Effect of fabric sound and touch on human subjective sensation

2001 ◽  
Vol 2 (4) ◽  
pp. 196-202 ◽  
Author(s):  
Gilsoo Cho ◽  
John G. Casali ◽  
Eunjou Yi
Keyword(s):  
Fabric Sound ◽  
Subjective Sensation

The subjective sensation induced by various thermal pulse stimulation in healthy volunteers

2017 ◽  
Vol 16 (1) ◽  
pp. 177-178
Author(s):  
Y. Oono ◽  
H. Kubo ◽  
T. Imamura ◽  
K. Matsumoto ◽  
S. Uchida ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Thermal Sensation ◽  
Heat Pulse ◽  
Peltier Element ◽  
Cold Pain ◽  
Thermal Pulse ◽  
Heat Sensation ◽  
Thermal Stimulator ◽  
Subjective Sensation ◽  
Pulse Stimulation

AbstractAimsNovel quantitative thermal stimulator devices (QTSDs) have been developed to deliver thermal pulse stimulation with regulated constant temperatures (0–45°C) with a Peltier element probe (16 cm2). The aim of this study was to investigate subjective sensation induced by the interaction between simultaneously applied painful cold and heat stimuli in various sites.MethodsTwenty healthy subjects (12 men and 8 women, age range: 25–45 years) participated. The intensity of cold pain (CP) and heat pain (HP) stimuli were assessed by visual analogue scale (VAS) and adjusted to elicit approximately 70/100 mm. Alternately pulse stimulations (pulse duration of 40 s; 0.025 Hz) which consisted of CP, HP, or neutral temperature (32°C) were applied. Four conditions were tested and subjective sensations were assessed: (1) one QTSD was applied to non-dominant forearm and cold-heat pulse stimulation was applied.Two QTSDs were applied to (2) non-dominant ipsilateral forearm with 5 cm apart, (3) non-dominant and contralateral forearms, (4) non-dominant forearm and ipsilateral thigh, respectively. In conditions of (2)–(4), CP-neutral pulse stimulation (C-Neutral) and neutral-HP pulse stimulation (Neutral-H) were applied simultaneously with opposite phase, respectively.ResultsCP and HP were 3.9±1.0°C (mean±SD) and 43.6±0.9°C (mean±SD), respectively. The VAS values for CP and HP were 73.4±2.0 mm (mean±SD) and 76.4 ±4.8 mm (mean±SD), respectively. Some subjects could not discriminate cold or heat sensation and some felt cold as heat (paradoxical sensation). The number of subjects with such paradoxical sensation in (1), (2), (3), (4) were 9 (45%), 2 (10%), 0 (0%) and 3 (15%), respectively.ConclusionsIn healthy volunteers, simultaneous alternately cold-heat pulse stimulation on one site triggered paradoxical thermal sensation, which to a much less degree is triggered when C-Neutral and Neutral-H were applied to different dermatomes. This suggests that the mechanism is primarily triggered peripherally.

Correlations between Subjective Sensation of Nasal Patency and Rhinomanometry in both Unilateral and Total Nasal Assessment

ORL ◽  
1995 ◽  
Vol 57 (5) ◽  
pp. 260-263 ◽  
Author(s):  
Jukka Sipilä ◽  
Jouko Suonpää ◽  
Pekka Silvoniemi ◽  
Pekka Laippala
Keyword(s):  
Nasal Patency ◽  
Subjective Sensation

Subjective sensation on sleep, fatigue, and thermal comfort in winter shelter-analogue settings

2017 ◽  
Author(s):  
Kazuki Maeda ◽  
Yosuke Mochizuki ◽  
Kazuyo Tsuzuki ◽  
Yuki Nabeshima
Keyword(s):  
Thermal Comfort ◽  
Subjective Sensation

Evaluation and Modeling of Passenger Vehicle Celeration Performance Based on Artificial Neural Networks

2015 ◽  
Vol 744-746 ◽  
pp. 1938-1942
Author(s):  
Yi He ◽  
Duan Feng Chu
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Comfort Level ◽  
Subjective Rating ◽  
Acceleration Data ◽  
Acceleration And Deceleration ◽  
The Subject ◽  
Artificial Neural ◽  
The Relationship ◽  
Subjective Sensation

As the siginificant factors influence passengers comfort, the vehicle celebration performance may easy to cause accidents, such as hard acceleration and deceleration performance. In order to find the relationship between passengers comfort and celebration performance, 35 passengers and three professional drivers were recruited in the field experiment. The passengers’ comfort feelings were analysed by subject questionnaires, the acceleration and deceleration data were received by CAN bus.The Artificial Neural Networks (ANNs) model was elaborated to estimate and predict the passengers comfort level of driver unsafe acceleration behavior situations. Therefore, the subject views of the passengers could be compared to object acceleration data. An ANN is applied to interconnect output data (subjective rating) with input data (objective parameters). Finally, it is found the investigatioin have demonstrated that the objective values are efficiently correlated with the subjective sensation. Thus, the presented approach can be effectively applied to support the drive train development of bus.

