Thermodynamic Assessment of Acoustic Effects on Psycho-Physiological Parameters

2015 ◽  
Vol 22 (3) ◽  
pp. 20-25
Author(s):  
Буров ◽  
I. Burov ◽  
Поскина ◽  
T. Poskina ◽  
Филатова ◽  
...  
Keyword(s):  
Shannon Entropy ◽  
Classical Music ◽  
Physiological State ◽  
Acoustic Stimulation ◽  
Matrix Analysis ◽  
Stochastic Methods ◽  
System Control ◽  
Neuromuscular System ◽  
Auditory Analyzer ◽  
Left And Right

Using stochastic methods (calculation of the Shannon entropy) and methods of traditional statistics the authors have studied the response of the neuromuscular system to different acoustic effects (white noise, rhythmic music, classical music, hard-rock). In the case of acoustic stimulation on the auditory analyzer, the authors used an approach based on the analysis of the Shannon entropy of the parameters of the neuromuscular system (postural tremor) with simultaneous registration of tremorogramm left and right hands of the subjects (in terms of sound exposure). This influence played a role of perturbing factor for the system control of muscle movements (and muscle activity) through a change in psycho-physiological state of the subject. The developed method of matrix analysis provides identification of systems with chaotic organization, which has been demonstrated in this article by analyzing tremorogramm left and right hands of the subjects under different acoustic effects. The authors propose a new method to assess the functional asymmetry of motor function of a person.

NEUROCOMPUTER use in an assessment of chaotic dynamics of parameters of neuromuscular system of the person at various acoustic influences

10.12737/5515 ◽  
2014 ◽  
Vol 3 (2) ◽  
pp. 13-28
Author(s):  
Нехайчик ◽  
S. Nekhaychik ◽  
Козлова ◽  
V. Kozlova ◽  
Берестин ◽  
...  
Keyword(s):  
Chaotic Dynamics ◽  
Classical Music ◽  
Stochastic Approach ◽  
Neuromuscular System ◽  
Behavioral Dynamics ◽  
Hands On ◽  
Different Types ◽  
Left And Right ◽  
The Common ◽  
Acoustic Impact

The behavior of the human body state vector (for example, the reaction of tremoro-gram parameters) in response to different acoustic impacts (white noise, rhythmic music, classical music, hard rock) was studied by using the methods of neurocomputing. We showed the distinctions in the estimation of the behavioral dynamics of the parameters of the neuromuscular system, such as various motor reaction (tremor) of the left and right hands on the acoustic impact. The common regularities in the dynamics of behavior parameters of tremor at various acoustic impact on Surgut students hands were revealed. The analysis of quasi-attractors of differentiated reactions of left and right hands using neural emulators showed significant distinction on different types of acoustic impacts. Asymmetry of motor responses from the standpoint of the theory of chaos and self-organization was more marked than according to the stochastic approach. Neural emulator demonstrated the significance of all impacts on tremor parameters (system synthesis problem is being solved).

Application of Statistical Methods and Multidimensional Phase Space Methods for Estimation of Chaotic Dynamics of Neuromuscular System Parameters under Acoustic Effects

10.12737/4987 ◽  
2014 ◽  
Vol 21 (2) ◽  
pp. 6-10
Author(s):  
Козлова ◽  
V. Kozlova ◽  
Еськов ◽  
Valeriy Eskov ◽  
Хадарцев ◽  
...  
Keyword(s):  
Statistical Methods ◽  
Classical Music ◽  
Stochastic Approach ◽  
Self Organization ◽  
Neuromuscular System ◽  
Acoustic Effect ◽  
Left Hand ◽  
System Parameters ◽  
Left And Right ◽  
The Right

A behavior of a human body state vector (for example, a reaction of tremorogramm parameters) in response to different acoustic effects (white noise, rhythmic music, classical music, hard rock) was studied using the statistical methods of the theory of chaos and self-organization. The authors showed the distinctions in estimation of behavioral dynamics of the neuromuscular system parameters, such as various motor reaction of the left and right hands to the acoustic effect. The common regularities in the dynamics of the neuromuscular system parameters behavioral parameters at various acoustic effects were revealed in Surgut students analyzing the differential responses of the left and right hands. Increased sizes of quasi-attractors of the right hand (under acoustic effects) and variations of quasi-attractors parameters of a left hand proved it. Simultaneously, tremor indicators for left and right hands differ (in 2-3 times). Asymmetry of motor responses from the standpoint of the theory of chaos and self-organization were more marked than according to the stochastic approach.

