scholarly journals Analysis of Relationship between Electroencephalograms and Subjective Measurements for In-Vehicle Information System: A Preliminary Study

2021 ◽  
Vol 18 (22) ◽  
pp. 12173
Author(s):  
Nahyeong Kim ◽  
Mungyeong Choe ◽  
Jaehyun Park ◽  
Jungchul Park ◽  
Hyun K. Kim ◽  
...  
Keyword(s):  
Experimental Design ◽  
Usability Evaluation ◽  
Cognitive State ◽  
Subjective Measures ◽  
Subjective Indicators ◽  
Preliminary Study ◽  
Cluster Location ◽  
Vehicle Information ◽  
The Relationship ◽  
Objective Indicators

In this study, we explored the relationship between objective and subjective measures for usability evaluation in in-vehicle infotainment systems (IVISs). As a case study, four displays were evaluated based on cluster location and display orientation (that is, front–horizontal, front–vertical, right–horizontal, and right–vertical). Thirty-six participants performed tasks to manipulate the functions of the IVISs and data were collected through an electroencephalogram (EEG) sensor and questionnaire items. We analysed a model that estimated EEG-based objective indicators from subjective indicators. As a result, the objective indicators reflected the subjective indicators and were considered to explain the driver’s cognitive state. Although EEG data were collected from only four participants, this study proposed an experimental design that could be applied to the analysis of the relationship between the subject’s evaluation and EEG signals, as a preliminary study. We expect the experimental design and results of this study to be useful in analysing objective and subjective measures of usability evaluation.

scholarly journals Usefulness of Linear Mixed-Effects Models to Assess the Relationship between Objective and Subjective Internal Load in Team Sports

2021 ◽  
Vol 18 (2) ◽  
pp. 392
Author(s):  
Alice Iannaccone ◽  
Daniele Conte ◽  
Cristina Cortis ◽  
Andrea Fusco
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Team Sports ◽  
Rating Of Perceived Exertion ◽  
Subjective Measures ◽  
Internal Load ◽  
Random Slopes ◽  
The Relationship

Internal load can be objectively measured by heart rate-based models, such as Edwards’ summated heart rate zones, or subjectively by session rating of perceived exertion. The relationship between internal loads assessed via heart rate-based models and session rating of perceived exertion is usually studied through simple correlations, although the Linear Mixed Model could represent a more appropriate statistical procedure to deal with intrasubject variability. This study aimed to compare conventional correlations and the Linear Mixed Model to assess the relationships between objective and subjective measures of internal load in team sports. Thirteen male youth beach handball players (15.9 ± 0.3 years) were monitored (14 training sessions; 7 official matches). Correlation coefficients were used to correlate the objective and subjective internal load. The Linear Mixed Model was used to model the relationship between objective and subjective measures of internal load data by considering each player individual response as random effect. Random intercepts were used and then random slopes were added. The likelihood-ratio test was used to compare statistical models. The correlation coefficient for the overall relationship between the objective and subjective internal data was very large (r = 0.74; ρ = 0.78). The Linear Mixed Model using both random slopes and random intercepts better explained (p < 0.001) the relationship between internal load measures. Researchers are encouraged to apply the Linear Mixed Models rather than correlation to analyze internal load relationships in team sports since it allows for the consideration of the individuality of players.

scholarly journals SAT0161 THE ANALGESIC EFFECT OF TOFACITINIB MAY HAVE CLINICAL SIGNIFICANCE IN PATIENTS WITH RHEUMATOID ARTHRITIS. DATA FROM THE MOSCOW UNIFIED REGISTER OF ARTHRITIS (MUAR)

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1021.2-1021
Author(s):  
E. Zhilyaev ◽  
G. Lukina ◽  
E. Koltsova ◽  
E. Shmidt ◽  
K. Lytkina
Keyword(s):  
Rheumatoid Arthritis ◽  
Clinical Significance ◽  
Analgesic Effect ◽  
Activity Index ◽  
Theoretical Data ◽  
Disease Activity Index ◽  
Subjective Indicators ◽  
Ability Index ◽  
Subjective Estimates ◽  
Objective Indicators