scholarly journals A digitization theory of the Weber–Fechner law

2021 ◽  
Author(s):  
Haengjin Choe
Keyword(s):  
Information Theory ◽  
Neural Coding ◽  
Sensory Perception ◽  
Physical Stimulus ◽  
New Era ◽  
Microscopic Scale ◽  
Amount Of Information ◽  
Subjective Sensation

AbstractSince the publication of Shannon’s article about information theory, there have been many attempts to apply information theory to the field of neuroscience. Meanwhile, the Weber–Fechner law of psychophysics states that the magnitude of a subjective sensation of a person increases in proportion to the logarithm of the intensity of the external physical-stimulus. It is not surprising that we assign the amount of information to the response in the Weber–Fechner law. But no one has succeeded in applying information theory directly to that law: the direct links between information theory and that response in the Weber–Fechner law have not yet been found. The proposed theory unveils a link between information theory and that response, and differs subtly from the field such as neural coding that involves complicated calculations and models. Because our theory targets the Weber–Fechner law which is a macroscopic phenomenon, this theory does not involve complicated calculations. Our theory is expected to mark a new era in the fields of sensory perception research. Our theory must be studied in parallel with the fields of microscopic scale such as neural coding. This article ultimately aim to provide the fundamental concepts and their applications so that a new field of research on stimuli and responses can be created.

scholarly journals Primary school children often underestimate their nasal obstruction

2016 ◽  
Vol 54 (2) ◽  
pp. 164-169
Author(s):  
Francesca Occasi ◽  
Marzia Duse ◽  
Tommaso Vittori ◽  
Anna Rugiano ◽  
Giancarlo Tancredi ◽  
...  
Keyword(s):  
Allergic Rhinitis ◽  
Secondary School ◽  
Primary School ◽  
Nasal Obstruction ◽  
School Children ◽  
Primary School Children ◽  
Nasal Resistance ◽  
Nasal Patency ◽  
School Aged Children ◽  
Subjective Sensation

Background: No consensus has ever been reached about the correlation between nasal resistance and the subjective sensation of nasal patency. The aim of the present study was to better de ne whether primary school and secondary school aged children correctly estimate their nasal obstruction. Materials and methods: Two hundred eighty four children (168 males and 116 female) aged between 6 and 14 years (9.5+2.9 years) affected by Pediatric Allergic Rhinitis underwent Rhinomanometry and they were considered as correctly estimating their nasal obstruction when the grade of nasal patency corresponded to the severity of the NOSE score, overestimating when the grade of nasal patency was <1 when compared to the severity of the score, underestimating when the grade of nasal patency was >1 when compared to the severity of the score. Results: Correlation between NOSE score and nasal patency was statistically significant (r -0.74; p<0.001). Children between 6 and 9 years of age underestimate (43.7%) and children >12 overestimate (34.7%) their symptoms more frequently than children among other age ranges (p<0.001). Conclusion: Although NOSE score approximately allow to quantify nasal obstruction, in children, especially between 6 and 9 years of age, an objective measurement of nasal patency should be performed to better define the therapeutic approach.

Ultrasound in the Diagnosis of Scaphoid Fractures

1987 ◽  
Vol 12 (1) ◽  
pp. 1-3
Author(s):  
N. A. SHENOUDA ◽  
J. P. S. ENGLAND
Keyword(s):  
Prospective Study ◽  
Reliable Method ◽  
Ultrasound Scanning ◽  
Scaphoid Fractures ◽  
One Year ◽  
A Prospective Study ◽  
Subjective Sensation

A prospective study of the possibilty of confirming clinically suspected scaphoid fractures was carried out over one year. Analysis of the results suggest that ultrasound scanning of suspect scaphoid fractures is a reliable method of assessing this condition. It has one weakness in that the diagnosis is based on subjective sensation and this may at times be faulty. Our results, however, suggest that once practice in the technique has been achieved, then mistakes are rarely made.

Subjective Sensation of Color Differences – Determination of Thresholds Depending on Color Tones and Resolution

2015 ◽  
Vol 21 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Christian Brischke ◽  
Tanja Borcharding ◽  
Uta Mengel
Keyword(s):  
Color Space ◽  
Color Difference ◽  
Threshold Values ◽  
Color Tone ◽  
Color Changes ◽  
Art Objects ◽  
Color Differences ◽  
Subjective Sensation ◽  
Total Color Difference

Abstract Colors are frequently defined by three points on the L*a*b* coordinates of the CIELAB color space, and the distance between two colors can be expressed as the total color difference ΔE. In particular with respect to reproducibility of print media color differences are an important parameter, as well as for car finishes and textile dyes. Color changes are also the result of ageing and weathering which is an issue for art objects and in the building and restoration sector. However, the subjective perceptibility of color differences depends on numerous factors and general thresholds are difficult to define. This study aimed therefore on defining tolerance levels for color changes in dependence of color tones and color tone combinations as well as their resolution. In total 30 test persons evaluated samples, which had been painted with acrylic artist colors with defined color differences (ΔE = 0–7). The test subjects realized color differences already at ΔE = 1–4 for the highest resolution. Threshold values have been identified for different tones as well as the effect of interdependencies between tones and the level of color heterogeneity between adjacent areas.

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