scholarly journals FINE STRUCTURE AND REPLICATION OF THE KINETOPLAST OF TRYPANOSOMA LEWISI

1968 ◽  
Vol 39 (2) ◽  
pp. 318-331 ◽  
Author(s):  
Paul R. Burton ◽  
Donald G. Dusanic
Keyword(s):  
Fine Structure ◽  
Physiological State ◽  
Trypanosoma Lewisi ◽  
Left And Right ◽  
Morphological Differences ◽  
Oriented Parallel ◽  
Silver Grains

The kinetoplastic DNA of Trypanosoma lewisi is described as a filamentous body lying within a mitochondrion, with the filaments oriented parallel to the long axis of the cell. The manner of fixation, the replicative state, and perhaps the physiological state of the cell, may result in slight morphological differences among such bodies. The kinetoplastic DNA replicates to form "left" and "right" rather than "upper" and "lower" members, and both the kinetoplast and nucleus incorporate radiothymidine as shown by radioautography. Radioautographic analyses suggest a random incorporation of radiothymidine by kinetoplasts. Silver grains were occasionally observed over centriolar elements. Finally, the observations are discussed with respect to the sequential replication of the aforementioned organelles by T. lewisi.

Effect of Chloroplast Movement on Laser Speckle Method

2021 ◽  
Vol 64 (6) ◽  
pp. 1747-1754
Author(s):  
Yohsuke Inagaki ◽  
Rina Akune ◽  
Ayano Matsuda ◽  
Shinichiro Kuroki ◽  
Kenji Takisawa ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Physiological State ◽  
Plant Cells ◽  
Laser Speckle ◽  
Chloroplast Movement ◽  
Matrix Analysis ◽  
List Type ◽  
Abiotic And Biotic Stresses ◽  
Biotic Stresses ◽  
Before And After

HighlightsThis study investigates the use of laser speckle to evaluate chloroplast movement in plant cells.The analysis value of the laser speckle corresponds to chloroplast movement.The run-length matrix analysis that we propose is more sensitive than existing methods.Abstract. Abiotic and biotic stresses change the cytoplasmic streaming in plant cells. In particular, the state of chloroplast movement changes rapidly in response to environmental changes. Thus, detecting chloroplast movement allows us to comprehend the physiological state of plants. This study investigated the applicability of the laser speckle method for evaluating chloroplast movement. Moreover, we propose a new analysis method for sensitively evaluating chloroplast movement. Leaves of Egeria densa were used, and electrical stimulation was applied as recoverable abiotic stress. Laser speckle measurement and light microscopic observation of the same specimen were performed before and after stimulation. The results showed that the laser speckle method can nondestructively evaluate macroscopic and collective chloroplast movement. The proposed method was more sensitive to chloroplast movement than existing methods. Keywords: Chloroplast, Image processing, Laser speckle, Textual analysis.

Turnability of a Small UGV With Individual Wheel Skid-Steering on Soft Terrain

2018 ◽  
Author(s):  
Siyuan Zhang ◽  
Vladimir V. Vantsevich
Keyword(s):  
Angular Velocity ◽  
System Control ◽  
Unmanned Ground Vehicles ◽  
Electric Motors ◽  
Ground Vehicles ◽  
Continuous Transition ◽  
Left And Right ◽  
Skid Steering ◽  
Indoor And Outdoor ◽  
Pneumatic Tires

