Head roll

OBJECTIVE: We examined whether active head aiming with a Helmet Mounted Display (HMD) can draw the pilot's attention away from a primary flight task. Furthermore, we examined whether visual clutter increases this effect. BACKGROUND: Head up display symbology can result in attentional tunneling, and clutter makes it difficult to identify objects. METHOD: Eighteen military pilots had to simultaneously perform an attitude control task while flying in clouds and a head aiming task in a fixed-base flight simulator...

OBJECTIVES: Robotic-assisted thoracic surgery is increasingly used in our specialty. We surveyed European Society of Thoracic Surgeons membership with the objective to determine current status of robotic thoracic surgery practice including training perspectives. METHODS: A survey of 17 questions was rolled out with 1 surgeon per unit responses considered as acceptable. RESULTS: 174 responses were obtained; 56% (97) were board certified thoracic surgeons; 28% (49) were unit heads...

BACKGROUND: Upright quiet stance is maintained through the complex integration of sensory information from the visual, vestibular, and somatosensory systems [1]. Virtual reality (VR) is a well-established tool that has been used to study sensory contributions to balance and induce visual perturbations. Previous assessments of virtual environments have suggested that VR can be used to create various visual stimuli that affect balance [2]; however, there is limited work examining which dynamic visual stimulus, in the form of circular vection (CV), is the most effective at inducing whole body lean...

This study examines a collaborative framework that utilizes an intelligent deep Q-network to regulate the formation of leader-follower Unmanned Aerial Vehicles (UAVs). The aim is to tackle the challenges posed by the highly dynamic and uncertain flight environment of UAVs. In the context of UAVs, we have developed a dynamic model that captures the collective state of the system. This model encompasses variables like as the relative positions, heading angle, rolling angle, and velocity of different nodes in the formation...

An inertial guidance system based on a fiber optic gyroscope (FOG) is an effective way to guide long-distance curved pipe jacking. However, environmental disturbances such as vibration, electromagnetism, and temperature will cause the FOG signal to generate significant random noise. The random noise will overwhelm the effective signal. Therefore, it is necessary to eliminate the random noise. This study proposes a hybrid de-noising method, namely complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN)-lifting wavelet transform (LWT)...

Icebergs and ice islands (large, tabular icebergs) present a significant hazard to marine vessels and infrastructure at a time when demand for access to Arctic waters is increasing. There is a growing demand for in situ iceberg tracking data to monitor their drift trajectories and improve models used for operational forecasting of ice hazards, yet the high cost of commercial tracking devices often prevents monitoring at optimal spatial and temporal resolutions. Here, we provide a detailed description of the Cryologger Ice Tracking Beacon (ITB), a low-cost, robust, and user-friendly data logger and telemeter for tracking icebergs and ice islands based on the Arduino open-source electronics platform...

AIM: To explore pressure injury prevention practices and evaluate the impact of an educational intervention on PI prevalence before and after an educational intervention. DESIGN: A multi-centre observational study. METHOD: Data were collected at two time points in May 2021 and April 2022 using a Qualtrics® online form. Two Registered Nurses at each site collected observational data at each time point by diagnosing and staging any identified pressure injuries as part of a prevalence study...

Underwater glider (UG) plays an important role in ocean observation and exploration for a more efficient and deeper understanding of complex ocean environment. Timely identifying the motion states of UG is conducive for timely attitude adjustment and detection of potential anomalies, thereby improving the working reliability of UG. Combining limited penetrable visibility graph (LPVG) and graph convolutional networks (GCN) with self-attention mechanisms, we propose a novel method for motion states identification of UG, which is called as visibility graph and self-attention mechanism-based graph convolutional network (VGSA-GCN)...

INTRODUCTION: Benign paroxysmal positional vertigo (BPPV) is a vestibular disease characterized by brief  positional vertigo. When examined, characteristic patterns of positional nystagmus (PN) are found with specific head position changes. Previous studies have shown a high prevalence of PN among vestibular healthy subjects. Considering the current diagnostic criteria of BPPV and the potentially high prevalence of PN in healthy individuals, this raises the question of potential over diagnosing BPPV, if diagnostics are based exclusively upon objective findings...

OBJECTIVE: To describe the clinical-instrumental findings in case of concurrent superior canal dehiscence (SCD) and ipsilateral vestibular schwannoma (VS), aiming to highlight the importance of an extensive instrumental assessment to achieve a correct diagnosis. STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. PATIENTS: Five patients with concurrent SCD and VS. INTERVENTION: Clinical-instrumental assessment and imaging...

