scholarly journals Lessons Learned: Gastric Motility Assessment During Driving Simulation

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3175 ◽  
Author(s):  
Nenad B. Popović ◽  
Nadica Miljković ◽  
Kristina Stojmenova ◽  
Grega Jakus ◽  
Milana Prodanov ◽  
...  
Keyword(s):  
Lessons Learned ◽  
Driving Simulation ◽  
Simulator Sickness ◽  
Driving Simulators ◽  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity ◽  
Testing Environment ◽  
Technological Advances ◽  
Invasive Method ◽  
Transportation Technologies

In the era of technological advances and innovations in transportation technologies, application of driving simulators for the investigation and assessment of the driving process provides a safe and suitable testing environment. Although driving simulators are crucial for further improvements in transportation, it is important to resolve one of their main disadvantages–simulator sickness. Therefore, suitable methods for the assessment of simulator sickness are required. The main aim of this paper was to present a non-invasive method for assessing simulator sickness by recording gastric myoelectrical activity–electrogastrography. Open-source hardware for electrogastrography together with recordings obtained in 13 healthy volunteers is presented, and the main aspects of signal processing for artifact cancellation and feature extraction were discussed. Based on the obtained results, it was concluded that slow-wave electrical gastric activity can be recorded during driving simulation by following adequate recommendations and that proposed features could be beneficial in describing non-ordinary electrogastrography signals.

scholarly journals Use of Electrogastrography in Preclinical Studies of Cholinergic and Anticholinergic Agents in Experimental Pigs

2015 ◽  
pp. S647-S652 ◽  
Author(s):  
J. KVĚTINA ◽  
I. TACHECÍ ◽  
M. PAVLÍK ◽  
M. KOPÁČOVÁ ◽  
S. REJCHRT ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
The Netherlands ◽  
Dominant Frequency ◽  
Preclinical Studies ◽  
Anticholinergic Agents ◽  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity ◽  
Non Invasive ◽  
Invasive Method ◽  
Experimental Pigs

Electrogastrography (EGG) is a non-invasive method for the assessment of gastric myoelectrical activity. Porcine EGG is comparable with human one. The purpose of this study was to evaluate the effect of atropine and neostigmine on the EGG in experimental pigs. Adult female pigs were administrated atropine (1.5 mg i.m., n=6) and neostigmine (0.5 mg i.m., n=6) after the baseline EGG, followed by a 90-min trial recording (MMS, Enschede, the Netherlands). Running spectral analysis was used for the evaluation. The results were expressed as dominant frequency of slow waves and EGG power (areas of amplitudes). Neostigmine increased continuously the dominant frequency and decreased significantly the EGG power. Atropine did not change the dominant frequency significantly. However, atropine increased significantly the EGG power (areas of amplitudes) from basal values to the maximum at the 10-20-min interval. After that period, the areas of amplitudes decreased significantly to the lowest values at the 60-90-min interval. In conclusion, cholinergic and anticholinergic agents affect differently EGG in experimental pigs.

Driving Simulators: Six Years of Hands-On Experience at Hughes Aircraft Company

1993 ◽  
Vol 37 (9) ◽  
pp. 607-611 ◽  
Author(s):  
Cheryl M. Hein
Keyword(s):  
Market Research ◽  
Lessons Learned ◽  
Driving Simulation ◽  
Driving Simulators ◽  
Simulation Tools ◽  
Hands On ◽  
Technical Capability ◽  
Human Factors Research ◽  
Technology Review ◽  
Hughes Aircraft

In 1987 Hughes Aircraft Company launched a fledgling driving simulation laboratory. For six years the facility has been actively used for human factors research, product design and engineering, market research and the development of simulation technology. Review this facility's brief history reveals a concurrent evolution in sophistication of technical capability and applications with some interesting lessons learned regarding the use of driving simulators. The implications for researchers and product developers considering the use of driver-in-the-loop simulation tools are discussed.

Effects of human milk and infant formula on the development of gastric myoelectrical activity in preterm infants

2001 ◽  
Vol 120 (5) ◽  
pp. A265-A265 ◽  
Author(s):  
H OUYANG ◽  
J HAYES ◽  
H ZHU ◽  
J YIN ◽  
E CO ◽  
...  
Keyword(s):  
Human Milk ◽  
Infant Formula ◽  
Preterm Infants ◽  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity

Serosal and cutaneous recordings of gastric myoelectrical activity in patients with gastroparesis

1994 ◽  
Vol 266 (1) ◽  
pp. G90-G98 ◽  
Author(s):  
J. D. Chen ◽  
B. D. Schirmer ◽  
R. W. McCallum
Keyword(s):  
Electrical Stimulation ◽  
Slow Wave ◽  
Test Meal ◽  
Frequency Change ◽  
Fasting State ◽  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity ◽  
Gastric Slow Wave ◽  
Student’S T ◽  
Student’S T Test