Conventional turning mechanisms of wheeled skid-steer vehicles provide different velocities of the wheels at the left and right side while the wheels of each side are rigidly coupled and, thus, rotate with the same angular velocity. This turning principle has been employed for decades and provided high turnability of small unmanned ground vehicles (UGV) in both indoor and outdoor conditions with a high grip between pneumatic tires and surface of motion. However, as an analysis revealed, small UGVs habitually demonstrate non-sufficient turnability on deformable, extremely moisturized and heterogeneous terrains. This paper proposes and develops new skid-steering inputs that are associated with de-coupled wheels, which are individually driven by either mechanical drivelines or electric motors. The skid-steering inputs are introduced as four kinematic discrepancy factors (KDF), which individually and, the same time in coordination with each other characterize kinematic and force variances of the UGV four drive wheels. In the paper, the KDF are explicitly determined as skid-steer variables through tire characteristics and parameters of individual mechanical and electric drivelines. The KDF are suitable for a lower vehicle sub-system control to individually manage the wheel torques. The effectiveness of the skid-steering inputs is illustrated by analyzing vehicle understeer and oversteer maneuvers that are caused by various combinations of terrain conditions. A smooth and continuous transition from one to another KDF combination converts vehicle maneuvers and improves UGV turnability.

scholarly journals Brain oscillation recordings of the audience in a live concert-like setting

2021 ◽  
Author(s):  
Mari Tervaniemi ◽  
Saara Pousi ◽  
Maaria Seppälä ◽  
Makkonen Tommi
Keyword(s):  
Classical Music ◽  
Alpha Power ◽  
Brain Functions ◽  
Live Music ◽  
Eeg Data ◽  
Before And After ◽  
Central Regions ◽  
Left And Right ◽  
Regular Manner ◽  
Music Recordings

AbstractThere are only a few previous EEG studies that were conducted while the audience is listening to live music. However, in laboratory settings using music recordings, EEG frequency bands theta and alpha are connected to music improvisation and creativity. Here, we measured EEG of the audience in a concert-like setting outside the laboratory and compared the theta and alpha power evoked by partly improvised versus regularly performed familiar versus unfamiliar live classical music. To this end, partly improvised and regular versions of pieces by Bach (familiar) and Melartin (unfamiliar) were performed live by a chamber trio. EEG data from left and right frontal and central regions of interest were analysed to define theta and alpha power during each performance. After the performances, the participants rated how improvised and attractive each of the performances were. They also gave their affective ratings before and after each performance. We found that theta power was enhanced during the familiar improvised Bach piece and the unfamiliar improvised Melartin piece when compared with the performance of the same piece performed in a regular manner. Alpha power was not modulated by manner of performance or by familiarity of the piece. Listeners rated partly improvised performances of a familiar Bach and unfamiliar Melartin piece as more improvisatory and innovative than the regular performances. They also indicated more joy and less sadness after listening to the unfamiliar improvised piece of Melartin and less fearful and more enthusiastic after listening to the regular version of Melartin than before listening. Thus, according to our results, it is possible to study listeners’ brain functions with EEG during live music performances outside the laboratory, with theta activity reflecting the presence of improvisation in the performances.

Hue and Disparity Interactions in Advanced Stereoscopic Aircraft Displays

1989 ◽  
Vol 33 (20) ◽  
pp. 1422-1426
Author(s):  
James E. McClain
Keyword(s):  
Perceptual Experience ◽  
Visual Fields ◽  
System Control ◽  
Relative Depth ◽  
Stereoscopic Display ◽  
Depth Effect ◽  
Aircraft Systems ◽  
Close Proximity ◽  
Stereoscopic System ◽  
Left And Right

With the increased complexity of aircraft systems and their environment, 3-D stereoscopic system/control displays will offer great advantage over conventional two-dimensional (2-D) displays by presenting information more consistent with the pilot's 3-D perceptual experience and stereotypes. For such displays the interaction of Chromostereopsis (perceived depth created by hues) and stereopsis (depth effect created by disparity between the left and right visual fields of the observer) is important. The purpose of this research is to evaluate the interaction of chromostereopsis and artificially stimulated stereopsis on a stereoscopic CRT by determining the level of accuracy with which subjects can properly interpret the relative depth differences of adjacent symbols containing one of a combination of six levels of hue and seven stereoscopic disparities. This research demonstrated that hue, disparity, and the interaction of hue and disparity significantly influenced one's perception of depth on a stereoscopic monitor and that caution should be exercised by the stereoscopic 3-D display format designer when choosing hues to represent images located in close proximity on a stereoscopic display.

scholarly journals Multi-Parameter Physiological State Monitoring in Target Detection Under Real-World Settings

