A non-invasive method for real-time eye position recording with an infrared TV-camera

1990 ◽  
Vol 8 (3) ◽  
pp. 210-213 ◽  
Author(s):  
Sohichi Nagao
Keyword(s):  
Real Time ◽  
Eye Position ◽  
Non Invasive ◽  
Invasive Method

A New Approach for a Real-Time Non-Invasive Fatigue Assessment System for Automated Driving

2018 ◽  
Vol 62 (1) ◽  
pp. 1669-1673 ◽  
Author(s):  
Anna Feldhütter ◽  
Alexander Feierle ◽  
Luis Kalb ◽  
Klaus Bengler
Keyword(s):  
Real Time ◽  
Driving Simulator ◽  
Tracking System ◽  
Assessment System ◽  
Automated Driving ◽  
New Approach ◽  
Fatigue Assessment ◽  
Non Invasive ◽  
State Dependent ◽  
Invasive Method

Vehicles with conditional automation will be introduced to the market in the next few years. However, the effect of fatigue as one component of the driver state on the take-over performance still needs to be quantified. To examine this question, a valid, real-time capable and preferably non-invasive method for assessing fatigue while driving automatically is required. For this purpose, we developed an objective driver fatigue assessment system based on the data of a commercial remote eye-tracking system. The fatigue assessment system fuses various metrics based on eyelid opening and head movement. In a validation study with 12 participants in a driving simulator, the fatigue assessment system achieved a sensitivity of 90.0 % and a specificity of 99.2 %. This approach makes a fatigue-state-dependent study design possible and can also provide a basis for advancing existing fatigue assessment systems in automated vehicles.

Micro-embolic risks during radiofrequency and cryoballoon-ablation of atrial fibrillation -analysis from real-time carotid artery doppler monitoring-

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
R Tonegawa ◽  
K Miyamoto ◽  
N Ueda ◽  
K Nakajima ◽  
T Kamakura ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Carotid Artery ◽  
Real Time ◽  
Left Atrial ◽  
Dwell Time ◽  
Cryoballoon Ablation ◽  
Rf Ablation ◽  
Non Invasive ◽  
Invasive Method ◽  
Cryo Ablation

Abstract Background Catheter ablation of atrial fibrillation (AF) is associated with risks of silent cerebral events. However, the timing of intraprocedural micro-embolic events or differences between open-irrigated radiofrequency (RF) and cryoballoon (Cryo) ablation are unclear. Newly developed real-time carotid artery Doppler is a simple non-invasive method to detect micro-embolic signals (MESs) during ablation. Objective We investigated the timing of detecting MESs during RF and Cryo ablation of AF. Methods During the first pulmonary vein isolation (PVI) session of AF, MESs were monitored by real-time carotid artery Doppler monitoring throughout the procedure. The MES counts were collected and evaluated separately during the different steps of the procedure (Figure). Results Thirty-three AF patients (RF/Cryo: 22/11 cases, 9 females, 69.5±11.6 y.o) were included. PVI was successfully accomplished in all patients with no major complications. The MES count was significantly greater in the RF group than Cryo group (table). In both groups, left atrial (LA) access (interatrial puncture) and sheaths insertion to the LA generated a significant number of MESs (RF: 1690 of 9116 MESs [18.5% of the total MESs], Cryo: 793 of 2285 MESs [34.7%]). In the RF group, MESs were observed incessantly during PVI (Figure). The LA dwell time was significantly longer in the RF group than Cryo group (table). In the RF group, the MES count was significantly greater in the longer LA dwell time group (LA dwell time >130min) than the shorter group (464.2±179.7 vs 302.6±138.2: P=0.049). During the cryo-applications in the Cryo group, the MESs were greatest during the first cryoballoon application (625 of 2285 MESs [27.4%]). Conclusions There were more MESs during RF ablation than cryoablation. MESs were recorded during a variety of steps throughout the procedure. In the RF group, most of MESs were recorded incessantly during radiofrequency ablation and greater number of MESs were recorded in patients with longer LA dwell time. In the Cryo group, most of MESs occurred during phases with a high probability of gaseous emboli. Funding Acknowledgement Type of funding source: None

Neural Network Enhanced Real-Time Impedance Flow Cytometry for Single-Cell Intrinsic Characterization

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Yongxiang Feng ◽  
Zhen Cheng ◽  
Huichao Chai ◽  
Weihua He ◽  
Liang Huang ◽  
...  
Keyword(s):  
Neural Network ◽  
Flow Cytometry ◽  
Electrical Properties ◽  
Single Cell ◽  
Real Time ◽  
Label Free ◽  
Intrinsic Characterization ◽  
Non Invasive ◽  
Invasive Method ◽  
Sample Heterogeneity

Single-cell impedance flow cytometry (IFC) is emerging as a label-free and non-invasive method for characterizing the electrical properties and revealing the sample heterogeneity. At present, most IFC works utilized phenomenological...

scholarly journals Non – Invasive Haemoglobin Measurement

2020 ◽  
Vol 9 (2) ◽  
pp. 729-733
Keyword(s):  
Real Time ◽  
Human Body ◽  
Continuous Monitoring ◽  
Physiological Condition ◽  
The Other ◽  
Non Invasive ◽  
Haemoglobin Measurement ◽  
Invasive Method ◽  
Invasive Techniques ◽  
Invasive Measurement

Haemoglobin is one of the main constituents in characterizing the physiological condition of a human body. Currently, invasive techniques which are being used, are not suitable for real-time continuous monitoring and also include delay. On the other hand, the non-invasive method of haemoglobin measurement ensures painless and continuous real-time monitoring. This paper discusses the method and technique involved in designing a prototype for the non-invasive measurement of haemoglobin.

Malfunctional Reorganization in the Developing Limbo-Prefrontal System in Animals: Implications for Human Psychoses?

2001 ◽  
Vol 12 (1) ◽  
pp. 8-14
Author(s):  
Gertraud Teuchert-Noodt ◽  
Ralf R. Dawirs
Keyword(s):  
Prefrontal Cortex ◽  
Mental Disorders ◽  
Dentate Gyrus ◽  
Cognitive Functions ◽  
Experimental Approach ◽  
Regulatory Mechanisms ◽  
Hippocampal Dentate Gyrus ◽  
Non Invasive ◽  
Invasive Method ◽  
Activity Dependent

Abstract: Neuroplasticity research in connection with mental disorders has recently bridged the gap between basic neurobiology and applied neuropsychology. A non-invasive method in the gerbil (Meriones unguiculus) - the restricted versus enriched breading and the systemically applied single methamphetamine dose - offers an experimental approach to investigate psychoses. Acts of intervening affirm an activity dependent malfunctional reorganization in the prefrontal cortex and in the hippocampal dentate gyrus and reveal the dopamine position as being critical for the disruption of interactions between the areas concerned. From the extent of plasticity effects the probability and risk of psycho-cognitive development may be derived. Advance may be expected from insights into regulatory mechanisms of neurogenesis in the hippocampal dentate gyrus which is obviously to meet the necessary requirements to promote psycho-cognitive functions/malfunctions via the limbo-prefrontal circuit.

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