Effects of Smoking on Heart Rate Variability Through Information Based Similarity Index

2020 ◽  
Author(s):  
Lokesh Roy ◽  
Sudipta Das ◽  
Sagnik Bhattacharya ◽  
Anushka Chakraborty ◽  
Anilesh Dey
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Similarity Index

scholarly journals Mapping the mental space of emotional concepts through kinematic measures of decision uncertainty

2021 ◽  
Author(s):  
Laura Barca ◽  
Matteo Candidi ◽  
Gian Luca Lancia ◽  
Valerio Maglianella ◽  
Giovanni Pezzulo
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Positive Emotions ◽  
Mental Representations ◽  
Similarity Index ◽  
Similarity Judgment ◽  
Self Report ◽  
Valence And Arousal ◽  
Kinematic Measures ◽  
Emotional Concepts

Emotional concepts and their mental representations have been extensively studied. Yet, some ecologically relevant aspects, such as how emotional concepts are processed in ambiguous contexts, are incompletely known. We employed a similarity judgment of emotional concepts and manipulated the contextual congruency along the two main affective dimensions of hedonic valence and physiological activation, respectively. Behavioral and kinematics (mouse-tracking) measures were combined to gather a novel ‘similarity index’ between concepts, to derive topographical maps of their mental representations. Self-report (interoceptive sensibility, positive-negative affectivity, depression) and physiological measures (heart rate variability) have been tested to shape the emotional maps. Results indicate that low arousal concepts profit by contextual congruency, with faster responses and reduced uncertainty when contextual ambiguity decreases. The emotional maps exhibit two almost orthogonal axes of valence and arousal, and the similarity measure captures the smooth boundaries between emotions. The emotional map of individuals with low positive affectivity reveals a narrower conceptual distribution, with variations on positive emotions and on emotions with reduced arousal (as individuals with reduced heart rate variability). In sum, our work introduces a novel methodology for delve conceptual representations, bringing the dynamics of decision-making processes and choice uncertainty into the affective domain.

scholarly journals Psychophysiology, task complexity, and team factors determine ERT's shared beliefs [Safety Science, 2015]

2018 ◽  
Author(s):  
Bjørn Sætrevik
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Situation Awareness ◽  
Task Complexity ◽  
Similarity Index ◽  
Team Members ◽  
Shared Beliefs ◽  
Scenario Design ◽  
Response Team ◽  
Subjective Reports

In field settings where the objective truth is not known, the extent to which you have the same understanding of the situation as your team leader may be used as an indicator for a team’s situation awareness. Two experiments showed emergency response team members’ degree of shared beliefs (measured as a ‘similarity index’) to be associated with which team they are in, but not with which position they have in the team. This indicates that factors specific to the teams, e.g. the leader’s behavior, the team’s shared experience, or communication patterns, are important for a team’s situation awareness. In the second experiment, task complexity was manipulated with a scripted scenario design and heart rate variability was measured as an indicator of executive function. Shared beliefs were shown to be associated with the degree of high frequency modulation of heart rate variability. Further, shared beliefs were associated with the designed task complexity for some teams. The experiments showed no association between the measure of shared beliefs and subjective reports of situation awareness.

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