but rather a preventive tool from accidents daily the project was designed with simple components, the most important of which are (ECG sensor and acceleration sensor Arduino, alarm device). ECG sensor: it used to give an ECG signal to Arduino to analysis it. ADXL335 sensor: it is placed behind the driver's head. This sensor senses the fall of the driver's head when he sleeps. It was added to sense better.

Design and Fabrication of Head Tilt Controlled Wheelchair for Disabled

Abstract: The quantity of crippled people is expanding consistently. Versatility helps are valuable for patients for transportation and are situation for strolling particularly in indoor and outside climate. Moving the patients from wheelchair to cot or to the clinical bed is generally an issue for the chaperon or assistant. Understanding the different issues with respect to the versatility gear and presenting a superior plan will be a resource for the clinical field and assistance for impaired people. There is a requirement for a wheelchair cum cot to work with the debilitated patient's portability and to give an original clinical hardware to use in the Indian emergency clinics. Here we are fostering a framework which is equipped for moving different positions (Seat, Semi-Seat and Cot) physically. T

Disease spectrum of torticollis in children and diagnostic flowchart: A retrospective, single-centre study.

To describe the disease spectrum of torticollis in Chinese children and to improve its diagnostic flowchart. A retrospective analysis was conducted at the Rehabilitation Department of Beijing Children's Hospital from 2017 to 2021. Patients were diagnosed and referred based on a diagnostic flowchart of torticollis. Detailed patient data were collected from the outpatient electronic medical record system. A total of 2047 patients met the inclusion criteria. The top five conditions were congenital muscular torticollis (CMT) (76.6%), cerebral palsy (5.1%), ocular torticollis (4.7%), brachial plexus injury (1.9%) and atlantoaxial rotary subluxation (1.3%). CMT was most common in 0-2 year olds, cerebral palsy in 3-5 year olds, and atlantoaxial rotary subluxation in 7-12 year olds. The top five referral departments were orthopaedics, ophthalmology, otolaryngology, head and neck surgery, neurology and neurosurgery. The disease spectrum of torticollis in children and the diagnostic flowchart provide important references for diagnosing torticollis, which necessitates multidisciplinary collaboration.

An experimentally informed computational model of neurovestibular adaptation to altered gravity.

Transitions to altered gravity environments result in acute sensorimotor impairment for astronauts, leading to serious mission and safety risks in the crucial first moments in a new setting. Our understanding of the time course and severity of impairment in the early stages of adaptation remains limited and confounded by unmonitored head movements, which are likely to impact the rate of adaptation. Here, we aimed to address this gap by using a human centrifuge to simulate the first hour of hypergravity (1.5g) exposure and the subsequent 1g readaptation period, with precisely controlled head tilt activity. We quantified head tilt overestimation via subjective visual vertical and found ∼30% tilt overestimation that did not decrease over the course of 1h of exposure to the simulated gravity environment. These findings extended the floor of the vestibular adaptation window (with controlled vestibular cueing) to 1h of exposure to altered gravity. We then used the empirical data to inform a computational model of neurovestibular adaptation to changes in the magnitude of gravity, which can offer insight into the adaptation process and, with further tuning, can be used to predict the temporal dynamics of vestibular-mediated misperceptions in altered gravity.

Development of hardware and algorithms for the wearable monitoring device for the motor activity of the human cervical spine

The article discusses the theoretical prerequisites for the development of a monitoring system for determining the position, movements and tilts of the human head. Purpose of the study: development of hardware and algorithms for the specified system. Results. A three-point model has been developed that takes into account the structural and motor characteristics of the cervical spine. The choice of reference points for installing sensors is justified. Options for moving these sensors for different positions of the human head are shown. The static and dynamic indicators necessary to assess the movements of the cervical spine are described. The developed system is described – a hardware and software complex for monitoring the position, movements and tilts of the human head, a block diagram and the electronic components used are presented. The prospects for further development and application of the developed system are considered. Discussion. The system being developed will become the basis for creating a medical complex that will provide diagnoses related to the violation of the morphological and functional relationship of the blood circulation and the osseous-ligamentous apparatus, support decision-making by the doctor and the possibility of its correction by means of biocontrol.