The aims of this study were to 1) investigate gastric myoelectrical activity in patients with gastroparesis, 2) validate the cutaneous electrogastrogram (EGG) in tracking the frequency change of the gastric slow wave, and 3) investigate the effect of electrical stimulation on gastric myoelectrical activity. Gastric myoelectrical activity was recorded in 12 patients with documented gastroparesis using serosal electrodes for > 200 min in each subject. All recordings were made at least 4 days after surgery. Each session consisted of a 30-min recording in the fasting state and a 30-min recording after a test meal. The test meal (liquid or mixed) was selected according to patient's tolerance. Electrical stimulation was performed in three subjects via the serosal electrodes at a frequency of 3 cycles/min. Gastric myoelectrical activity was recorded using serosal electrodes in each session. The serosal recording showed slow waves of 2.5 to 4.0 cycles/min in all 12 subjects. Absence of spikes was noted in 11 of the 12 subjects. The simultaneous serosal and cutaneous recording of gastric myoelectrical activity showed that the frequency of the EGG was exactly the same as that of the serosal recording. Liquid meals resulted in a significant decrease in slow-wave frequency (Student's t test, P = 0.006), and the EGG accurately reflected this change. Electrical stimulation had no effect on the frequency of the gastric slow wave and did not induce spikes.(ABSTRACT TRUNCATED AT 250 WORDS)

Foundations of Advanced Neuroanatomy: Technical Guidelines for Specimen Preparation, Dissection, and 3D-Photodocumentation in a Surgical Anatomy Laboratory

2019 ◽  
Author(s):  
Luciano César PC Leonel ◽  
Lucas P. Carlstrom ◽  
Christopher S. Graffeo ◽  
Avital Perry ◽  
Carlos Diogenes Pinheiro-Neto ◽  
...  
Keyword(s):  
Oral Tradition ◽  
Dynamic Range ◽  
Tap Water ◽  
Three Dimensional ◽  
High Dynamic Range ◽  
Surgical Anatomy ◽  
Lessons Learned ◽  
Specimen Preparation ◽  
Technological Advances ◽  
Key Steps

Abstract Objective This study was aimed to provide a key update to the seminal works of Prof. Albert L. Rhoton Jr., MD, with particular attention to previously unpublished insights from the oral tradition of his fellows, recent technological advances including endoscopy, and high-dynamic range (HDR) photodocumentation, and, local improvements in technique, we have developed to optimize efficient neuroanatomic study. Methods Two formaldehyde-fixed cadaveric heads were injected with colored latex to demonstrate step-by-step specimen preparation for microscopic or endoscopic dissection. One formaldehyde-fixed brain was utilized to demonstrate optimal three-dimensional (3D) photodocumentation techniques. Results Key steps of specimen preparation include vessel cannulation and securing, serial tap water flushing, specimen drainage, vessel injection with optimized and color-augmented latex material, and storage in 70% ethanol. Optimizations for photodocumentation included the incorporation of dry black drop cloth and covering materials, an imaging-oriented approach to specimen positioning and illumination, and single-camera stereoscopic capture techniques, emphasizing the three-exposure-times-per-eye approach to generating images for HDR postprocessing. Recommended tools, materials, and technical nuances were emphasized throughout. Relative advantages and limitations of major 3D projection systems were comparatively assessed, with sensitivity to audience size and purpose specific recommendations. Conclusion We describe the first consolidated step-by-step approach to advanced neuroanatomy, including specimen preparation, dissection, and 3D photodocumentation, supplemented by previously unpublished insights from the Rhoton fellowship experience and lessons learned in our laboratories in the past years such that Prof. Rhoton's model can be realized, reproduced, and expanded upon in surgical neuroanatomy laboratories worldwide.

Effect of metoclopramide on gastric myoelectrical activity in patients with gastroparesis

1998 ◽  
Vol 114 ◽  
pp. A792
Author(s):  
Z.Y. Lin ◽  
R.W. McCallum ◽  
B.D. Schirmer ◽  
J.D.Z. Chen
Keyword(s):  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity

Gastric myoelectrical activity after cervical spinal cord injury

1998 ◽  
Vol 114 ◽  
pp. A795
Author(s):  
C.L. Lu ◽  
P. Montgomery ◽  
X.P. Zou ◽  
J.D.Z. Chen
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Cervical Spinal Cord ◽  
Cervical Spinal Cord Injury ◽  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity ◽  
Cord Injury

Gastric myoelectrical activity in patients with type I diabetes mellitus and autonomic neuropathy

1994 ◽  
Vol 39 (11) ◽  
pp. 2376-2383 ◽  
Author(s):  
H. J. A. Jebbink ◽  
P. P. M. Bruijs ◽  
B. Bravenboer ◽  
L. M. A. Akkermans ◽  
G. P. van Berge-Henegouwen ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Autonomic Neuropathy ◽  
Type I Diabetes ◽  
Type I Diabetes Mellitus ◽  
Type I ◽  
Gastric Myoelectrical Activity ◽  
Myoelectrical Activity
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