Background:Some theoretical data suggest that the JAK-kinase blocker tofacitinib (TOFA) may have a direct analgesic effect.Objectives:to evaluate the clinical significance of the analgesic effect in patients with rheumatoid arthritis (RA) in real clinical practice.Methods:Hypothesis being tested: the analgesic effect of TOFA may be manifested by a decrease in the ratio of subjective to objective indicators of arthritis activity.Data from RA patients receiving biologics (bDMARD) and/or TOFA and included in the MUAR register were analyzed. The tender joints count (TJC), the HAQ-DI functional ability index, and the RAPID3 disease activity index were considered as subjective estimates. The swollen joints count (SJC) and the level of CRP were treated as objective indicators. The estimation of quotients from the division of subjective indicators into objective ones in all combinations is made.Taking into account the observational nature of the study, we searched for confounders for each of these ratios. Comparison of the calculated indices during the treatment with various targeted DMARDs (tDMARDs) was made with an adjustment for the detected confounders.Results:the analysis included 944 treatment episodes in 832 patients, including 93 episodes of TOFA treatment. The average age was 55.3 ± 12.4 years, women - 698 (83.9%), seropositive for RF -672 (80.8%). The analysis of the adjusted values showed that the ratios of the TJC, HAQ-DI and RAPID3 to the SJC during the treatment with TOFA was significantly lower than with tDMARDs on average. There were no significant differences in the ratios of objective indicators to the CRP level (Table).Table.Ratios of objective and subjective indicators during the treatment with tofacitinib and with tDMARDs therapy in generalConclusion:the severity of subjective feelings and functional disorders in RA patients receiving TOFA may be less with the same level of objective signs of arthritis compared with bDMARDs.Disclosure of Interests:Evgeniy Zhilyaev Speakers bureau: Novartis, UCB, Pfizer, Biocad, Abbvie, MSD, Roche, Galina Lukina Speakers bureau: Novartis, Pfizer, UCB, Abbvie, Biocad, MSD, Roche, Ekaterina Koltsova: None declared, Evgeniya Shmidt Speakers bureau: MSD, Novartis, Pfizer, Karine Lytkina Speakers bureau: Novartis, Eli Lilly, Pfizer, UCB, Abbvie, Biocad, MSD, Jonson&Jonson

scholarly journals The relationship between body image and emotional and cognitive impairment after brain damage: A preliminary study

2021 ◽  
Author(s):  
Francesco Corallo ◽  
Dominique Tarda ◽  
Valentina Coppola ◽  
Lilla Bonanno ◽  
Viviana Lo Buono ◽  
...  
Keyword(s):  
Body Image ◽  
Cognitive Impairment ◽  
Brain Damage ◽  
Preliminary Study ◽  
The Relationship

scholarly journals Caring for Things Helps Humans Grow: Effects of Courteous Interaction with Things on Pro-Environmental Behavior

2021 ◽  
Vol 13 (7) ◽  
pp. 3969
Author(s):  
Hiroko Kamide ◽  
Tatsuo Arai
Keyword(s):  
Environmental Behavior ◽  
Well Being ◽  
Environmentally Conscious ◽  
Everyday Objects ◽  
Preliminary Study ◽  
The Relationship ◽  
Active Care ◽  
Familiar Objects

The purpose of this study was to clarify the influence of courteous interaction with familiar objects on pro-environmental behavior and well-being. We explored the process of interaction with everyday objects, such as pens and glasses in a preliminary study (N = 64), and to reveal two aspects that define these interactions, namely active care for objects and awareness of learning from the interaction (N = 687; Study 1). The more people cared for and learned through their interactions with a particular object, the more they perceived a connectedness to it (N = 195; Study 2). Furthermore, caring for and learning with familiar objects promoted various environmentally conscious behaviors and contributed to individual well-being (Study 3; N = 600). In this way, we discussed the relationship between interaction with everyday objects, the aspects of these interactions, and the influence of these interactions on an individual’s perspective toward the wider environment.

A usability evaluation toolkit for In-Vehicle Information Systems (IVISs)

2011 ◽  
Vol 42 (4) ◽  
pp. 563-574 ◽  
Author(s):  
Catherine Harvey ◽  
Neville A. Stanton ◽  
Carl A. Pickering ◽  
Mike McDonald ◽  
Pengjun Zheng
Keyword(s):  
Information Systems ◽  
Usability Evaluation ◽  
Vehicle Information
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