2021 ◽  
Vol 15 ◽  
Author(s):  
Yang Chang ◽  
Congying He ◽  
Bo-Yu Tsai ◽  
Li-Wei Ko
Keyword(s):  
Real Time ◽  
Target Detection ◽  
Brain Activity ◽  
Physiological State ◽  
Real Life ◽  
Rest Period ◽  
Physical And Mental Health ◽  
State Monitoring ◽  
Left And Right ◽  
Cognitive Attention

Mental state changes induced by stimuli under experimental settings or by daily events in real life affect task performance and are entwined with physical and mental health. In this study, we developed a physiological state indicator with five parameters that reflect the subject’s real-time physiological states based on online EEG signal processing. These five parameters are attention, fatigue, stress, and the brain activity shifts of the left and right hemispheres. We designed a target detection experiment modified by a cognitive attention network test for validating the effectiveness of the proposed indicator, as such conditions would better approximate a real chaotic environment. Results demonstrated that attention levels while performing the target detection task were significantly higher than during rest periods, but also exhibited a decay over time. In contrast, the fatigue level increased gradually and plateaued by the third rest period. Similar to attention levels, the stress level decreased as the experiment proceeded. These parameters are therefore shown to be highly correlated to different stages of the experiment, suggesting their usage as primary factors in passive brain-computer interfaces (BCI). In addition, the left and right brain activity indexes reveal the EEG neural modulations of the corresponding hemispheres, which set a feasible reference of activation for an active BCI control system, such as one executing motor imagery tasks. The proposed indicator is applicable to potential passive and active BCI applications for monitoring the subject’s physiological state change in real-time, along with providing a means of evaluating the associated signal quality to enhance the BCI performance.

Thermodynamic Method in Analyzing of the Parameters Bioelectrical Muscles at Different Static Loads

2015 ◽  
Vol 22 (4) ◽  
pp. 7-12
Author(s):  
Майстренко ◽  
E. Maystrenko ◽  
Черников ◽  
N. Chernikov ◽  
Горбунов ◽  
...  
Keyword(s):  
Physiological State ◽  
Stochastic Approach ◽  
Stochastic Methods ◽  
Bioelectric Activity ◽  
Static Loads ◽  
Recorded Signal ◽  
Functional States ◽  
Low Efficiency ◽  
Bioelectric Potentials ◽  
Increasing Load

The comparative analysis of the dynamics of changes in the bioelectric activity of muscles in response to changes in static stress in the muscle is presented. As the main result of this study after an data analysis obtained by the methods of the chaos theory and self‐organization to describe complex biological systems, it was established low efficiency of deterministic‐stochastic approach. Shannon entropy calculation is performed in different functional states of the muscles. Analysis of the recorded signal and evaluation of randomness in the recorded signal of electro‐myograms showed that with increasing load the size of quasiattractors of the recorded bioelectric potentials of the muscles increases dramatically, but the results of the analysis based on the calculation of the entropy, i.e. the thermodynamic approach, are statistically insignificant. The results allow to conclude that deterministic‐stochastic methods (in particular, the thermodynamic methods) in the assessment of electro‐myograms have low efficiency, and should be used for calculating the area quasi‐attractors of S in evaluating the physiological state of the human body (its homeostasis).

Advances in Microprobe Analysis Applied to Muscle, Nerve and Gland

1982 ◽  
Vol 40 ◽  
pp. 404-407
Author(s):  
T. E. Hutchinson ◽  
D. E. Johnson ◽  
A. C. Lee ◽  
E. Y. Wang
Keyword(s):  
Biological Tissue ◽  
Microprobe Analysis ◽  
Physiological State ◽  
External Environment ◽  
Physiological Relevance ◽  
Muscle Nerve ◽  
Technique Development

Microprobe analysis of biological tissue is now in the end phase of transition from instrumental and technique development to applications pertinent to questions of physiological relevance. The promise,implicit in early investigative efforts, is being fulfilled to an extent much greater than many had predicted. It would thus seem appropriate to briefly report studies exemplifying this, ∿. In general, the distributions of ions in tissue in a preselected physiological state produced by variations in the external environment is of importance in elucidating the mechanisms of exchange and regulation of these ions.

Sign in / Sign up

Export Citation Format

Share Document