INTRODUCTION: The illusions of head motion induced by galvanic vestibular stimulation (GVS) can be used to compromise flight performance of pilots in fixed-base simulators. However, the stimuli used in the majority of studies fail to mimic disorientation in realistic flight because they are independent from the simulated aircraft motion. This study investigated the potential of bilateral-bipolar GVS coupled to aircraft roll in a fixed-base simulator to mimic vestibular spatial disorientation illusions, specifically the "post-roll illusion" observed during flight...

BACKGROUND: Cleft lip and palate, which affects 0.5-1.6 out of every 1000 live births, is the most prevalent congenital defect of the head and neck. Several approaches, including quadrangular flaps, triangular flaps and rotation-advancement procedures, White Roll Vermilion Turn Down Flap (WRV flap) from the lateral lip element were employed by Mishra to modify Millard's technique to create the vermilion and white roll on the medial lip segment. This study aimed to use the anthropometric measurements taken pre- and post-operation to evaluate quantitative assessment of modified Millard technique compared with WRV flap technique in unilateral cleft lip (UCL) repair...

The phenological stage of maturity of grasses and supplementation program can impact forage utilization in grazing beef cattle. However, the potential interaction between harvest maturity of Eragrostis tef (teff) hay and energy supplement source was yet to be fully evaluated. Therefore, our objective was to determine the effects of harvest maturity of teff hay and supplemental energy sources on nutrient intake, apparent total-tract nutrient digestion, nitrogen (N) utilization, and ruminal fermentation characteristics in beef heifers...

Direction-changing positional nystagmus (DCPN), which refers to the change in the direction of nystagmus with different head positions, is a well-known characteristic of horizontal semicircular canal BPPV. The supine head roll test is commonly used to diagnose horizontal canal BPPV. However, persistent geotropic DCPN observed during this test cannot be explained by the conventional explanations of canalolithiasis or cupulolithiasis. To account for this unique nystagmus, the concept of a "light cupula" has been recently introduced...

To improve the measurement accuracy of the three-dimensional rotation angle of a spherical joint, a novel approach is proposed in this study, which combines magnetic detection by a Hall sensor and surface feature identification by an eddy current sensor. Firstly, a permanent magnet is embedded in the ball head of a spherical joint, and Hall sensors are set and distributed in the ball socket to measure the variation in the magnetic flux density when the spherical joint rotates, which are related to the 3D rotation angle...

Vertebral artery dissections are a rare pathology that carries a high risk of stroke in a younger population. They may be caused by minor mechanisms and the index of suspicion should be high. Treatment with anticoagulation or antiplatelets should follow if no surgical management is indicated.We describe a case of a female in her 30s who fell backward off a swing and rolled over her head and complained of continued posterior neck pain. The patient was found to have a vertebral artery dissection on MRI. The patient was then anticoagulated with high-dose apixaban and low-dose aspirin...

INTRODUCTION: Benign paroxysmal positional vertigo (BPPV) is an inner ear disorder with a heterogeneous etiology, often linked to preceding infections, head injuries, or vestibular neuronitis. While it is commonly observed in the elderly, its occurrence in the pediatric population is rare. To our knowledge, there have been no reported cases of BPPV in patients younger than 5 years. CASE PRESENTATION: A 4.5-month-old female infant was admitted with episodes of paroxysmal nystagmus...

These volumes conclude a series initiated in 1974, marking almost fifty years of effort by a huge cohort of scholars. This review is thus a valedictory for the whole series as well as an account of what we have learned from the most recent volumes about Darwin's final years (1879-82). The project was begun by Frederick Burckhardt, who shared the editorial role for the early volumes with Sydney Smith and a rolling sequence of assistant editors and advisers who eventually comprised a significant fraction of the leading members of what used to be called the 'Darwin industry'...

Enhanced recovery after surgery (ERAS) for head and neck oncology patients was first introduced in 2017 and was found to improve patient outcomes, in line with results from other surgical specialties. This article presents a rapid recovery protocol (RRP) to further enhance perioperative care in conjunction with the ERAS protocol, for patients undergoing ablative surgery together with free flap reconstruction and tracheostomy. A prospective multidisciplinary approach was adopted to identify a specific cohort of patients who would benefit from the RRP...

PURPOSE: This study aimed to investigate the vitamin D deficiency of patients with BPPV recurrence and to evaluate the differences of 25-hydroxy vitamin D (25(OH)D) and serum calcium levels among gender and age categories. METHODS: This cross-sectional study enrolled patients with BPPV. The diagnosis of BPPV was based on positional nystagmus and vertigo induced by certain head positions (The Dix-Hallpike maneuver and head roll tests). All patients' age, serum 25(OH)D, calcium measurements and recurrence data were collected and analyzed...