Core Concepts
Emotion concepts are formed by integrating interoceptive and exteroceptive information, and can predict unobserved information from acquired information.
Abstract
The study aimed to model the formation of emotion concepts using a constructionist approach based on the theory of constructed emotion. The researchers constructed a model using multilayered multimodal latent Dirichlet allocation (mMLDA), a probabilistic generative model, and trained the model for each subject using vision, physiology, and word information obtained from multiple people who experienced different visual emotion-evoking stimuli.
The key highlights and insights are:
Emotion concepts are formed by integrating interoceptive (physiological) and exteroceptive (vision, word) information, and can predict unobserved information from acquired information.
The mMLDA model was used to express emotion concept formation based on the constructed emotion theory. The model was trained using multimodal data obtained when emotion-evoking stimuli were presented to people.
The categories formed by the mMLDA model were compared with subjective emotional reports of the participants. The results exceeded chance level, suggesting that emotion concept formation can be explained by the proposed model.
The mMLDA model was also used to predict unobserved information in other modalities from observed information in a specific modality, demonstrating the model's ability to predict unobserved information based on the formed concepts.
The results indicate that emotion concepts are formed by integrating interoceptive and exteroceptive information, and the model can capture the relationships between these concepts.
Stats
The study used the following data:
Physiological signals (electrodermal activity and heartbeat waveform) obtained from 29 subjects using wearable sensors
Visual information (60 emotion-evoking images from the International Affective Picture System)
Word information (verbal descriptions of emotions provided by the subjects)
Subjective emotional reports (Self-Assessment Manikin ratings of valence and arousal) provided by the subjects
Quotes
"Emotion concepts not only assign meaning to sensory information and generate emotional instances, but also aid in predicting unobserved information from the acquired information and prescribing behavior."
"Emotion concepts are stochastically composed of multiple dynamically changing categories."
"Emotion concepts are acquired through experience."